Способ установки волоконного световода в наконечнике

Изобретение относится к волоконно-оптической технике и позволяет предотвратить передачу напряжения на волоконный световод. Концевую часть 2 волоконного световода 1, вобожденную от заиштной оболочки 3, размещают внутри полого наконечника 4между тремя шариками 5 из прозрачного материала. Прикрепляют часть 2 световода 1 к наконечнику,4 посредством адгезива 12, отверждение которого осуществляют светом. Удаляют птифованйем концевую часть наконечника 4 с деформированным шариками 5участком световода 1, В процессе шлифования снимают материал на длине, превьшшющей расстояние от конца наконечника 4 до места контакта шариков 5 со световодом 1 на величину, не превьш1ающую радиуса шарика. Торцовая часть наконечника 4 формируется перпендикулярно оси световода 1. 1 3 .п. ф-лы, 2 ил. СП ...

Poliertechnik für optische Fiberenden

Vorrichtung zur Durchführung eines Poliervorgangs auf einer Faser eines Lichtwellenleiterkabels in einem Kabelende

VERBINDUNGSVERFAHREN ZUR HERSTELLUNG VON OPTISCHEN FASERABSCHLUESSEN

OPTISCHER LICHTLEITERANSCHLUSS UND VERFAHREN ZU SEINER HERSTELLUNG

Making an optical fibre-termination

An optical fibre termination which includes a ferrule 1 consisting of a cylindrical pipe having a through-hole 2 at the centre is made by finishing in advance the end surface of the ferrule to form e.g. a convex spherical surface 3. An optical fibre 4 is inserted into and fixed in the ferrule, projecting from the surface 3. The end surface of the optical fibre 4 is thereafter ground and shaped to the same shape as the surface 3. Adhesive 5 is also shown. ...

Fibre optic connector on circuit board having jacking members on opposite edges

A circuit board 30 has a fibre optic connector 35 mounted along its rear end arranged to mate with a cooperating fibre optic connector on a backplane 20. Two jacking members 42 extend from the rear end to the forward end of the board along opposite edges of the board. Electrical contacts 37, 57 and fluid couplings 38, 58 for coolant are shown. A housing contains several circuit board assemblies 30 each having a fibre-optic connector 35 and two jackscrews 42 extending along opposite edges of each board. The jackscrews engage cooperating connectors (22, Fig 1) mounted in a floating manner on a backplane 20 so that the cooperating connectors can move relative to the backplane and to each other. The housing (1, Fig 1) has parallel channels (3, Fig 1) the edges of the boards and the jackscrews 42 are received; the jackscrews may carry wedge locks to force the boards into contact with the channels. The backplane has projecting lugs 24 along each side that engage in the channels 3. The board connectors ...

Connectors and assemblies

PROCEDURE FOR POLISHING FIBER-OPTIC LINKS

FIBRE-OPTICAL ABSORPTION MEMBER

SELF-SUPPORTING FIBER-OPTIC SWITCH.

CONNECTING LINK FOR A FIBER-OPTIC CONSTRUCTION UNIT.

Manufacture and testing of fiber optic cassette

Abstract A double flexible optical circuit includes: a flexible substrate supporting a plurality of optical fibers; a first connector terminating the optical fibers at a first end of the double 5 flexible optical circuit; and a second connector terminating the optical fibers at a second end of the double flexible optical circuit. Each of the optical fibers is positioned in one of a plurality of separate extensions formed by the flexible substrate as the optical fibers extend from the first connector to the second connector. The first and second connectors are configured to be tested when the first and second connectors are connected through the 10 double flexible optical circuit. The double flexible optical circuit is configured to be divided in half once the testing is complete to form two separate flexible optical circuits.

OPTICAL CONNECTOR FERRULE

Six-port optical package and method of manufacturing

Optical fiber array

MULTIFIBER OPTICAL CONNECTOR PLUG WITH LOW REFLECTION AND LOW INSERTION LOSS

OPTICAL CONNECTOR AND METHOD OF FORMING AN OPTICAL SPLICE

Optical fiber connector

OPTICAL FIBER CONNECTOR UTILIZING NESTED ROD ARRANGEMENT

METHOD OF MOUNTING AN OPTICAL FIBRE IN A FIBRE CONNECTOR

In a method for fixing an optical fibre in an optical fibre connector element the fibre is fixed therein by means of centering elements and a curable material , for example an adhesive. The centering elements and the curable material are positioned between the envelope of an end portion of the optical fibre and a surface portion of the connector element surrounding said envelope. After the fixing of the fibre end portion in the connector element the end portion of the connector element including the centering elements and the fibre end portion are machined, for example ground, up to a plane which is positioned inside the points of contact between the centering elements and the fibre end portion and between the centering elements and the surface portion of the connector element surrounding the fibre end portion.

OPTICAL CONNECTOR FOR AN OPTICAL FIBER AND A METHOD FOR MANUFACTURING THE SAME

An optical connector for an optical fibre has a plug to be mounted to an aligner. The plug comprises a cylindrical rod of relatively great hardness and a core member which has a lower hardness and which allows easy machining. The core member is inserted and fixed in the hole formed in the cylindrical rod. A small hole is then formed in the core member. The optical fibre extends within the hole of the cylindrical rod and the tip end of the optical fibre is fixed into the small hole of the core member.

OPTIC FIBER CONNECTOR, AND ITS MANUFACTURE

... brégé Connecteur pour fibres optiques et procédé pour sa réalisation Connecteur pour fibres optiques comportant deux embouts mâles (1) montés à l'extrémité de chacune des fibres (13) à connecter et un raccord femelle de reconstitution (2) comportant un perçage longitudinal (5) pour supporter et aligner les deux embouts face à face. Le raccord femelle comporte dans sa partie centrale, à l'intérieur de son perçage longitudinal, un corps de butée (9) pour les raccords mâles, présentant un orifice axial traversant (10) et autour de celui-ci une portée de contact en regard de chacun des embouts mâles, chacun des embouts mâles présentant une protubérance tubulaire (11) axiale susceptible de s'engager dans l'orifice dudit corps et un conduit (12) dans lequel la fibre optique peut être introduite avec jeu et scellée de manière que son extrémité coïncide avec l'extrémité de ladite protubérance, chacun des embouts comportant en outre en retrait de ladite protubérance, et entourant la partie arrière ...

METHOD AND APPARATUS FOR POLISHING AN END FACE OF AN OPTICAL FIBER

METHOD AND APPARATUS FOR POLISHING AN END FACE OF AN OPTICAL FIBER The end face of an optical fiber is urged against the highly polished surface of a disk as a laser beam is directed toward the disk to heat the end face above its softening temperature and cause it to conform to the contour and finish of the highly polished surface. A termination ferrule may be simultaneously mounted on the fiber optic cable with a heat bonding agent, using as a heat source either the laser beam or an auxiliary heat source. A hand-held, gun-type unit with a built-in disk and triggered laser can be used to polish and terminate optical fibers in the field.

LOW REFLECTION FIBER-OPTIC CONNECTOR

A low-reflection fiber-optic connector. The fiber-optic connector includes a ferrule that includes a fiber passage and an optical fiber traversing the fiber passage. The optical fiber includes a polished fiber end that is substantially flush with a ferrule end face. The ferrule end face, in an area surrounding the polished fiber end, is modified to reduce an optical reflectivity.

FIBER OPTIC TERMINUS AND MANUFACTURING METHOD THEREFOR

A fiber optic terminus (10) for use in fiber optic cable connections which terminus (10) includes an optical fiber (12) disposed within and supported by a ferrule (24). The end surface (52) of the optical fiber (12) is recessed or undercut relative to face surface (28) of the ferrule (24). In another embodiment of the invention, the face surface (28) of the ferrule (24) defines a surface angle which is less than about 2.0 degrees. The fiber optic terminus (10) is fabricated by stripping a fiber optic cable (8) bonding the stripped-end of the fiber optic cable (8) to the ferrule (24), cleaving the optical fiber (12) in closed proximity to the face surface (28) of the ferrule (28), polishing the cleaved-end of the optical fiber (12) to achieve the terminus end profile (50) and inspecting the polished-end of the optical fiber (12).

OPTICAL CONNECTOR ASSEMBLY

Optical connector assemblies suitable for use in harsh environments such as down hole oil and gas well applications and methods for fabricating the same are provided. In one embodiment, an optical connector assembly suitable for down hole oil field applications comprises a first and second optical waveguide urged by a biasing member against a bracket. Each of the waveguides has at least one base surface formed on the exterior of the waveguide that is disposed against at least one of a plurality of reference surfaces of the bracket. In another embodiment, flats comprise two of the base surfaces on each optical waveguide. In another embodiment, a method of fabricating an optical connector assembly suitable for down hole oil field applications includes the steps of forming a first flat on a first optical waveguide, forming a second flat on the first optical waveguide, forming a first flat on a second optical waveguide, forming a second flat on the second optical waveguide, and biasing the ...

PROCESS FOR MAKING MULTIFERRULES CONTAINING A NUMBER OF PARALLEL ARRANGED CYLINDRICAL CHANNELS AND MULTIFERRULE PRODUCED THEREFROM

Procédé de fabrication de multiferrules en un matériaux vitreux comportant une série de canaux cylindriques à axes parallèles et multiferrule issue de ce procédé. Le procédé est caractérisé en ce qu'il comprend les opérations suivantes: on réalise dans un matériau vitreux une ébauche de section bien définie dans laquelle ont été usinés des alésages cylindriques et d'axes parallèles ayant un diamètre inférieur Di, les dimensions de la section extérieure de l'ébauche et le diamètre Di étant définis avec des précisions relatives au moins égales aux précisions relatives demandées respectivement pour les dimensions de la section extérieure de la multiferrule à réaliser et le diamètre intérieur di des canaux de ladite multiferrule; on dispose cette ébauche verticalement dans une installation du même type qu'une installation de fibrage pour fibres optiques; on exerce une traction sur la pièce en formation à la partie inférieure de l'ébauche, de manière à l'étirer jusqu'à obtention des dimensions ...

TERMINATION OF OPTICAL FIBERS

TERMINATION OF OPTICAL FIBERS Disclosed is a method of terminating plastic optical fibers. The fiber is first cut by a blade, preferably at an elevated temperature. The fiber end is then pressed against a smooth, heated surface to reduce irregularities and improve coupling efficiency.

OPTICAL FIBER TERMINAL AND TERMINATION METHOD

METHOD FOR BUTT-COUPLING OPTICAL FIBRE CONNECTORS COMPRISING A CYLINDRICAL FERRULE

The method for butt-coupling an optical fibre connector comprising a cylindrical ferrule consists of the following steps: a) preparing the head of the optical fibre for insertion into the ferrule; b) applying a thin layer of resin to the fibre, taking care not to soil the cut end of the fibre with said resin; c) inserting said fibre into the sized hole of the cylindrical ferrule; d) by means of an alignment bush, coupling said ferrule to a reference ferrule in which a piece of fibre has been previously housed and fixed such that the end surface of said fibre lies inward of the end surface of the reference ferrule; e) crosslinking the resin.

Fibre optic coupling system

Fibre optic coupling system is constructed so that polished ends of light guides closely abut interfacing lens ...

OPTICAL FIBER END PIECE FOR THE OPTICAL COUPLING OF FIBERS.

CLUTCH PART AT A FIBRE OPTICS AND PROCEDURE FOR ITS PRODUCTION.

Ferrule for a device for connecting the ends of two optical fibres, and connection device comprising such a ferrule

The ferrule (1) intended for receiving and holding the end (9) of an optical fibre comprises a body (2) provided with a passage (6) into which the jacketed portion (7) of the fibre is inserted. A cylindrical end-piece (3), made of sintered alumina, which includes a channel (8) for the fibre (9), is firmly attached to the end (4) of the body (1). The end-piece extends beyond the end (4) of the body by a length sufficient for it to be able to be held in a correspondingly-sized bore of an alignment bushing (13). Two ferrules of this type, connected via an alignment bushing, form a particularly advantageous connection device since the positioning of the ends of the optical fibres opposite each other depend only on the accuracy of the dimensions of the end-pieces and of the bore of the bushing, but not on the relative positions of the end-pieces on the ferrule bodies. ...

PROCEDURE FOR CENTERING A FIBRE OPTICS IN A DRILLING AND DEVICE FOR THE EXECUTION OF THE PROCEDURE.

The invention concerns a process and device for eliminating the play between the outer surface of an optical fibre (1) and the inner surface of the bore (22) in an optical-fibre mounting (2). The process proposed does not attempt to adapt the zone surrounding the optical fibre to the external shape of the fibre, as used to be the case, but adapts the optical fibre to the internal shape of the bore (22). The process steps necessary for this include heating the optical fibre (1), then compressing it longitudinally and pulling the compressed section (11) into the mounting (2), bonding the optical fibre (1) with adhesive (7) in the bore (22) and finally, in a separate operation, abrading/polishing the end (12) of the optical fibre and the end (23) of the mounting (2). The process can be used anywhere where the optical fibre can be adapted to the internal shape of the mounting bore by heating and compressing.

Polishing device for optical waveguide (optical fibre) plug pins

The grinding plate (2) of the polishing device has at its centre a bore which extends at right angles to its large face (2a) and is intended for receiving and fixing the front end of an optical waveguide pin (3) with end face projecting beyond the large face (2a). The grinding plate (2) is supported by its peripheral region (2c) via the ball guide (9, 10) against the peripheral face (1b) of the grinding table (1) which has a central bore (1a) at right angles to the table face (1c). The grinding-medium carrier (5), which is spring loaded in the direction of the end face of the optical waveguide pin (3), is displaceably arranged in said bore (1a). ...

Optical multi-way plug connector

The connector has cooperating plug and socket halves (1,1'), each receiving at least 2 optical fibres and incorporating asymmetrical guide elements (8,8' ; 9,9' ; 10,10') for precise assembly of the connector halves. Pref. the guide elements are provided by screws (9,9' 10,10') and positioning pins (8,8'), the latter cooperating with stepped bores for providing 2 different end positions.

Optical sensor comprises multi-channel ferrule for coupling several optical fibers to a photodiode with low insertion losses, low retro-reflections and negligible cross-talk

Optical sensor comprises a photodiode (1), a cylindrical sleeve (2) and a ferrule (3) having a single base and a through-hole containing several optical fibers (4). The end of the optical fibers is lapped where the angle between the lapping plane and the principal axis of the ferrule is not 90[deg] . A lens is positioned between the photodiode and the optical fibers. An independent claim is included for the method of manufacturing the optical sensor by lapping of the ferrule containing several optical fibers at variable angles between the lapping plane and the principal axis of the ferrule.

Technique for automatically producing optical fiber connector

套管模具和套管

A ferrule injection molding core pin hardly worm. This core pin comprises a column portion having a first diameter at a portion where one end face of a ferrule is formed and having such a first angle of inclination that the diameter increases toward the other end, a circular cone portion having a second diameter larger than the first diameter at a portion where the other end of the ferrule is formed and having such a second angle of inclination larger than the first inclination that the diameter decreases toward the one end face, and a curved face inscribing the column portion and the circular cone portion and having an arcuate section.

Grinding carrier for optical fiber connector

Appts. for and method of maching of optical connector end

CONNECTEUR POUR FIBRES OPTIQUES ET PROCEDE POUR SA REALISATION

CONNECTEUR POUR FIBRES OPTIQUES COMPORTANT DEUX EMBOUTS MALES 1 MONTES A L'EXTREMITE DE CHACUNE DES FIBRES 13 A CONNECTER ET UN RACCORD FEMELLE DE RECONSTITUTION 2 COMPORTANT UN PERCAGE LONGITUDINAL 5 POUR SUPPORTER ET ALIGNER LES DEUX EMBOUTS FACE A FACE. LE RACCORD FEMELLE COMPORTE DANS SA PARTIE CENTRALE, A L'INTERIEUR DE SON PERCAGE LONGITUDINAL, UN CORPS DE BUTEE 9 POUR LES RACCORDS MALES, PRESENTANT UN ORIFICE AXIAL TRAVERSANT 10 ET AUTOUR DE CELUI-CI UNE PORTEE DE CONTACT EN REGARD DE CHACUN DES EMBOUTS MALES, CHACUN DES EMBOUTS MALES PRESENTANT UNE PROTUBERANCE TUBULAIRE 11 AXIALE SUSCEPTIBLE DE S'ENGAGER DANS L'ORIFICE DUDIT CORPS ET UN CONDUIT 12 DANS LEQUEL LA FIBRE OPTIQUE PEUT ETRE INTRODUITE AVEC JEU ET SCELLEE DE MANIERE QUE SON EXTREMITE COINCIDE AVEC L'EXTREMITE DE LADITE PROTUBERANCE, CHACUN DES EMBOUTS COMPORTANT EN OUTRE EN RETRAIT DE LADITE PROTUBERANCE, ET ENTOURANT LA PARTIE ARRIERE DE CELLE-CI, UN EVIDEMENT ANNULAIRE DONT LA PAROI DEFINIT UNE PORTEE DE CONTACT 16 ...

METHOD FOR PURIFICATION OF FERRULES OR [...], AND BLANKS OBTAINED THEREBY.

Optical fibre connector - with three inner and three outer rods, and clamping sleeve

CONNECTEUR POUR CABLE OPTIQUE A UNE OU PLUSIEURS VOIES MONOFIBRES

Connecteur pour câble optique à une ou plusieurs voies monofibres. Le connecteur doit assurer le maintien des fibres pendant les opérations de polissage et leur centrage précis en position d'assemblage. Les deux demi-connecteurs sont pour cela munis chacun d'une bague coulissante traversée par chaque fibre. Ces bagues sont immobilisées en position de polissage. En position d'assemblage l'une d'elle est bloquée en saillie, tandis que l'autre bague est maintenue coulissant élastiquement L'interface entre les extrémités des fibres se trouve alors à l'intérieur de la bague en saillie. Application dans tous ces montages utilisant les fibres optiques.

PROCESS AND APPARATUS FOR LIGHTING IN RETURN OF OPTICAL CONNECTORS

저 반사 광섬유 접속기

... 저반사 광섬유 접속기. 광섬유 접속기는 섬유 통로를 포함하는 페룰 및 섬유 통로를 가로지르는 광섬유를 포함한다. 광섬유는 페룰 단부면과 실질적으로 같은 높이인 폴리싱된 섬유 단부를 포함한다. 폴리싱된 섬유 단부를 둘러싸는 영역에서, 페룰 단부면은 광학 반사율을 감소시키도록 변경된다.

Optical connector for connecting optical fibers to one another

An optical connector comprises a clamp member (31) holding an optical fiber (61), a first housing (11) to which the clamp member (31) is fixed, and a second housing (21) fitted to the first housing (11). The first housing (11) has an aligning portion (llc) for aligning and positioning the optical fiber (61), and a clamp holding portion (11d) holding the clamp member (31). The optical fiber (61) has an end portion (61a) protruding forward from the aligning portion (11c) in a cantilevered state.

Device for polishing end face of optic fiber

Disclosed is a device for polishing an end face of an optic fiber, which retains an optic fiber to be ground, comprising a body defining a retaining slot; a retention rod received in the retaining slot; a support fixed to an upper end of the retention rod; a plurality of clamps mounted to the body, a ferrule coupled to each clamp; a lower end of the retention rod forming a jointing section with an outward-projecting outer diameter which prevents the retention rod from engaging the retention slot except the jointing section; the retention slot being recessed below the body to allow a contact surface between the lower end of the retention rod and the retention slot to be substantially at the same plane as the contact surface between the ground end of the optic fiber and the polishing face thereby providing the ground end faces of a batch to be of the same ground shape and thus enhancing efficiency and quality of polishing operation.

OPTICAL CONNECTOR AND FIBER OPTIC CONNECTING METHOD

A connector includes a housing (12, 12', 12", 222), a channel extending through the housing (12, 12', 12", 222) and at least one collet assembly (14, 14', 156, 156', 267) mounted in the housing (12, 12', 12", 222). The at least one collet assembly (14, 14', 156, 156', 267) includes a collet (78, 78', 78", 184, 268) configured to move from a closed position in which an optical fiber (F, F') is held in the connector to an open position in which the optical fiber (F, F') is removable from the connector. The collet assembly (14, 14', 156, 156', 267) further includes a bias element (42, 42", 194, 290) configured to bias the collet (78, 78', 78", 184, 268) to the closed position. A method includes the steps of applying a pressure to a collet assembly (14, 14', 156, 156', 267) against a biasing force of a bias element (42, 42", 194, 290) to slidably move a collet (78, 78', 78", 184, 268) of the collet assembly (14, 14', 156, 156', 267) from a closed position to an open position, inserting an optical ...

PROCESS FOR FINISH-ABRADING OPTICAL-FIBER-CONNECTOR END-SURFACE

To provide a process for finish-abrading an optical-fiber-connector end-surface without generating abrasion scratch on an abraded surface of optical fiber, nor generating an adherent substance. A process for finish-abrading an optical-fiber-connector end-surface which comprises a step of abrading an optical-fiber-connector end-surface with using an abrasive film (100) composed of abrasive grains (103) fixed on a film-form substrate (101), in the presence of a lubricating liquid, wherein the lubricating liquid is an aqueous solution containing a hydrophilic surfactant.

Compressive wedge cleaving of optical fibers

Lengths of an optical fiber may be broken apart from one another while a cross-sectional region of the optical fiber is in a state of multi-axial compressive stress, and the multi-axial compressive stress extends across the optical fiber. The breaking can include propagating a crack across the optical fiber. The crack can be positioned in sufficiently close proximity to the cross-sectional region so that the multi-axial compressive stress restricts the crack from penetrating the cross-sectional region. At least a portion of the optical fiber may be in tension during the breaking.

Article for cleaving and polishing optical fiber ends

An article for temporarily retaining an optical fiber cable including a stripped terminal portion of at least one optical fiber requiring cleaving followed by polishing of an end face thereof. The article comprises a housing having a recess for a demountable optical fiber holder. A demountable optical fiber holder includes a base-plate having at least a first fiber channel to receive at least one optical fiber. The base plate has a number of pockets. A cover plate for the demountable optical fiber holder includes a spring clamp, at least a first upper channel and a number of posts to mate with the pockets of the base-plate to assemble the holder. The article further includes a guide plate attached to the housing to pivot between a first pivot position and a second pivot position. A rotatable lid attached to the housing rotates between an open position and a closed position. The article temporarily retains the optical fiber cable for cleaving and polishing the end face thereof when the lid ...

Circuit board assembly

A circuit board assembly includes a circuit board with an optical fiber embedded in a flexible layer of the board. The flexible layer is detachable whereby it may be bent out of the board via an opening in an upper layer thereof to allow coupling of the fiber with an input/output device, e.g., another fiber. In an alternative embodiment the flexible layer extends beyond the edges of the board.

Method of making a ferrule having enhanced concentricity

A method of making a two-layered (ceramic-glass) ferrule having a high degree of concentricity employing the steps of: (a) providing a tubular fixture; (b) inserting a ferrule fixture into a portion of the tubular fixture, the ferrule fixture having continuous and non-continuous channels, the concentricity of the continuous channel varying no more than two microns; (c) inserting a ceramic ferrule tubular member into the tubular fixture; (d) inserting a glass ferrule tubular member into the ceramic ferrule tubular member and into the non-continuous channel of the ferrule fixture; (e) inserting an alignment member, having a length greater than the glass ferrule tubular member and a diameter that matches the internal diameter of the glass ferrule tubular member and the continuous channel of said ferrule fixture within one micron, into the continuous channel of the ferrule fixture and into the glass ferrule tubular member; (f) bonding the ceramic ferrule tubular member to the glass ferrule ...

Optical switch and method for making

A method for constructing an optical switch and the switch constructed thereby are described. An optical switch having a pair of chips is assembled with a plurality of optical fibers mounted on the chips such that endfaces of the fibers extend beyond ends of the chips. The optical fibers may be mounted by adhering them to the chips. The endfaces of the fibers and the front surfaces of the chips are then polished to provide coplanar surfaces which are good optical couplers. The chips are then etched with an etchant material which is ineffective at etching the optical fibers. The chips may include a coating which is resistant to the etchant material.

Method of polishing the end face of a ferrule on an optical connector

A method of polishing the end face of a ferrule comprises providing an optical connector having the ferrule and an optical fiber fixed to the ferrule. An abrasive sheet film is provided which comprises a resin film having a layer of alumina type particles disposed on a surface thereof. The end face of the ferrule is polished by pressing it against the abrasive sheet film and sliding the end face of the ferrule relative the abrasive sheet film while supplying an abrasive comprised of colloidal particles of SiO2 on the surface of the abrasive sheet film.

Optical device having a slant connecting end surface

An optical device having at least one slant optical connecting interface is disclosed. The optical device comprises a ferrule assembly, a GRIN rod lens assembly and a means for aligning the interface. The ferrule assembly comprises a pair of optical fibers with the distal ends thereof inserted symmetrically with respect to a reference line in a main body thereof, an aligning reference surface constituted by two surfaces which are provided on the outer periphery of the main body, and an end surface composed of the optical fibers and a main body end surface which have been polished to a slant surface. The GRIN rod lens assembly comprises of a GRIN rod lens, an aligning sleeve supporting the GRIN rod lens, an aligning reference surface which is constituted by two surfaces which are provided on the outer periphery of the aligning sleeve, and an end surface which has been formed by polishing the GRIN rod lens to a slant surface. The means for aligning aligns the reference line of the ferrule ...

Multifiber optical connector and method of making same

Two plugs each comprises a pair of plastic guide plates with inner sides in which are formed duplicate groove patterns each consisting of parallel V-sided spaced grooves running through the plugs and divided into a central set of smaller "fiber" grooves and a pair of larger "pin" grooves on opposite sides of and spaced from the pin grooves. The two plates in each plug are disposed with their respective groove patterns registering with each other across a transverse gap such that the fiber grooves define a set of fiber channels extending through the plug from its rear to an end face on a front nose on the plug, the pin grooves defining a pair of pin channels having front openings rearward of such end face. Optical fibers from a ribbon type cable extend through the fiber grooves to the front of the nose. The two plates are bonded together by adhesive filling the spaces in the fiber channels around the fibers, and filling also the portions of the gap between adjacent fiber channels, but not ...

Methods of detecting, classifying and quantifying defects in optical fiber end faces

Methods are provided to detect, classify and quantify defects such as chips, pits, scratches and cracks in a polished end surface (31) of optical fiber and specifically in an end face of an optical fiber terminated by a ferrule (34). Images of the end face are acquired at each of three focal positions which collectively include all the features of interest. Information from these images is combined into a single image which is processed further. Discrepancies between the images are used to discriminate between cracks and scratches. Morphological processing is used to segment the fiber from its ferrule and a Hough transform is used to estimate the center and radius of the optical fiber, which facilitates the isolation of the fiber. Chips and pits in the fiber end face are detected and quantified by thresholding and morphological processing of the isolated fiber. Edge detection is used to detect edge segments resulting from scratches and cracks. Then the line segments are classified into ...

Method and apparatus for reshaping and polishing an end face of an optical fiber

The end face of an optical fiber is urged against the highly polished surface of a disk as a laser beam is directed toward the disk to heat the end face above its softening temperature and cause it to conform to the contour and finish of the highly polished surface. A termination ferrule may be simultaneously mounted on the fiber optic cable with a heat bonding agent, using as a heat source either the laser beam or an auxiliary heat source. A hand-held, gun-type unit with a built-in disk and triggered laser can be used to polish and terminate optical fibers in the field.

Fiber optic connector

An optical fiber connector of the watch bearing jewel type. To prevent "growing out" of a fiber end to which the connector is terminated, a thin protective window is placed against the bearing jewel and supported by a fiber stub mounted in a second watch bearing jewel. The fiber and the fiber stub are optically coupled via the window.

Polishing member and process for producing the same

A polishing member for use in polishing of an end face of an optical fiber connector ferrule comprises a substrate and a polishing layer, which is overlaid on the substrate and which comprises a binder and fine polishing particles dispersed in the binder. Agglomerated fine silica particles having a mean particle size falling within the range of 0.1 mum to 4 mum are utilized as the fine polishing particles contained in the polishing layer, and a thickness of the substrate falls within the range of 25 mum to 150 mum. The polishing with the polishing member is performed while a polishing liquid, which is constituted of water or a silica slurry, is being supplied onto a surface of the polishing layer. The polishing liquid is free from a base or an acid. The polishing layer has a dry thickness falling within the range of 5 mum to 15 mum.

Optical connectors with inorganic adhesives and methods for making the same

One embodiment of the disclosure relates to an optical connector. The optical connector may include a ferrule, a waveguide, and an inorganic adhesive composition. The ferrule may include a fiber-receiving passage defining an inner surface. The inorganic adhesive composition may be disposed within the ferrule and in contact with the inner surface of the ferrule and the waveguide. The inorganic adhesive composition may include at least about 50% by weight of metal oxide.

MULTI-FIBER FERRULE

Systems and method for automatically assembling a multi-fiber optical ferrule. Holes are drilled or etched in a thin, flat substrate. A vacuum gripper and further alignment components are used to provide sufficient lateral alignment for insertion of the optical fibers. The protrusion of each optical fiber is detected on an output side of the substrate, and an adhesive is applied to attach the fibers to the substrate. 1. An automated process comprising:forming a plurality of holes into a substrate having a top surface and a bottom surface, each of the plurality of holes extending through the top surface and the bottom surface and having a pre-determined position within a predefined tolerance;gripping a first optical fiber with a gripper, the gripper configured to control a position of the fiber in a plane transverse to a length of the fiber within a predefined tolerance;guiding the first optical fiber from the top surface of the substrate through a predetermined hole of the plurality of holes and past the bottom surface of the substrate; andconfirming that a length of the first fiber protrudes from the bottom surface of the substrate;repeating said gripping, said guiding, and said confirming with a second optical fiber; andgluing the first and second optical fibers to the substrate.2. The method of claim 1 , wherein the holes in the substrate are formed by deep reactive ion etching.3. The method of claim 1 , wherein the gluing the first and second optical fibers to the substrate includes using an adhesive selected to have a refractive index that is matched to a refractive index of the optical fibers.4. The method of claim 1 , further comprising:polishing the bottom surface of the substrate.5. The method of claim 1 , wherein the substrate is held in a housing.6. The method of claim 1 , further comprising repeating said gripping claim 1 , said guiding claim 1 , and said confirming with additional optical fibers.7. The method of claim 1 , wherein a size of the holes at ...

MICROFABRICATION METHOD FOR OPTICAL COMPONENTS

A ferrule mold having a reverse-image of a through-hole array for optical fibers is formed. A non-polymeric ferrule material is deposited in the reverse-image mold, followed by removing the mold to create a multi-fiber connector ferrule having at least two fiber through-holes. An optical fiber is inserted in each through-hole until each fiber endface is positioned approximately even with a connection surface of the ferrule. A fiber recess for each of the optical fibers is formed such that each fiber is recessed from the multi-fiber ferrule connection surface by a distance of at least 0.1 micron. The recess may be formed by differential polishing of the non-polymeric ferrule and endfaces of the optical fibers. Alternatively, a layer of spacer material may be deposited over the multi-fiber ferrule connection surface. An antireflection coating is deposited over the ends of the recessed fibers. 1. A high-density , recessed-fiber , multi-fiber optical connector component made by a microfabrication method , comprising:a non-polymeric optical connector ferrule having a front surface, the optical connector ferrule made from a ferrule mold having a reverse-image through-hole array for optical fibers, said through-hole array including at least two through-holes, each through-hole dimensioned and configured for holding and aligning a single optical fiber;an optical fiber with a fiber endface, positioned in each of said fiber through-holes;an antireflection coating deposited over said the optical fiber endfaces;a fiber recess formed for each of the optical fibers by 1) differential polishing of said non-polymeric ferrule front surface and the endface of the optical fibers, or 2) depositing a layer of spacer material over a portion of the non-polymeric ferrule front surface;wherein a contact surface of the optical connector is separated from the antireflection coating on the fiber endfaces by a distance of at least 0.1 micron.2. The high-density claim 1 , recessed-fiber claim 1 ...

Fiber optic connector with field installable outer connector housing

An optical connector includes a first sub-assembly that is factory-installed to a first end of an optical fiber and a second sub-assembly that is field-installed to the first end of the optical fiber. The optical fiber and first sub-assembly can be routed through a structure (e.g., a building) prior to installation of the second sub-assembly. The second sub-assembly interlocks with the first sub-assembly to inhibit relative axial movement therebetween. Example first sub-assemblies include a ferrule, a hub, and a strain-relief sleeve that mount to an optical fiber. Example second sub-assemblies include a mounting block; and an outer connector housing forming a plug portion.

BONDING OPERATION FOR FABRICATING FIBER OPTIC TERMINUS

A method for manufacturing a fiber optic terminus (10). The method includes the steps of: stripping a fiber optic cable (8) to expose the optical fiber (12), bonding the stripped-end of the fiber optic cable L(8) to a ferrule assembly (22), cleaving the fiber (12) in close proximity to a face surface (28) of the ferrule assembly (22), polishing the cleaved-end of the optical fiber (12) and inspecting the polished-end of the fiber (12) to determine whether it conforms to predefined acceptance criteria. The bonding operation is characterized by applying an adhesive (40) in a first region (A) between an aft body (26) of the ferrule assembly (22) and a strengthening member (18) of the fiber optic cable (8), applying a bonding adhesive (42) in a second region (B) between the optical fiber (12) and the ferrule assembly (22), elevating the temperature of the bonding adhesive (40), to solidify the adhesive (40) in the first region (A), and elevating the temperature of the bonding adhesive (42), ...

Method of polishing ferrule for optical connector into convex spherical surface

FIXING METHOD OF OPTICAL FIBER TO OPTICAL CONNECTOR

PURPOSE: To prevent an optical fiber from shifting and reduce connection loss by tapering the connection-side end surface of the optical fiber insertion hole of a ferrule attached to an optical connector into a tapered opening part, fusing the projection part of the inserted optical fiber to a larger diameter, and then fixing the optical fiber in the opening part of the ferrule. CONSTITUTION: The tapered opening part 211 for inserting optical fiber core is formed in the connection end surface of the optical fiber core insertion hole 21 bored in the ferrule 2 made of ceramic, and said opening part 211 is made coincident with the connection side end surface of a connector 1. Then, an optical fiber 3 and an optical fiber core 31 are coated with an adhesive, the optical fiber core 31 is inserted into the optical fiber insertion hole 21 of the ferrule 2 until its tip part projects slightly, and the optical fiber 3 is also inserted into the ferrule insertion hole 11 of the connector 1 and adhered ...

眼球手術の装置と方法

... 眼部の前眼房であり且つ白内障レンズの近傍に挿入するための光学プローブは、光源60とその光源からプローブに光放射を伝える光導波路100とにより構成される。光放射はパルス状に形成され、その繰り返しレート、波長および光エネルギーは、切断領域内の白内障レンズに十分な切断誘導損傷をもたらし、またアコースティック領域に十分なアコースティック誘導損傷をもたらすとともに、そのアコースティック領域が切断領域より十分に大きな寸法となるように選択される。アコースティック領域は、切断領域から放射する振動波を発生させ、その振動波が白内障レンズの硬質核質材内を、その核質材に微細な割れ目が生じるように伝搬させることにより形成される。微細な割れ目を有するレンズ材は、その微細な割れ目が形成される以前と較べ、はるかにレーザー・パルスに反応するので、そのレーザー・パルスの印加に応答して、硬質核質材は容易に微細な粒子に分解される。 ...

СПОСОБ ИЗГОТОВЛЕНИЯ И ТЕСТИРОВАНИЯ ВОЛОКОННО-ОПТИЧЕСКОЙ КАССЕТЫ

Изобретение относится к волоконно-оптическим устройствам. Двойная гибкая оптическая схема содержит: гибкую подложку, удерживающую множество оптических волокон; первый соединитель, оконцовывающий оптические волокна на первом конце двойной гибкой оптической схемы, и второй соединитель, оконцовывающий оптические волокна на втором конце двойной гибкой оптической схемы. Каждое из оптических волокон размещено в одном из множества отдельных выступов, сформированных гибкой подложкой, когда оптические волокна проходят от первого соединителя ко второму. Первый и второй соединители приспособлены для тестирования, когда они соединяются посредством двойной гибкой оптической схемы. Эта двойная оптическая схема способна делиться пополам после завершения тестирования для получения двух отдельных гибких оптических схем. Способ сборки гибкой оптической схемы, содержит следующие этапы: размещение множества наконечников в фиксаторе, размещение гибкой оптической схемы в фиксаторе, так чтобы оптические волокна ...

END CAPPING AN OPTICAL FIBER

Optical fibre plug device - has optical fibre section fixed in bore of tube arranged in centring sleeve

The optical-fibre plug device has a centering sleeve (9) whose inside diameter is rather larger than the outside diameter of the tube (4). Near the end (2) of the optical fibre the centering sleeve has holes which are suitable for gripping and manipulating the tube inside the sleeve. The centering sleeve may have - at its end (15) aligned with the end of the optical fibre (1) - some grooves (16) which extend radially and emerge into the sleeve bore (8). The tube may be made of metal and have a funnel-shaped construction on its end face.

Optical fibre centering method for termination in well tube - guiding projecting, bared fibre end through concentric bore to central collar sealed at one end

The centering procedure is for positioning the end of an optical fibre in a well tube. The end of the bared fibred (1) is pushed through the tube (2). The fibre end projecting from the tube is guided through the concentric bore to terminate in a central collar (5) sealed at one end and extending over the well tube. The sealing compound (8) is inserted through at least one opening (9) in the cover of the collar (5). The latter (5) is removed for future use. It has an inner diameter (6) equal to the outer diameter of the well tube (2). The bore diameter (7) at the termination of the collar (5) is equal to the diameter of the fibre core.

HALTERUNGSELEMENT, INSBESONDERE FUEHRUNGSKOERPER FUER EINEN LICHTWELLENLEITER

Stecker für vieladrige optische Verbindung mit niedrigem Reflexions- und niedrigem Dämpfungsverlust

FIBEROPTISCHER KOPPLER UND VERFAHREN ZU DESSEN HERSTELLUNG

FIBEROPTISCHES DÄMPFUNGSGLIED

Polishing light waveguides

OPTICAL CONNECTOR & METHOD OF FORMING OPTICAL SPLICE

Method of polishing an end face of an optical fibre connector

Coupling optical fibres

An optical fiber connector of the watch bearing jewel type. To prevent "growing out" of a fiber end to which the connector is terminated, a thin protective window is placed against the bearing jewel and supported by a fiber stub mounted in a second watch bearing jewel. The fiber and the fiber stub are optically coupled via the window.

PROCEDURE AND DEVICE FOR THE PRODUCTION OF A FIBRE OPTICS END

FINAL CONCLUSION FOR AN OPTICAL FIBRE.

PROCEDURE AND DEVICE FOR CENTERING THE CORE OF AN OPTICAL FIBER IN A LIGHT CONDUCTOR END PIECE.

EQUIPMENT FOR THE EXECUTION OF EYE SURGERY

Optical connection

MULTIFIBER OPTICAL CONNECTOR PLUG WITH LOW REFLECTION AND LOW INSERTION LOSS

CONNECTOR FOR OPTICAL FIBRES

FIBER OPTIC COUPLING DEVICE

METHOD FOR TERMINATING FIBER OPTIC CABLE WITH CONNECTOR

Optical ferrule assemblies and methods of making the same

Optical ferrule assemblies and methods of making the same

Disclosed are multifiber ferrule assemblies and methods for manufacturing the same. In one embodiment, a finished multifiber ferrule can be provided with a front end having a first front surface that extends beyond a second front surface, thereby inhibiting interaction with a laser beam during processing. A plurality of optical fibers can be fixed within respective optical fiber bores and extend from respective optical fiber bore openings to a position beyond the first front surface. The plurality of optical fibers can be processed by cutting and polishing with a laser beam for providing each optical fiber with a final polished end surface located beyond the first front surface. In further embodiments, an offset structure is positioned with respect to a finished multifiber ferrule after cutting and polishing the optical fibers.

Fiber end surface machining device and fiber position structure thereof

A fiber end surface machining device includes a base seat, a pair of electrodes, and a fiber position structure. The fiber position structure includes a resisting unit and a driving member. The resisting unit is movably assembled on the base seat and is located between the pair of electrodes. The driving member is rotatably assembled on the base seat adjacent to the resisting unit. The driving member includes a cam portion resisting the resisting unit. When the cam portion rotates to drive the resisting unit to move towards an optical fiber connector, the resisting unit drives an optical fiber of the optical fiber connector to move relative to an optical fiber ferrule of the optical fiber connector, and a length of the optical fiber protruding out of the optical fiber ferrule is adjusted.

Optical Connector Polishing Jig

In a polishing apparatus, an optical connector polishing jig holds the MT ferrule provided at the connection end portion of the optical connector, the optical connector polishing jig includes: a cylinder base; a cylinder shaft held on the cylinder base to be capable of moving in the up-down direction; and a set block connected to an end of the cylinder shaft and having a hole into which the MT ferrule is inserted and in which fixing means for adjusting the pressing force and fixing the MT ferrule is inserted, and a surface of the fixing means that comes into contact with the MT ferrule has a protrusion that partially protrudes to apply a pressing force to the MT ferrule such that when the MT ferrule is fixed, an end surface of the MT ferrule is slightly deformed and a center portion of the end surface in a longitudinal direction swells. 1. An optical connector polishing jig that holds an MT ferrule of a multi-fiber optical fiber connector in a polishing apparatus for polishing an optical connector , wherein:the optical connector polishing jig comprises fixing means for holding the MT ferrule, anda surface of the fixing means that comes into contact with the MT ferrule has a protrusion that partially protrudes to apply a pressing force to the MT ferrule such that when the MT ferrule is fixed, an end surface of the MT ferrule is slightly deformed and a center portion of the end surface in a longitudinal direction swells.2. The optical connector polishing jig according to claim 1 , wherein:the fixing means includes an opening into which the MT ferrule is inserted, an inner piece fitted in the opening to be adjacent to the MT ferrule, and a screw that presses the inner piece against the MT ferrule for adjusting the pressing force.3. The optical connector polishing jig according to claim 2 , wherein:a protrusion formed on a surface of the inner piece that comes into contact with the MT ferrule has any of a center round shape in which only a portion along the center ...

FIBER OPTIC CONNECTOR FABRICATION CARRIER

A fabrication carrier for fiber optic connectors defines a body configured to removably hold a plurality of fiber optic ferrules. The body allows each of the fiber optic ferrules to be movable along its axis under a bias when the ferrules are mounted to the body. The body can be coupled to a polishing plate for use with a ferrule polishing apparatus in a polishing step. Coupling of the body to the polishing plate allows each of the ferrules to at least partially protrude past a bottom face of the polishing plate for contact with the polishing apparatus. The body of the fabrication carrier is configured as a fixture that can be used in at least one additional fabrication step aside from the polishing step when not mounted to the polishing plate. 1. A fabrication carrier for fiber optic connectors , the carrier comprising:a body configured to removably hold a plurality of fiber optic ferrules, the body allowing each of the fiber optic ferrules to be movable along its axis under a bias when the ferrules are mounted to the body, the body configured as a traveling fixture that can be moved within a manufacturing facility among different stations during fabrication of fiber optic connectors, wherein the body of the fabrication carrier is configured as a fixture that can be used in at least two separate fabrication steps used during manufacturing of a fiber optic connector, wherein the at least two separate steps are selected from the group consisting of cleaving of an optical fiber, epoxy application, insertion of an optical fiber into a fiber optic ferrule, curing of the epoxy, and polishing a fiber optic ferrule including the optical fiber.2. A fabrication carrier according to claim 1 , wherein the body defines a base portion and a cover portion that captures a plurality of latch inserts therebetween claim 1 , each of the latch inserts configured to removably receive at least a portion of a fiber optic connector that includes the fiber optic ferrule with a snap-fit ...

Method of processing a ferrule and apparatus for carrying out the method

A method of processing at least one ferrule is disclosed. The at least one ferrule includes an end face. The method includes engaging the end face of the at least one ferrule and an abrasive element with each other at the mating interface; moving the at least one ferrule and the abrasive element relative to each other; and tracing a spiral path in the abrasive element due to the relative movement between the at least one ferrule and the abrasive element. An apparatus for carrying out the method is also disclosed.

User-Friendly USB Connectors with Fiber-Optical Connections

Performances are enhanced and improved tremendously for existing USB connectors with new improvised fiber-optical connection features and their capabilities. Existing USB connectors, such as user-friendly reversible Type-A and USB Type-C connectors are modified, improvised and retrofitted using means of allocating unused spaces and surfaces to allow fiber-optical wires and connections inside the user-friendly reversible Type-A and USB Type-C connectors. This modification will not affect the regular functions and performances of the user-friendly reversible Type-A and USB Type-C connections. New fiber-optical connections will enhance and improve reversible Type A and USB Type-C as compared to regular user-friendly reversible Type-A and Type-C connectors that have only copper wire connections. They are faster in speed, with the capability of much more bandwidth, longer transmission distance, lighter weight, water proof with corrosion resistance, better data security, immunity to electro-magnetic interference (EMI) and generating no EMI noise, lower cost, less wear and tear for longer life, better safety with non-conductive connectors, and much more. 2. The fiber-optical connection in claim 1 , wherein said matching holes on said mating surfaces must be aligned precisely from said male plug to said female receptacle when they mate to have the best performances of said fiber-optical connections.3. The fiber-optical connection in claim 1 , wherein said reversibility is possible for said USB Type-C and said reversible USB Type-A with or without spare said matching holes to have said fiber-optical connections when said male plug is plugging into said female receptacle in reverse mode.4. The fiber-optical connection in claim 1 , wherein said fiber-optical wires are terminated at each said ends of said male plug and female receptacle claim 1 , and polished to expose at said matching holes on said mating surfaces to make the best of said fiber-optical connections inside said ...

METHODS FOR PROCESSING A MULTI-FIBER FERRULE USING A LASER

A method for processing ferrules for fiber optic connectors is disclosed herein. The method involves ablating a distal end face of the ferrule with the plurality of laser beam pulses to remove a distal layer of the ferrule without removing an optical fiber secured within the ferrule. By removing the distal layer from the ferrule, the optical fiber is caused to protrude distally outwardly from the distal end of the ferrule by a desired amount. A final polish is applied to the distal end face of the ferrule. In some examples, a subsequent laser step is used to remove portions of the distal end face of the ferrule. 1. (canceled)2. A method for processing a multi-fiber ferrule for a multi-fiber fiber optic connector , the multi-fiber ferrule including a ferrule body defining a plurality of openings that extend therethrough , the ferrule body having a plurality of optical fibers potted within the plurality of openings , the method comprising:removing a portion of a distal end face of the multi-fiber ferrule by moving a laser relative to the multi-fiber ferrule, wherein the laser moves in a linear moving direction along a plurality of parallel lines in which a plurality of laser beam pulses are directed at the distal end face of the multi-fiber ferrule;wherein the laser defines a pulse spot on the distal end face of the multi-fiber ferrule each time the laser is pulsed, the pulse spot having a spot coverage area;wherein spot coverage areas of adjacent pulse spots along a given one of the plurality of parallel lines overlap one another by at least 50 percent in the linear moving direction;wherein adjacent ones of the plurality of parallel lines are spaced apart from one another by a distance less than a spot diameter of the adjacent pulse spots such that pulse spots of the adjacent parallel lines have spot coverage areas that overlap, the spot coverage areas of the adjacent parallel lines overlapping by at least 20 percent; andwherein the percent of overlap in the linear ...

Ferrules for fiber optic connectors

A ferrule for a fiber optic connector includes: a main body extending from a first end to a second end, the main body defining a bore extending from the first end to the second end; an end surface at the second end of the main body; and a raised portion on the end surface, the raised portion extending from the second end and surrounding the bore; wherein an optical fiber is configured to be positioned within the bore of the main body; and wherein the end surface is configured to be polished to remove the raised portion.

FERRULE HOLDER FOR OPTICAL FIBER PROCESSING TOOL

A ferrule holder for a tool for processing an end face of an optical fiber held by a ferrule of an optical fiber connector is disclosed. The ferrule holder includes first and second confronting faceplates, with the first face plate operably arranged with the tool. The first and second face plates are configured to magnetically engage while being kinematically aligned. The second face place is configured to receive the optical fiber connector and the ferrule therein so that the end face of the optical fiber resides immediately adjacent an aperture of the first face plate. Light from a light source in the tool is directed through the aperture to process the fiber end. The second face plate can be disengaged from the first face plate and replaced with another second face plate configured to accommodate a ferrule having a different size. 1. A ferrule holder for holding a ferrule of an optical fiber connector , wherein the ferrule holds an optical fiber having an end face to be processed by an optical fiber processing tool that uses light , the ferrule holder comprising:a first face plate having a first magnetic feature, first kinematic alignment features and a conical bore with a wide proximal end and a narrow distal end that defines a narrow aperture;a second face plate having a second magnetic feature complementary to the first magnetic feature, second kinematic alignment features that are complementary to the first kinematic alignment features, and a central bore that closely accommodates the ferrule; andWherein, whenever the first and second face plates are interfaced, the first and second magnetic features magnetically engage and hold the first and second face plates together while the first and second kinematic alignment features operably align and make contact, thereby placing the fiber end face in axial alignment with and in proximity to the narrow aperture.2. The ferrule holder according to claim 1 , wherein the either the first or second magnetic feature ...

POLISHING JIG, FERRULE, AND OPTICAL CONNECTOR

A polishing jig includes a holding member for holding a ferrule when polishing a front end face of the ferrule. The holding member is formed by a holding member body having a through hole through which the ferrule is inserted, and protrusions which are provided on an upper surface of the holding member body, for supporting a flange of the ferrule when the ferrule is inserted into the through hole. 1. A ferrule comprising:a ferrule body which can be inserted into a through hole of a holding member of a polishing jig, and a flange which is provided on said ferrule body and is supported on an upper surface of the holding member when said ferrule body is inserted into the through hole,wherein said flange has cutouts provided in a front surface thereof, which is opposed to the upper surface of the holding member.2. The ferrule as claimed in claim 1 , wherein the cutouts reach a rear surface of said flange.3. A ferrule comprising:a ferrule body which can be inserted into a through hole of a holding member of a polishing jig, anda flange which is provided on said ferrule body and is opposed to an upper surface of the holding member when said ferrule body is inserted into the through hole,wherein a front surface of said flange, which is opposed to the upper surface of the holding member, has protrusions provided thereon which are brought into abutment with the upper surface of the holding member when the ferrule is inserted into the through hole.4. An optical connector that includes the ferrule as claimed in .5. An optical connector that includes the ferrule as claimed in .6. An optical connector that includes the ferrule as claimed in . The present invention relates to a polishing jig, a ferrule, and an optical connector.Conventionally, there has been proposed a polishing device that polishes an end face of a ferrule of an optical connector (see Patent Literature 1 below).This polishing device comprises a rotating polishing board, polishing paper, a ferrule-fixing section, ...

CHIP RESISTANT FERRULE

A multi-fiber ferrule includes a ferrule body made of a first material and has at least one alignment passage in the front face. The alignment passage has first and second sections. An insert is positioned within the first section of the alignment passage and is formed of a second material that is tougher than the first material. The insert has an insert hole coaxial with a central axis of the alignment passage. 1. A multi-fiber ferrule for positioning a plurality of optical fibers , the multi-fiber ferrule comprising:a ferrule body made of a first material, the ferrule body including a front face, an opposed rear face, a pair of spaced-apart alignment passages and a plurality of fiber-receiving bores extending therebetween, each bore receiving an end portion of one optical fiber therein;each alignment passage being configured to receive an alignment member in order to align the multi-fiber ferrule with another component, and including first and second sections, the first section having a first length extending from proximate the front face to a transition spaced from the front face, and a first cross-sectional dimension adjacent the front face, the second section having a second length extending from the transition to a second position located between the transition position and the rear face, a second cross-sectional dimension adjacent the second position, the second cross-sectional dimension being less than the first cross-sectional dimension; andan insert positioned within the first section of the alignment passage, the insert being formed of a second material tougher than the first material and having an insert hole coaxial with a central axis of the alignment passage.2. The multi-fiber ferrule of claim 1 , wherein a cross-sectional dimension of the insert hole is generally equal to the second cross-sectional dimension.3. The multi-fiber ferrule of claim 1 , wherein each alignment passage extends between the front and rear faces of the ferrule body.4. The multi ...

OPTICAL RECEPTACLE, FERRULE, AND PLUG FERRULE

A ferrule containing an optical fiber, the ferrule having an end surface which is polished into a convex spherical configuration on a side to be optically connected to one other member, and a foreign matter movement suppressor is provided with the end surface for suppressing movement of foreign matter moving from an outer circumferential portion of the ferrule toward a central portion of the end surface due to inserting and removing the ferrule. The foreign matter movement suppressor includes a first portion of the end surface which does not directly contacting the one other member, and an average height of a surface of the first portion is 0.305 micrometers or more, and a skewness of the surface of the first portion is −0.2 or less. 1. A ferrule containing an optical fiber conducting light , the ferrule including a foreign matter movement suppressor in an end surface , the end surface being polished into a convex spherical configuration on a side to be connected to one other member , the foreign matter movement suppressor suppressing movement of foreign matter moving , due to inserting and removing the ferrule , from an outer circumferential portion of the ferrule toward a central portion of the end surface , whereinthe foreign matter movement suppressor includes a first portion of the end surface not directly contacting the one other member, andan average height of a surface of the first portion is 0.305 micrometers or more, and a skewness of the surface of the first portion is −0.2 or less.2. The ferrule according to claim 1 , wherein at least a part of the first portion has a tapered configuration extending to an outer circumferential portion of the one other member.3. The ferrule according to claim 1 , wherein a second portion of the end surface protrudes further toward the side to be connected to the one other member than does the first portion claim 1 , the second portion directly contacting the one other member. This application is a continuation of U.S. ...

ABRASIVE JET CLEAVE AND CLEAN SYSTEM

A process for terminating an optical fiber with a ferrule includes the steps of: (a) providing an optical fiber and ferrule with an end of the optical fiber extending beyond a surface of the ferrule; and (b) directing a jet comprising an air-abrasive mixture at the end of the optical fiber to cleave the end of the optical fiber from the remainder of the optical fiber. 140.-. (canceled)41. A method for processing an optical fiber , the method comprising:directing at least one pressurized stream including abrasive material at the optical fiber to process the optical fiber.42. The method of claim 41 , wherein the pressurized stream includes a mixture of pressurized gas and the abrasive material.43. The method of claim 42 , wherein the pressurized gas includes pressurized air.44. The method of claim 41 , wherein the abrasive material has an average particle size less than 8 microns.45. The method of claim 44 , wherein processing the optical fiber includes cleaving the optical fiber.46. The method of claim 45 , wherein the abrasive material includes garnet.47. The method of claim 45 , wherein the optical fiber is supported by a ferrule claim 45 , and wherein the end face of the ferrule has a pre-formed dome shape prior to cleaving.48. The method of claim 47 , wherein after cleaving a post-cleave stub portion of the optical fiber protrudes from an end face of the ferrule claim 47 , and wherein the post-cleave stub portion having a protrusion length in the range of 2-60 microns.49. The method of claim 48 , wherein the post-cleave stub portion is duck-bill shaped or conical.50. The method of claim 48 , wherein the post-cleave stub portion is subsequently processed by polishing the post-cleave stub portion with a final polish grade/grit polishing film.51. The method of claim 50 , wherein no intermediate polishing operations are conducted on the post-cleave stub portion between the cleaving process and the polishing using the final polish grade/grit polishing film.52. The ...

SINGLE-MODE POLYMER WAVEGUIDE CONNECTOR ASSEMBLY DEVICE

Waveguide connector assembly device and methods of forming waveguide connectors include a cap having an inner portion to protect a connection end face of a polymer waveguide, wherein the cap includes one or more insertion structures to position the polymer waveguide in relation to one or more components of an assembled connector, and an inner wall to seal around the assembled connector to prevent contaminants from entering the inner portion. 1. A waveguide connector assembly device comprising: one or more insertion structures to position the polymer waveguide in relation to one or more components of an assembled connector; and', 'an inner wall to seal around the assembled connector to prevent contaminants from entering the inner portion., 'a cap having an inner portion to protect a connection end face of a polymer waveguide, wherein the cap includes2. The waveguide connector assembly device of claim 1 , wherein the one or more insertion structures includes grooves coupled to the cap having a thickness substantially similar to a thickness of the polymer waveguide.3. The waveguide connector assembly device of claim 1 , wherein the one or more insertion structures includes flanges coupled to the cap.4. The waveguide connector assembly device of claim 1 , wherein the one or more insertion structures includes a tapered structure integrally formed with the inner portion of the cap.5. The waveguide connector assembly device of claim 4 , wherein the tapered structure includes a first thickness and a second thickness claim 4 , the first thickness being larger than the second thickness and the second thickness being substantially similar to a thickness of the polymer waveguide.6. The waveguide connector assembly device of claim 1 , further comprising one more guiding pins coupled to the cap corresponding to respective holes in a ferrule claim 1 , wherein the one or more guiding pins align the ferrule to the polymer waveguide.7. The waveguide connector assembly device of claim ...

Methods for processing a multi-fiber ferrule using a laser

A method for processing ferrules for fiber optic connectors is disclosed herein. The method involves ablating a distal end face of the ferrule with the plurality of laser beam pulses to remove a distal layer of the ferrule without removing an optical fiber secured within the ferrule. By removing the distal layer from the ferrule, the optical fiber is caused to protrude distally outwardly from the distal end of the ferrule by a desired amount. A final polish is applied to the distal end face of the ferrule. In some examples, a subsequent laser step is used to remove portions of the distal end face of the ferrule.

MICROFABRICATION METHOD FOR OPTICAL COMPONENTS

A ferrule mold having a reverse-image of a through-hole array for optical fibers is formed. A non-polymeric ferrule material is deposited in the reverse-image mold, followed by removing the mold to create a multi-fiber connector ferrule having at least two fiber through-holes. An optical fiber is inserted in each through-hole until each fiber endface is positioned approximately even with a connection surface of the ferrule. A fiber recess for each of the optical fibers is formed such that each fiber is recessed from the multi-fiber ferrule connection surface by a distance of at least 0.1 micron. The recess may be formed by differential polishing of the non-polymeric ferrule and endfaces of the optical fibers. Alternatively, a layer of spacer material may be deposited over the multi-fiber ferrule connection surface. An antireflection coating is deposited over the ferrule connection surface and ends of the recessed fibers. 1. A polishing method of making a recessed fiber , non-contact optical connector , the recessed fiber optical connector having one or more optical fibers positioned in a ferrule , comprising:inserting one or more optical fibers in separate through-holes in a ferrule, each through-hole being sized to accept and align an optical fiber;affixing the one or more optical fibers in the ferrule to form a fiber-ferrule assembly;polishing the fiber-ferrule assembly at a light output end to render a smooth surface on the ferrule;performing differential polishing of the one or more optical fibers in the fiber-ferrule assembly relative to a ferrule front surface so as to create a recess between a fiber facet at an end of the one or more optical fibers and the ferrule front surface, the differential polishing being selected such that created recess ranges from 0.1 micron to several microns;applying an antireflection coating to a polished surface of the fiber and the front surface of the ferrule, the antireflection coating having an operating wavelength range, the ...

FIBER OPTIC CONNECTOR WITH FIELD INSTALLABLE OUTER CONNECTOR HOUSING AND KEYED FERRULE HUB

An optical connector includes a first sub-assembly that is factory-installed to a first end of an optical fiber and a second sub-assembly that is field-installed to the first end of the optical fiber. The optical fiber and first sub-assembly can be routed through a structure (e.g., a building) prior to installation of the second sub-assembly. The second sub-assembly interlocks with the first sub-assembly to inhibit relative axial movement therebetween. Example first sub-assemblies include a ferrule, a hub, and a strain-relief sleeve that mount to an optical fiber. Example second sub-assemblies include a mounting block; and an outer connector housing forming a plug portion. 120-. (canceled)21. A connector arrangement comprising:a sub-assembly including an optical fiber terminated at an optical ferrule carried by a ferrule hub, the sub-assembly also including a rear housing interface axially fixed on the optical fiber at a location spaced rearwardly from the ferrule hub, the sub-assembly also including a spring disposed between the ferrule hub and the rear housing interface;a rear housing that mounts about the optical fiber at the rear housing interface, the rear housing engaging the rear housing interface to axially retain the rear housing relative to the optical fiber; andan outer connector housing having a front end forming a plug portion and a rear end, the rear end of the outer connector housing being configured to enable loading of the ferrule and the ferrule hub into the outer connector housing through the rear end, the front end of the outer connector housing providing access to the front end face of the ferrule when the ferrule and the ferrule hub have been loaded into the outer connector housing, the outer connecter housing interlocking with the rear housing such that the ferrule hub and spring are retained within the outer connector housing by the rear housing.22. The connector arrangement of claim 21 , wherein the rear housing interface includes a strain ...

Fiber optic connector with field installable outer connector housing and keyed ferrule hub

An optical connector includes a first sub-assembly that is factory-installed to a first end of an optical fiber and a second sub-assembly that is field-installed to the first end of the optical fiber. The optical fiber and first sub-assembly can be routed through a structure (e.g., a building) prior to installation of the second sub-assembly. The second sub-assembly interlocks with the first sub-assembly to inhibit relative axial movement therebetween. Example first sub-assemblies include a ferrule, a hub, and a strain-relief sleeve that mount to an optical fiber. Example second sub-assemblies include a mounting block; and an outer connector housing forming a plug portion.

OPTICAL RECEPTACLE

An optical receptacle, includes a fiber stub having an optical fiber with a core and cladding, a ferrule with a through-hole fixing the optical fiber, a bonding agent fixing the optical fiber in the through hole and a holder holding the fiber stub. The optical fiber is disposed inside the through-hole over an entire region of the optical fiber, and includes a portion in which a core diameter and a fiber outer diameter decrease gradually toward an end surface of the ferrule on a side opposite to a side to be optically connected to a plug ferrule. The bonding agent is filled into a space between the optical fiber and an inner wall of the through-hole. 1a fiber stub including an optical fiber, a ferrule, and an elastic member, the optical fiber including cladding and a core conducting light, the ferrule having a through-hole fixing the optical fiber, the elastic member fixing the optical fiber in the ferrule; anda holder holding the fiber stub.. An optical receptacle, comprising: This application is a continuation of U.S. patent application Ser. No. 14/900,711, filed Dec. 22, 2015, which is the US National Phase of PCT/JP2014/067073, filed 26 Jun. 2014, and which claims priority from two Japanese Patent Applications, i.e., No. 2013-136496, filed on Jun. 28, 2013, and No. 2014-045649, filed Mar. 7, 2014. The entire subject matter of each of these priority applications is incorporated herein by reference.Embodiments of the invention relate generally to an optical transceiver module for optical communication and relate particularly to an optical receptacle favorable for a high-speed communication module.An optical receptacle is used as a component for optically connecting an optical fiber connector to an optical element such as a light receiving element, a light emitting element, etc., in an optical module of an optical communication transceiver (e.g., referring to Patent Citation 1).In recent years, it is necessary to increase the speed of optical communication ...

Fiber Optic Connector with Field Installable Outer Connector Housing

An optical connector includes a first sub-assembly that is factory-installed to a first end of an optical fiber and a second sub-assembly that is field-installed to the first end of the optical fiber. The optical fiber and first sub-assembly can be routed through a structure (e.g., a building) prior to installation of the second sub-assembly. The second sub-assembly interlocks with the first sub-assembly to inhibit relative axial movement therebetween. Example first sub-assemblies include a ferrule, a hub, and a strain-relief sleeve that mount to an optical fiber. Example second sub-assemblies include a mounting block; and an outer connector housing forming a plug portion.

OPTICAL CONNECTOR FERRULE

An optical connector ferrule according to an embodiment includes: holding holes into which optical waveguiding members, each of which has a GRIN lens, an optical fiber, and a fusion part that connects the GRIN lens and the optical fiber, are inserted; a ferrule end face at which the holding holes open and which faces a counterpart connector; and stepped parts with which the fusion parts of the optical waveguiding members inserted into the holding holes are aligned. 1. An optical connector ferrule comprising:holding holes into which optical waveguiding members, each of which has a first optical waveguiding member, a second optical waveguiding member, and a connecting part that connects the first optical waveguiding member and the second optical waveguiding member, are inserted;a ferrule end face at which the holding holes open and which faces a counterpart connector; andfirst mark parts with which the connecting parts of the optical waveguiding members inserted into the holding holes are aligned.2. The optical connector ferrule according to claim 1 , wherein:each of the holding holes includes a small diameter part that extends from the ferrule end face, and a large diameter part that extends from an end opposite to the ferrule end face; andthe first mark parts are stepped parts, each of which is provided between the small diameter part and the large diameter part.3. The optical connector ferrule according to claim 2 , wherein:the first optical waveguiding member is a GRIN lens, the second optical waveguiding member is an optical fiber, and the connecting part is a fusion part that fuses the GRIN lens and the optical fiber;the GRIN lens is inserted into the small diameter part, and is exposed at the ferrule end face;a diameter of the fusion part is larger than a diameter of the GRIN lens;a diameter of the small diameter part is smaller than the diameter of the fusion part, and is larger than the diameter of the GRIN lens; anda diameter of the large diameter part is ...

OPTICAL CONNECTION MEMBER, OPTICAL CONNECTOR, AND OPTICAL FIBER HAVING CONNECTOR

An optical connection member is used for optical connection of a plurality of optical fibers, the optical connection member including: an end surface facing another optical connection member at the time of the optical connection; and a holding portion holding the plurality of optical fibers, wherein the holding portion is provided with a plurality of holding holes which are opened in the end surface, extend from the end surface in a first direction intersecting with the end surface, and hold the plurality of optical fibers, the end surface includes a first area, a second area, and a third area which are sequentially arranged along a second direction intersecting with the first direction, openings of the plurality of holding holes are arranged in a row in the second direction in the first area and the third area. 1: An optical connection member used for optical connection of a plurality of optical fibers , the optical connection member comprising:an end surface facing another optical connection member at the time of the optical connection; anda holding portion holding the plurality of optical fibers,wherein the holding portion is provided with a plurality of holding holes which are opened in the end surface, extend from the end surface in a first direction intersecting with the end surface, and hold the plurality of optical fibers,the end surface includes a first area, a second area, and a third area which are sequentially arranged along a second direction intersecting with the first direction,openings of the plurality of holding holes are arranged in a row in the second direction in the first area and the third area, anda center interval between the openings mutually adjacent through the second area is larger than a center interval between the openings mutually adjacent in the first area and the third area.2: The optical connection member according to claim 1 , wherein the center intervals between the openings mutually adjacent in the first area and the third area ...

Apparatus for processing a ferrule and associated method

An apparatus for processing a ferrule with an abrasive element. The apparatus includes a first mount to which the ferrule is secured, a second mount to which the abrasive element is secured, and a controller operatively coupled to at least the second mount. The second mount includes a spindle o which the abrasive element is coupled, with the spindle having a central axis about which the spindle is configured to rotate. At least one of the first or second mounts is movable within a plane such that when the ferrule and the abrasive element are brought into contact with each other, the apparatus provides three degrees of freedom of movement for processing the ferrule with the abrasive element. A method of using the apparatus to process a ferrule is also disclosed.

SINGLE-MODE POLYMER WAVEGUIDE CONNECTOR ASSEMBLY DEVICE

A method for assembling a waveguide connector includes positioning a polymer waveguide in one or more insertion structures within an inner portion of a cap where the polymer waveguide has alignment features. The method also includes inserting a ferrule into the inner portion of the cap such that an inner wall of the cap seals around the assembled connector and heating the polymer waveguide and the ferrule to a first temperature with the ferrule comprising alignment features and having a different coefficient of thermal expansion from the polymer waveguide. The alignment features of the polymer waveguide align with the alignment features of the ferrule when the polymer waveguide and the ferrule are heated to the first temperature. 1. A method for assembling a waveguide connector , comprising:positioning a polymer waveguide in one or more insertion structures within an inner portion of a cap, wherein the polymer waveguide comprises alignment features;inserting a ferrule into the inner portion of the cap such that an inner wall of the cap seals around the assembled connector; andheating the polymer waveguide and the ferrule to a first temperature, the ferrule comprising alignment features and having a different coefficient of thermal expansion from the polymer waveguide, wherein the alignment features of the polymer waveguide align with the alignment features of the ferrule when the polymer waveguide and the ferrule are heated to the first temperature.2. The method of claim 1 , wherein positioning the polymer waveguide in one or more insertion structures includes inserting the polymer waveguide in grooves coupled to the cap having a thickness substantially similar to a thickness of the polymer waveguide.3. The method of claim 1 , wherein positioning the polymer waveguide in one or more insertion structures includes inserting the polymer waveguide in a tapered structure integrally formed with the inner portion of the cap.4. The method of claim 1 , further comprising ...

ANGLED-POLISHED CONNECTOR TERMINATIONS IN MULTIMODE APPLICATIONS

A traffic access point (TAP) includes a first angle polished multimode multiple-fiber push-on (MPO) termination, a second angle polished multimode MPO termination, and multiple angle polished LC terminations. At the least, the first and second angle polished multimode MPO terminations are each coupled to a key aligned adapter. 1. A traffic access point (TAP) comprising:a first angle polished multimode multiple-fiber push-on (MPO) termination configured to exchange signals with a first system, the first angle polished multimode MPO termination including a plurality of fibers in a key aligned layout; anda second angle polished multimode MPO termination coupled to the first angle polished multimode MPO termination and configured to output to a second system a portion of a signal transmitted by the first system and received through the first angle polished multimode MPO, the second angle polished multimode MPO termination including a plurality of fibers in a key aligned layout.2. The traffic access point of claim 1 , wherein the first angle polished multimode MPO termination includes an angled ferrule and a key claim 1 , the angle of the ferrule opposed to the key.3. The traffic access point of claim 1 , further comprising:a first key aligned adapter coupled to the first angle polished MPO termination; anda second key aligned adapter coupled to the second angle polished MPO termination.4. The traffic access point of claim 1 , further comprising:an Lucent Connector (LC) termination configured to output a remainder of the signal received from the first system to a third system.5. The traffic access point of claim 4 , wherein the LC termination is an angle polished termination.6. The traffic access point of claim 4 , wherein the first system is a storage array claim 4 , the second system is a monitoring system claim 4 , and the third system is a server system.7. The traffic access point of claim 4 , wherein the portion of the signal is approximately 20% or 30% of the ...

FERRULE POLISHING METHOD OF DUPLEX OPTICAL CONNECTOR PLUG

In a duplex optical connector plug A, when one of first and second optical connector assemblies is rotated around its axis in a clockwise direction or a counterclockwise direction, a rotational force of one of first and second gears is transmitted to the other of the gears by an intermediate gear. Thereby, interlockingly with the one of the optical connector assemblies the other of the optical connector assemblies is rotated around its axis in the clockwise direction or the counterclockwise direction which is the same direction as the optical connector assemblies 1. A ferrule polishing method for polishing first and second ferrules of a duplex optical connector plug by angled polishing , the duplex optical connector plug comprising:a first optical connector assembly; anda second optical connector assembly which is in parallel with the first optical connector assembly, wherein a first plug frame for housing a first ferrule which holds a first optical fiber and extends in an axial direction;', 'a first stop ring which is engageably inserted into the first plug frame; and', 'a first spring which is arranged between the first ferrule and the first stop ring for biasing the first ferrule forward in the axial direction,, 'the first optical connector assembly has a second plug frame for housing a second ferrule which holds a second optical fiber and extends in the axial direction;', 'a second stop ring which is engageably inserted into the second plug frame; and', 'a second spring which is arranged between the second ferrule and the second stop ring for biasing the second ferrule forward in the axial direction, the ferrule polishing method comprising the steps of:', 'rotating one of the first and second optical connector assemblies around the axis of the one of the first and second optical connector assemblies by a quarter-rotation from a starting point of a rotation, the other of the first and second optical connector assemblies being rotated around the axis of the other ...

OPTICAL IMAGING PROBE

This document discusses, among other things, a connector for an optical imaging probe that includes one or more optical fibers communicating light along the catheter. The device may use multiple sections for simpler manufacturing and ease of assembly during a medical procedure. Light energy to and from a distal minimally-invasive portion of the probe is coupled by the connector to external diagnostic or analytical instrumentation through an external instrumentation lead. Certain examples provide a self-aligning two-section optical catheter with beveled ends, which is formed by separating an optical cable assembly. Techniques for improving light coupling include using a lens between instrumentation lead and probe portions. Techniques for improving the mechanical alignment of a multi-optical fiber catheter include using a stop or a guide. 1. (canceled)2. A method of making an optical coupler , the method comprising:angularly cutting at least one optical fiber into first and second portions to obtain beveled ends of the first and second portions; andattaching a first portion of the optical fiber to a coupler housing such that the beveled end of the first portion is located at the coupler housing, wherein the coupler housing includes a receptacle opening sized and shaped to receive an elongated member configured for imaging within an object, wherein the elongated member includes the second portion of the at least one optical fiber, such that the beveled end of the second portion is permitted to butt against the beveled end of the first portion in self-alignment to couple light between the first and second portions.3. The method of claim 2 , in which the cutting at least one optical fiber into first and second portions includes cutting from the same optical fiber to obtain the first and second portions claim 2 , such that the first and second portions have mating beveled ends resulting from the cutting.4. The method of claim 2 , further comprising butting the beveled ...

EXPANDED BEAM ARRAY FOR FIBER OPTICS

An expanded beam fiber optic array connector includes a ferrule holding ends of optical fibers in a first ordered array. A plurality of lenses packaged into a unitary structure, formed of an optical grade material, different than a material used to form the ferrule, is attached to the ferrule. The lenses are arranged into a second ordered array matching the first ordered array of the ends of the optical fibers. The lenses of the expanded beam connector associated with transmit channels can be constructed with a prescription geared specifically for transmitting light, whereas the lenses of the expanded beam connector associated with receive channels can be constructed with a prescription geared specifically for receiving light. 1. A fiber optic ferrule comprising:a first part for holding a plurality of optical fibers, said first part having a first end and a second end, wherein said second end is opposite to said first end;a plurality of optical fibers entering at said first end of said first part and extending to said second end of said first part, wherein ends of said plurality of optical fibers are approximately flush or slightly protruding along a surface defining said second end of said first part;a second part having a first face and a second face, wherein said first face of said second part abuts said second end of said first part, and wherein said second face is opposite to said first face; anda plurality of lenses formed in said second part, wherein each lens of said plurality of lenses overlies a flush or protruding end of one of said plurality of optical fibers.2. The fiber optic ferrule of claim 1 , wherein said plurality of lens includes lenses of different prescriptions.3. The fiber optic ferrule of claim 2 , wherein said plurality of lens includes a first set of lenses of a first prescription optimized to receive light from a fiber end and transmit light away from the lens and a second set of lenses of a second prescription optimized to receive light ...

Optical adapter system

An optical adapter system may comprise a mounting plate. The mounting plate may include a set of magnets associated with: mechanically connecting the mounting plate and an optical adapter of the optical adapter system, and facilitating movement of the optical adapter between multiple positions associated with different optical fiber polishes. The optical adapter system may comprise the optical adapter. The optical adapter may include a set of structures associated with the set of magnets. The optical adapter may include an optical tip connector associated with mechanically connecting the optical adapter system and an optical cable.

ANGLE POLISHED FIBER OPTIC CONNECTIONS

An angle polished fiber optic connector adapted for connection with another angle polished connector in two, reversed configurations has a connector body and first and second angle polished ferrules. The first ferrule is supported by the connector body in a first fixed rotational position about the longitudinal axis of the first ferrule, and the second ferrule is supported by the connector body in a second fixed rotational position about the longitudinal axis of the second ferrule. The second fixed rotational position of the second ferrule being offset by 180 degrees from the first fixed rotational position of the first ferrule. A method of making an angled polished fiber optic connector that can be connected with different polarities is also disclosed. 1. An angle polished fiber optic connector adapted for connection with another angle polished connector in two , reversed configurations , the angle polished connector comprising:a connector body;a first ferrule having a longitudinal axis extending lengthwise of the first ferrule, and including a first fiber, the first ferrule having a connection end face that is polished at an angle from perpendicular to the longitudinal axis of the first ferrule, the first ferrule being supported by the connector body in a first fixed rotational position about the longitudinal axis of the first ferrule;a second ferrule having a longitudinal axis extending lengthwise of the second ferrule, and including a second fiber, the second ferrule having a connection end face that is polished at an angle from perpendicular to the longitudinal axis of the second ferrule, the second ferrule being supported by the connector body in a second fixed rotational position about the longitudinal axis of the second ferrule, the second fixed rotational position of the second ferrule being offset by 180 degrees from the first fixed rotational position of the first ferrule.2. The angle polished fiber optic connector as set forth in wherein the angle from ...

Multi-Fiber Connectorization For Optical Fiber Cable Assemblies Containing Rollable Optical Fiber Ribbons

Embodiments of the invention include a connectorized optical fiber cable. The connectorized optical fiber cable includes at least one multi-fiber unit tube and at least one rollable optical fiber ribbon comprising a plurality of optical fibers positioned within the multi-fiber unit tube. The plurality of optical fibers are rollable in such a way that a first portion of the at least one rollable optical fiber ribbon inside of the at least one multi-fiber unit tube is formed in a substantially circular shape and a second portion of the at least one rollable optical fiber ribbon extending from an end of the at least one multi-fiber unit tube is formed in a substantially flat shape. The connectorized optical fiber cable also includes a jacket surrounding the multi-fiber unit tube and a multi-fiber ferrule connected to an end of the second portion of the at least one rollable optical fiber ribbon. 1. A connectorized optical fiber cable , comprising:at least one multi-fiber unit tube, wherein the multi-fiber unit tube is substantially circular and dimensioned to receive a plurality of optical fibers;at least one rollable optical fiber ribbon comprising a plurality of optical fibers positioned within the at least one multi-fiber unit tube,wherein the plurality of optical fibers in the at least one rollable optical fiber ribbon are rollable in such a way that a first portion of the at least one rollable optical fiber ribbon inside of the at least one multi-fiber unit tube is formed in a substantially circular shape and a second portion of the at least one rollable optical fiber ribbon extending from an end of the at least one multi-fiber unit tube is formed in a substantially flat shape;a jacket surrounding the at least one multi-fiber unit tube; anda multi-fiber ferrule connected to an end of the second portion of the at least one rollable optical fiber ribbon.2. The connectorized optical fiber cable as recited in claim 1 , wherein the at least one rollable optical fiber ...

EXPANDED BEAM ARRAY FOR FIBER OPTICS

An expanded beam fiber optic array connector includes a ferrule holding ends of optical fibers in a first ordered array. A plurality of lenses packaged into a unitary structure, formed of an optical grade material, different than a material used to form the ferrule, is attached to the ferrule. The lenses are arranged into a second ordered array matching the first ordered array of the ends of the optical fibers. The lenses of the expanded beam connector associated with transmit channels can be constructed with a prescription geared specifically for transmitting light, whereas the lenses of the expanded beam connector associated with receive channels can be constructed with a prescription geared specifically for receiving light. 1. A fiber optic ferrule comprising:a first part for holding a plurality of optical fibers, said first part having a first end and a second end, wherein said second end is opposite to said first end;a plurality of optical fibers entering at said first end of said first part and extending to said second end of said first part, wherein ends of said plurality of optical fibers are approximately flush or slightly protruding along a surface defining said second end of said first part;a second part having a first face and a second face, wherein said first face of said second part abuts said second end of said first part, and wherein said second face is opposite to said first face; anda plurality of lenses formed in said second part, wherein each lens of said plurality of lenses overlies a flush or protruding end of one of said plurality of optical fibers, wherein said plurality of lenses includes lenses of different prescriptions and wherein said plurality of lenses includes a first set of lenses having a same first prescription optimized to receive light from an optical fiber end and transmit light away from the lens and a second set of lenses having a same second prescription, different from the first prescription, optimized to receive light into ...

ELECTRIC ARC APPARATUS FOR PROCESSING AN OPTICAL FIBER, AND RELATED SYSTEMS AND METHODS

An electric arc apparatus for processing an optical fiber includes one or more first electrodes and one or more second electrodes. The first electrode(s) each have an end portion that terminates at an opening defined by the first electrode(s). The opening is configured to accommodate the optical fiber extending along a longitudinal axis. The second electrode(s) each have an end portion that terminates at a location spaced from the opening defined by the first electrode(s). The first electrode(s) or second electrode(s) are configured to receive a voltage that generates a plasma field between the first electrode(s) and second electrode(s), which are shaped to focus the plasma field so that the plasma field extends across the longitudinal axis and modifies the end of the optical fiber. Methods of processing an optical fiber with an electric arc apparatus are also disclosed. 1. An electric arc apparatus for processing at least one optical fiber , comprising:one or more first electrodes each having an end portion that terminates at an opening defined by the one or more first electrodes, the opening being configured to accommodate the at least one optical fiber extending along a longitudinal axis; andone or more second electrodes each having an end portion that terminates at a location spaced from the opening defined by the one or more first electrodes;wherein the one or more first electrodes or one or more second electrodes are configured to receive a voltage that generates a plasma field between the one or more first electrodes and the one or more second electrodes, and further wherein the one or more first electrodes and the one or more second electrodes are shaped to focus the plasma field so that the plasma field extends across the longitudinal axis and modifies the end of the optical fiber.2. An electric arc apparatus according to claim 1 , wherein the end portion(s) of the one or more first electrodes each at least partially converges before terminating at the ...

MICROFABRICATION METHOD FOR OPTICAL COMPONENTS

A ferrule mold having a reverse-image of a through-hole array for optical fibers is formed. A non-polymeric ferrule material is deposited in the reverse-image mold, followed by removing the mold to create a multi-fiber connector ferrule having at least two fiber through-holes. An optical fiber is inserted in each through-hole until each fiber endface is positioned approximately even with a connection surface of the ferrule. A fiber recess for each of the optical fibers is formed such that each fiber is recessed from the multi-fiber ferrule connection surface by a distance of at least 0.1 micron. The recess may be formed by differential polishing of the non-polymeric ferrule and endfaces of the optical fibers. Alternatively, a layer of spacer material may be deposited over the multi-fiber ferrule connection surface. An antireflection coating is deposited over the ends of the recessed fibers. 1. A high-density , recessed-fiber , multi-fiber optical connector component , comprising:an optical connector ferrule having a front surface and a through-hole array including at least two through-holes, each through-hole dimensioned and configured for holding and aligning a single optical fiber and wherein said through-holes are formed at a through-hole tilt angle with respect to the surface normal of said front surface of said optical connector ferrule;an optical fiber with a fiber endface, positioned in each of said fiber through-holes;an antireflection coating deposited over the optical fiber endfaces;a fiber recess formed for each of the optical fibers by 1) differential polishing of the ferrule front surface and the endfaces of the optical fibers, or 2) depositing a layer of spacer material over a portion of the ferrule front surface;wherein a contact surface of the optical connector is separated from the antireflection coating on the fiber endfaces by a distance of at least 0.1 micron.2. The recessed-fiber claim 1 , multi-fiber optical connector component as recited in ...

Optical receptacle

According to an aspect of the invention, an optical receptacle, comprising: a fiber stub including an optical fiber, a ferrule, and an elastic member, the optical fiber including cladding and a core conducting light, the ferrule having a through-hole fixing the optical fiber, the elastic member fixing the optical fiber in the ferrule; and a holder holding the fiber stub, the optical fiber being disposed inside the through-hole over an entire region of the optical fiber, the optical fiber including a portion, a core diameter and a fiber outer diameter in the portion decreasing gradually toward an end surface of the ferrule on a side opposite to a side to be optically connected to a plug ferrule, the elastic member being filled into a space between the optical fiber and an inner wall of the through-hole. By making the core small at the optical element side end surface of the optical fiber while contributing to shortening the optical module total length, the strength of the deformable portion of the optical fiber can be ensured; the occurrence of breaking and cracks can be prevented; and the decrease of the coupling efficiency can be prevented by suppressing the movement of the optical fiber when using the optical module.

CONNECTION STRUCTURE OF LENSED OPTICAL FIBER

In connecting between lensed optical fibers () in which a rod-shaped GRIN lens () is coaxially fused with a tip of an optical fiber (), end faces of the lensed optical fibers () are spherically polished with a curvature radius R of 2 mm or more to crimp the end faces with each other, whereby a connection loss upon performing PC connection is reduced. 1. A connection structure comprising: an optical fiber; and', 'a rod-shaped GRIN lens coaxially fused with a tip of the optical fiber,, 'lensed optical fibers in which each of which includeswhereinend faces of the lensed optical fibers are spherically polished with a curvature radius of 2 mm or more, andthe respective end faces are crimped with one another .2. The connection structure according to claim 1 , wherein a contact diameter between the end faces deformed by crimping is equal to or greater than a beam diameter on a contact surface. The present invention relates to a connection structure of a lensed optical fiber preferable for performing PC connection between lensed optical fibers in which a rod-shaped GRIN lens is coaxially fused with a tip of an optical fiber.In an optical communication network, such a lensed optical fiber is known as the lensed optical fiber in which a rod-shaped gradient index (GRIN) lens is coaxially fused with a tip of an optical fiber so that, upon connecting between optical fibers for transmitting an optical signal, the optical fibers can be connected with high efficiency and with a low loss (see Patent Document 1).Moreover, as an optical connector for connecting the optical fibers for transmitting the optical signal, a single fiber coupling (SC) type optical connector for a single fiber, a mechanically transferable (MT) type optical connector for a multifiber, and the like are known. The GRIN lens is formed with the same diameter as the optical fiber in the lensed optical fiber, whereby the optical connectors can be applied also for connection between the lensed optical fibers.Patent ...

LOW REFLECTION FIBER-OPTIC CONNECTOR

A low-reflection fiber-optic connector. The fiber-optic connector includes a ferrule that includes a fiber passage and an optical fiber traversing the fiber passage. The optical fiber includes a polished fiber end that is substantially flush with a ferrule end face. The ferrule end face, in an area surrounding the polished fiber end, is modified to reduce an optical reflectivity. 1. A fiber-optic connector comprising:a ferrule comprising a fiber passage; and wherein the polished fiber end is substantially flush with a ferrule end face, and', 'wherein the ferrule end face, in an area surrounding the polished fiber end, is modified to reduce an optical reflectivity., 'an optical fiber traversing the fiber passage, the optical fiber comprising a polished fiber end,'}2. The fiber-optic connector of claim 1 , wherein the modification to reduce the optical reflectivity comprises: wherein the recess spans the area surrounding the polished fiber end; and', 'wherein the recess is occupied by a component with an optical reflectivity less than an optical reflectivity of an unmodified ferrule end face., 'a recess in the ferrule end face,'}3. The fiber-optic connector of claim 2 , wherein the component with the lesser optical reflectivity is an adhesive.4. The fiber-optic connector of claim 3 , wherein the adhesive is supplemented by light absorbing pigment.5. The fiber-optic connector of claim 2 , wherein the component with the lesser optical reflectivity is an insert placed into the recess.6. The fiber-optic connector of claim 1 , wherein the modification to reduce the optical reflectivity comprises:a coating covering the ferrule end face; anda window in the coating, in a region of the polished fiber end.7. The fiber-optic connector of claim 6 ,wherein the coating is a photosensitive dye, andwherein the window in the coating is generated by exposing the photosensitive dye in the region of the polished fiber end to light, injected from a second fiber end of the optical fiber.8. ...

END FACE PROTECTION TAPE FOR FIBER OPTIC CONNECTOR; AND METHODS

Aspects and techniques of the present disclosure relate to a fiber optic connector assembly including a fiber optic connector with a front end and a back end. A ferrule positioned at the front end. The ferrule has a distal end face with a central region and recessed regions on opposite sides of the central region. The assembly includes a dust cap mounted on the ferrule. The dust cap has an open end and an opposite closed end. The fiber optic connector assembly also includes a tape member that covers the central region of the ferrule. The tape member can be secured to the dust cap such that when the dust cap is removed, the tape member simultaneously comes off with the dust cap. 1. An apparatus for applying protective sheeting on an end face of a ferrule connector , the apparatus comprising:an inspection device including a housing, the housing limiting access of loose particles of dust and debris therein; andan integrated tape application station including a mechanism for dispensing tape within the housing of the inspection device, the integrated tape application station applying a tape member to the end face of the ferrule connector while within the housing.2. The apparatus of claim 1 , further comprising a feed roller to supply the tape member on a liner.3. The apparatus of claim 2 , further comprising a rewind roller that receives the liner from the feed roller after the tape member is removed.4. The apparatus of claim 1 , wherein the end face of the ferrule opposes the inspection device to be inspected within the housing prior to application of the tape member.5. The apparatus of claim 1 , further comprising a roller that presses the tape member against the end face of the ferrule while the liner advances through the apparatus to be wrapped on the rewind roller.6. The apparatus of claim 1 , wherein the inspection device is a microscope.7. The apparatus of claim 1 , further comprising a blower for circulating air through the housing for removing contaminants from ...

METHODS FOR PROCESSING FERRULES AND/OR OPTICAL FIBERS

The present disclosure relates generally to methods for processing ferrules of fiber optic connectors such that the amount of polishing that is required is eliminated or at least reduced. In one example, an energy source is used to remove excess adhesive from the end face of the fiber and likely from an end face of the ferrule. 140-. (canceled)41. A method for processing a ferrule assembly including a ferrule supporting an optical fiber , the method comprising:(a) mechanically polishing a distal end of the optical fiber and a distal end face of the ferrule; and(b) processing the distal end of the optical fiber to round and shape the distal end face of the optical fiber using a non-contact energy source after the mechanical polishing.42. The method of claim 41 , wherein:(a) the step of processing the distal end face of the optical fiber includes a laser ablation process.43. The method of claim 41 , wherein:(a) the non-contact energy source is used to remove imperfections from the distal end of the optical fiber.44. The method of claim 41 , wherein:(a) the non-contact energy source is used to clean the distal end of the optical fiber.45. A method for processing a multi-fiber ferrule supporting a plurality of optical fibers claim 41 , the optical fibers having a distal protrusion length relative to a distal end face of the multi-fiber ferrule claim 41 , the method comprising:(a) establishing the fiber protrusion length by laser ablating the distal end face of the multi-fiber ferrule without ablating the optical fibers; and(b) processing distal ends of the optical fibers with a plasma discharge to round and shape the distal ends of the optical fibers after the fiber protrusion length has been established.46. The method of claim 45 , wherein:(a) the optical fibers include GRIN fibers fused to ends of the optical fibers secured within the ferrule.47. The method of claim 45 , wherein:(a) the plasma discharge is used to remove imperfections from the distal ends of the ...

OPTICAL RECEPTACLE

An optical receptacle includes a fiber stub including an optical fiber, a ferrule having a through-hole fixing the optical fiber, an isolator filled into the through-hole of the ferrule with the optical fiber, and a holder holding the fiber stub. The through-hole has a small and large diameter portions, the optical fiber is disposed in the small diameter portion over the entire region of the optical fiber, the large diameter portion is provided opposite to a side to be optically connected to a plug ferrule, the isolator has substantially the same refractive index as the fiber's core, is filled into the small and large diameter portions, and is polished to cause at least a portion of the isolator to be flat at an end surface portion of the fiber stub on the side with the large diameter portion. 1a fiber stub including an optical fiber, a ferrule, and an elastic member, the optical fiber including cladding and a core for conducting light, the ferrule having a through-hole fixing the optical fiber, the elastic member being filled into the through-hole of the ferrule with the optical fiber; anda holder holding the fiber stub,wherein the through-hole of the ferrule includes a small diameter portion having the optical fiber disposed therein, and a large diameter portion having a slit which has a constant width and which passes through a central axis of the ferrule.. An optical receptacle, comprising: This application is a continuation application of U.S. patent application Ser. No. 15/402,573, filed on Jan. 10, 2017, which is a continuation application of U.S. patent application Ser. No. 14/900,451, filed on Dec. 21, 2015, which is the US National Phase of International Application PCT/JP2014/067264, filed 27 Jun. 2014, which is based upon and claims the benefit of priority from Japanese Patent Application Nos. 2013-136499, filed on Jun. 28, 2013, and 2014-045651, filed on Mar. 7, 2014. The entire contents of these prior applications are incorporated herein by reference. ...

OPTICAL RECEPTACLE

According to an aspect of the invention, an optical receptacle, comprising: a fiber stub including an optical fiber, a ferrule, and an elastic member, the optical fiber including cladding and a core for conducting light, the ferrule having a through-hole fixing the optical fiber, the elastic member being filled into the through-hole of the ferrule with the optical fiber; and a holder holding the fiber stub, the through-hole of the ferrule including a small diameter portion and a large diameter portion, the optical fiber being disposed in the small diameter portion, the large diameter portion being provided on a side opposite to a side to be optically connected to a plug ferrule, the optical fiber being disposed in the small diameter portion inside the through-hole of the ferrule over the entire region of the optical fiber, the elastic member having substantially the same refractive index as the core, being filled into the small diameter portion and the large diameter portion, and being polished to cause at least a portion of the elastic member to be a flat surface portion at an end surface of the fiber stub on the side opposite to the side to be optically connected to the plug ferrule. By disposing the optical fiber in the small diameter portion of the through-hole of the ferrule over the entire region of the optical fiber, the breaking and/or cracking of the optical fiber and the decrease of the coupling efficiency can be prevented. Further, by setting the end surface of the elastic member filled into the through-hole of the ferrule to be a flat surface, the decrease of the coupling efficiency due to reflections is prevented without performing processing of the optical fiber end surface; and economic production is made possible. 1. An optical receptacle , comprising:a fiber stub including an optical fiber, a ferrule, and an elastic member, the optical fiber including cladding and a core for conducting light, the ferrule having a through-hole fixing the optical ...

OPTICAL RECEPTACLE

According to an aspect of the invention, an optical receptacle, comprising: a fiber stub including an optical fiber, a ferrule, and an elastic member, the optical fiber including cladding and a core for conducting light, the ferrule having a through-hole fixing the optical fiber, the elastic member being filled into the through-hole of the ferrule with the optical fiber; and a holder holding the fiber stub, the through-hole of the ferrule including a small diameter portion and a large diameter portion, the optical fiber being disposed in the small diameter portion, the large diameter portion being provided on a side opposite to a side to be optically connected to a plug ferrule, the optical fiber being disposed in the small diameter portion inside the through-hole of the ferrule over the entire region of the optical fiber, the elastic member having substantially the same refractive index as the core, being filled into the small diameter portion and the large diameter portion, and being polished to cause at least a portion of the elastic member to be a flat surface portion at an end surface of the fiber stub on the side opposite to the side to be optically connected to the plug ferrule. By disposing the optical fiber in the small diameter portion of the through-hole of the ferrule over the entire region of the optical fiber, the breaking and/or cracking of the optical fiber and the decrease of the coupling efficiency can be prevented. Further, by setting the end surface of the elastic member filled into the through-hole of the ferrule to be a flat surface, the decrease of the coupling efficiency due to reflections is prevented without performing processing of the optical fiber end surface; and economic production is made possible. 1. An optical receptacle , comprising:a fiber stub including an optical fiber, a ferrule, and an elastic member, the optical fiber including cladding and a core for conducting light, the ferrule having a through-hole fixing the optical ...

LIGHTING AND PROCESSING FOR MICROSCOPIC MEASUREMENT OF A POLISH RADIUS AND AN APEX OFFSET OF A FIBER OPTIC CONNECTOR

A microscope may receive a fiber optic connector via a connector adapter that includes an opening and may align a ferrule of the fiber optic connector with the opening of the connector adapter, where the ferrule includes a ferrule endface. The microscope may transmit light onto the ferrule endface and may receive reflected light, as an image of the ferrule endface, with a camera of the microscope. The microscope may determine intensities of brightness of the image and may create a topographical map of the intensities of the brightness of the image. The microscope may determine a radius and an apex of the ferrule endface based on the topographical map and may calculate an apex offset of the ferrule endface based on the radius and the apex of the ferrule endface. The microscope may perform one or more actions based on the apex offset of the ferrule endface. 1. A method , comprising: 'wherein the connector adapter includes an opening;', 'receiving, by a microscope, a fiber optic connector via a connector adapter of the microscope,'} 'wherein the ferrule includes a ferrule endface;', 'aligning, by the microscope, a ferrule of the fiber optic connector with the opening of the connector adapter of the microscope,'}transmitting, by the microscope, light onto the ferrule endface;receiving, by the microscope, reflected light, as an image of the ferrule endface, with a camera of the microscope;determining, by the microscope, intensities of brightness of the image;creating, by the microscope, a topographical map of the intensities of the brightness of the image;determining, by the microscope, a radius and an apex of the ferrule endface based on the topographical map;calculating, by the microscope, an apex offset of the ferrule endface based on the radius and the apex of the ferrule endface; andperforming, by the microscope, one or more actions based on the apex offset of the ferrule endface.2. The method of claim 1 , wherein the light includes Köhler illumination.3. The method ...

MECHANICAL TRANSFER FERRULE ASSEMBLY AND METHOD OF ASSEMBLY

A mechanical transfer ferrule is formed from a top housing and a bottom housing secured together with a plural of clips, catches and snap from a distal end of the housing portions to a proximal end of the housing portions. A plural of upper grooves formed in the upper housing and a plural of lower grooves formed in the lower housing accept a plural of optical fiber provided by a ribbon cable at a distal end of the mechanical transfer ferrule. At a proximal end of the upper housing is a pressure surface received in a pressure surface cut-out in the lower housing, where the pressure surface secures and orients the optical fiber within the channels formed by the upper and lower grooves to aid in repeated mating with a corresponding mechanical transfer ferrule and polishing the end face of the plural of optical fibers. 1. A mechanical transfer ferrule , comprising:a ferrule body formed from a top housing and a lower housing;the top housing has a plural of upper grooves and a pressure surface formed at a proximal end of the top housing;the lower housing a plural of lower grooves and a pressure surface cut-out formed to accept the pressure surface;the upper grooves and lower grooves form a plural of channels, the channels accept an optical fiber provided by a ribbon cable secured at a distal end of the mechanical transfer ferrule; andwherein the pressure plate secures the plural of optical fiber from movement within a corresponding channel during mating with an opposing mechanical transfer ferrule.2. The mechanical transfer ferrule of claim 1 , wherein the top housing is secured to the bottom housing with a plural of snap and snap recess.3. The mechanical claim 1 , transfer ferrule of claim 1 , wherein the top housing is secured to the bottom housing with a plural of side clip received in a side clip receiving surface.4. The mechanical transfer ferrule of claim 1 , wherein the pressure surface is angled and the pressure surface cut-out has an opposite angle at a proximal ...

END FACE POLISHING DEVICE FOR OPTICAL FIBER FERRULE

The present invention provides an end face polishing device capable of improving a polishing accuracy by polishing an end face of an optical fiber ferrule with adjusted polishing pressure. An end face polishing device for optical fiber ferrule for polishing an end face of an optical fiber ferrule by applying a polishing pressure between a polishing plate driven by a polishing drive shaft and an optical fiber ferrule held by a holding portion The end face polishing device for optical fiber ferrule has: a bearing portion for allowing the polishing plate to rotate relatively around the polishing drive shaft and to move relatively to the polishing drive shaft in an axial direction; a polishing plate guide supporting portion for movably supporting the polishing plate on a base portion to apply the polishing pressure to the holding portion by allowing the polishing plate to move in the axial direction; a pressing drive source for adjustably outputting a driving force to apply the polishing pressure; and a pressing force transmission mechanism for transmitting the driving force output from the pressing drive source as a pressing force in the axial movement direction of the polishing plate 1. An end face polishing device for optical fiber ferrule for polishing an end face of an optical fiber ferrule by applying a polishing pressure between a polishing plate driven by a polishing drive shaft and an optical fiber ferrule held by a holding portion , the end face polishing device for optical fiber ferrule comprising:a bearing portion for allowing the polishing plate to rotate relatively around the polishing drive shaft and to move relatively to the polishing drive shaft in an axial direction;a polishing plate guide supporting portion movable only in an axial movement direction of the polishing plate for movably supporting the polishing plate on a base portion to apply the polishing pressure to the holding portion by allowing the polishing plate to move in the axial direction;a ...

OPTICAL RECEPTACLE, FERRULE, AND PLUG FERRULE

According to an aspect of the invention, an optical receptacle, comprising: a fiber stub including a ferrule containing an optical fiber conducting light; a holder holding the fiber stub; and a sleeve, one end of the sleeve being capable of holding a tip of the fiber stub, one other end of the sleeve being capable of holding a plug ferrule inserted into the optical receptacle, the ferrule including a foreign matter movement suppressor in an end surface of the ferrule, the end surface being polished into a convex spherical configuration on a side to be connected to the plug ferrule, the foreign matter movement suppressor suppressing movement of foreign matter moving, due to inserting and removing the plug ferrule, from an outer circumferential portion of the ferrule toward a central portion of the end surface. It is possible to prevent the loss occurring due to the foreign matter at the outer circumferential portion of the fiber stub moving to the central portion of the end surface of the ferrule when repeatedly inserting and removing the plug ferrule into and from the optical receptacle; and it is possible to reduce the Wiggle loss by maintaining the length where the sleeve holds the fiber stub. 1. An optical receptacle , comprising:a fiber stub including a ferrule containing an optical fiber conducting light;a holder holding the fiber stub; anda sleeve, one end of the sleeve being capable of holding a tip of the fiber stub, one other end of the sleeve being capable of holding a plug ferrule inserted into the optical receptacle,the ferrule including a foreign matter movement suppressor in an end surface of the ferrule, the end surface being polished into a convex spherical configuration on a side to be connected to the plug ferrule, the foreign matter movement suppressor suppressing movement of foreign matter moving, due to inserting and removing the plug ferrule, from an outer circumferential portion of the ferrule toward a central portion of the end surface.2. The ...

MANUFACTURE AND TESTING OF FIBER OPTIC CASSETTE

A double flexible optical circuit includes: a flexible substrate supporting a plurality of optical fibers; a first connector terminating the optical fibers at a first end of the double flexible optical circuit; and a second connector terminating the optical fibers at a second end of the double flexible optical circuit. Each of the optical fibers is positioned in one of a plurality of separate extensions formed by the flexible substrate as the optical fibers extend from the first connector to the second connector. The first and second connectors are configured to be tested when the first and second connectors are connected through the double flexible optical circuit. The double flexible optical circuit is configured to be divided in half once the testing is complete to form two separate flexible optical circuits. 1. A double flexible optical circuit , comprising:a flexible substrate supporting a plurality of optical fibers;a first connector terminating the optical fibers at a first end of the double flexible optical circuit; anda second connector terminating the optical fibers at a second end of the double flexible optical circuit;wherein each of the optical fibers is positioned in one of a plurality of separate extensions formed by the flexible substrate as the optical fibers extend from the first connector to the second connector;wherein the first and second connectors are configured to be tested when the first and second connectors are connected through the double flexible optical circuit; andwherein the double flexible optical circuit is configured to be divided in half once the testing is complete to form two separate flexible optical circuits.2. The double flexible optical circuit of claim 1 , wherein the double flexible optical circuit forms a dividing line at a mid-section of the double flexible optical circuit.3. The double flexible optical circuit of claim 2 , wherein the dividing line extends through each of the extensions.4. The double flexible optical ...

METHOD FOR MANUFACTURING OPTICAL CONNECTOR

A method for manufacturing an optical connector according to one embodiment is a method for manufacturing an optical connector having a ferrule including an end face at which an optical fiber holding hole for holding an optical fiber is opened, the method including: a step of inserting the optical fiber into the optical fiber holding hole and fixing the optical fiber to expose the optical fiber at the end face; a step of polishing the end face together with the optical fiber; and a step of heating another region excluding a region where the optical fiber is exposed at the end face to make the other region higher than the region where the optical fiber is exposed. 1. A method for manufacturing an optical connector having a ferrule including an end face at which an optical fiber holding hole for holding an optical fiber is opened , the method comprising:a step of inserting the optical fiber into the optical fiber holding hole and fixing the optical fiber to expose the optical fiber at the end face;a step of polishing the end face together with the optical fiber; anda step of heating another region excluding a region where the optical fiber is exposed at the end face to make the other region higher than the region where the optical fiber is exposed.2. The method for manufacturing the optical connector according to claim 1 , wherein the other region is irradiated with a laser beam to heat the other region in the step of making the other region higher.3. The method for manufacturing the optical connector according to claim 1 , wherein the other region is heated in the step of making the other region higher so that a height of the other region with respect to the region where the optical fiber is exposed becomes 5 μm or more and 200 μm or less.4. The method for manufacturing the optical connector according to claim 1 , wherein the other region is heated in the step of making the other region higher so that a ratio of an area of the other region to a total area of the end ...

FIXTURE FOR POLISHING A FIBER OPTIC CONNECTOR HAVING A PLURAL OF FERRULES AND METHOD OF USE

A holder to polish a fiber optic connector having at least two ferrule assembly. Each ferrule assembly having a ferrule with an optical fiber therein. And a tool to rotate a ferrule assembly within the connector housing to allow opposing ferrules, with an APC surface, to transfer a light signal with minimal surface reflection, or data loss. 1. A holder:a housing with walls angled at about eight (8) degrees;a removable anchor device for securing connector with a plural of ferrules within the housing; and whereinthe housing has a pair of tabs to secure the housing to a polishing surface.2. The holder according to claim 1 , wherein at least two ferrule assembly end faces are polished to an APC angle of about eight (8) degrees.3. A polishing assembly comprising:a holder for securing a connector during polishing;the connector having a least two ferrule assemblies, and each ferrule assembly having a flange with opposing slot cuts; and a tool for rotating the ferrule assembly within the connector.4. The polishing assembly of claim 4 , wherein the tool further comprises a pair of opposing protrusions.5. The polishing assembly of claim 3 , wherein a removable anchor device secures the connector within the holder during polishing.6. A polishing assembly resulting in the configuration of .7. A method of polishing a connector having at least two ferrules comprising:{'claim-ref': {'@idref': 'CLM-00006', 'claim 6'}, 'providing a polishing assembly of ;'}inserting a connector into the holder;securing the holder to a polishing surface;polishing the ferrule end face of each connector ferrule to an APC angle;removing the polished connector from the holder;inserting the tool in a proximal end of the connector;securing the tool to a ferrule flange wherein a corresponding protrusion is accepted into a slot cut; androtating the tool about ninety (90) degrees to orient the ferrule face to allow signal transfer between two opposing APC polished ferrule end faces.8. The method of claim 7 , ...

METHOD OF LASER POLISHING A CONNECTORIZED OPTICAL FIBER AND A CONNECTORIZED OPTICAL FIBER FORMED IN ACCORDANCE THEREWITH

Laser polishing is achieved by directing laser beam perpendicular at the fiber end face in a connectorized optical fiber having a metal ferrule. The spot size of the laser beam is larger than the bare optical fiber diameter, providing a more uniform spatial distribution of the radiation energy over the fiber end face. The metal ferrule provides heat conduction to prevent excessive heat built up at the fiber tip, which would lead to undesirable surface defects and geometries. The connectorized optical fiber may be pre-shaped prior to laser polishing. Subsequent laser polishing flattens the fiber end face. 1. A method of polishing an end face of a connectorized optical fiber , comprising:providing a metal ferrule;mounting an optical fiber in the ferrule, with a fiber end face exposed by a ferrule end face; anddirecting a laser beam at the fiber end face to polish the fiber end face.2. The method of claim 1 , wherein polishing does not require any mechanical polishing after the laser beam is applied to polish the fiber end face.3. The method of claim 1 , wherein the laser beam is directed generally perpendicular to the fiber end face.4. The method of claim 3 , wherein the laser beam is defocused on the fiber end face claim 3 , with the fiber end face disposed at a predetermined distance from focus of the laser beam.5. The method of claim 4 , wherein the predetermined distance is larger than diameter of the fiber end face.6. The method of claim 5 , wherein the laser beam has a spot size that is larger than a diameter of the fiber end face.7. The method of claim 6 , wherein the spot size is several times larger than the fiber end face claim 6 , so that the fiber end face receives portion of the laser beam which is generally uniform in beam distribution.8. The method of claim 7 , wherein the spot size is about 2 to 20 times large than the fiber end face.9. The method of claim 4 , wherein optical axis of the laser beam is misaligned with center of the fiber end face.10. ...

OPTICAL FIBER CONNECTION SYSTEM

An optical fiber connection system includes a first and a second optical fiber, each with end portions that are terminated by a first and a second fiber optic connector, respectively. A fiber optic adapter connects the first and the second fiber optic connectors. A fiber alignment apparatus includes V-blocks and gel blocks. Each of the fiber optic connectors includes a connector housing and a sheath. The end portions of the optical fibers are positioned beyond distal ends of the respective connector housings. The sheath is slidably connected to the connector housing and slides between an extended configuration and a retracted configuration. The sheath covers the end portion of the respective optical fiber when the sheath is at the extended configuration and exposes the end portion when at the retracted configuration. The end portions of the optical fibers are cleaned when slid between the V-blocks and the gel blocks. 1. An optical fiber connection system comprising:a first optical fiber including an end portion with an end; a housing including a first port and a second port; and', 'a fiber alignment apparatus including a first V-block and a first gel block, the fiber alignment apparatus positioned between the first port and the second port;, 'a fiber optic adapter comprising a housing extending between a proximal end and a distal end, the first optical fiber extending through the housing and attached to the housing, the end portion of the first optical fiber positioned outside the housing beyond the distal end of the housing; and', 'a sheath slidably connected to the housing, the sheath slidable between an extended configuration and a retracted configuration, the sheath covering the end portion of the first optical fiber when the sheath is at the extended configuration, and the sheath exposing the end portion of the first optical fiber when the sheath is at the retracted configuration., 'a first fiber optic connector comprising2. The optical fiber connection system ...

SINGLE-MODE POLYMER WAVEGUIDE CONNECTOR ASSEMBLY DEVICE

Methods of forming waveguide connectors include positioning a polymer waveguide in one or more insertion structures within an inner portion of a cap where the polymer waveguide has alignment features on a connection end face corresponding to one or more components of an assembled connector. The method can include inserting a ferrule into the inner portion of the cap such that an inner wall of the cap seals around the assembled connector to prevent contaminants from entering the inner portion and heating the polymer waveguide and the ferrule to a first temperature with the ferrule comprising alignment features and having a different coefficient of thermal expansion from the polymer waveguide. The alignment features of the polymer waveguide align with the alignment features of the ferrule when the polymer waveguide and the ferrule are heated to the first temperature. 1. A method for assembling a waveguide connector , comprising:positioning a polymer waveguide in one or more insertion structures within an inner portion of a cap, wherein the polymer waveguide comprises alignment features on a connection end face corresponding to one or more components of an assembled connector;inserting a ferrule into the inner portion of the cap such that an inner wall of the cap seals around the assembled connector to prevent contaminants from entering the inner portion;heating the polymer waveguide and the ferrule to a first temperature, the ferrule comprising alignment features and having a different coefficient of thermal expansion from the polymer waveguide, wherein the alignment features of the polymer waveguide align with the alignment features of the ferrule when the polymer waveguide and the ferrule are heated to the first temperature;processing an exposed portion of the assembled connector extending from the cap; andremoving the assembled connector from the cap.2. The method of claim 1 , wherein positioning the polymer waveguide in one or more insertion structures includes ...

MICROFABRICATION METHOD FOR OPTICAL COMPONENTS

A ferrule mold having a reverse-image of a through-hole array for optical fibers is formed. A non-polymeric ferrule material is deposited in the reverse-image mold, followed by removing the mold to create a multi-fiber connector ferrule having at least two fiber through-holes. An optical fiber is inserted in each through-hole until each fiber endface is positioned approximately even with a connection surface of the ferrule. A fiber recess for each of the optical fibers is formed such that each fiber is recessed from the multi-fiber ferrule connection surface by a distance of at least 0.1 micron. The recess may be formed by differential polishing of the non-polymeric ferrule and endfaces of the optical fibers. Alternatively, a layer of spacer material may be deposited over the multi-fiber ferrule connection surface. An antireflection coating is deposited over the ferrule connection surface and ends of the recessed fibers. 1. A method for making a recessed fiber , non-contact , optical connector at an end of an optical fiber cable , the recessed fiber non-contact , optical connector having at least one optical fiber positioned in a ferrule , the method comprising:providing an optical fiber ferrule;inserting one or more optical fibers in one or more through-holes in the ferrule, the ferrule having a ferrule front surface, each through-hole being sized to accept and align an optical fiber, the one or more optical fibers being part of an optical fiber cable that does not significantly outgas in a vacuum deposition chamber;affixing the one or more optical fibers in the ferrule to form a fiber-ferrule-cable assembly;applying a multi-layer dielectric antireflection coating using a method selected from ion beam sputtering or ion-assisted e-beam deposition under a vacuum deposition condition to the recessed fiber facet and to the ferrule contact surface;selectively applying a coating as a spacer layer on top of the multi-layer dielectric antireflection coating positioned on ...

CONNECTOR STRUCTURE AND CONNECTOR CONNECTION STRUCTURE

In the present invention, a connector structure comprises a multi-core fiber and a ferrule. The multi-core fiber comprises a plurality of cores and a cladding that surrounds the cores. The ferrule holds the multi-core fiber. A tip of the multi-core fiber protrudes from an end face of the ferrule. A relation Δ≦14.8/a is satisfied. In the formula, Δ(μm) is a difference between a maximum protrusion height and a minimum protrusion height from an end face of the ferrule in a reference circle at the tip of the multi-core fiber. The reference circle is a minimum circle that includes all mode field diameters of the plurality of the cores having a center of cross section of the multi-core fiber as its center. And a(μm) is a radius of the reference circle. 1. A connector structure comprising:a multi-core fiber, which comprises a plurality of cores and a cladding that surrounds the cores; anda ferrule that holds the multi-core fiber; whereina tip of the multi-core fiber protrudes from an end face of the ferrule; and Δ(μm) is a difference between a maximum protrusion height and a minimum protrusion height from an end face of the ferrule in a reference circle at the tip of the multi-core fiber;', 'the reference circle is a minimum circle that includes all mode field diameters of the plurality of the cores having a center of cross section of the multi-core fiber as its center; and', 'a(μm) is a radius of the reference circle., 'a relation Δ≦14.8/a is satisfied, wherein'}2. The connector structure according to claim 1 , whereinone of the plurality of cores is located at the center of cross-section of the multi-core fiber; andthe core that is located at the center has a protrusion height from the end face of the ferrule greater than protrusion heights of the other cores.3. The connector structure according to claim 1 , whereina tip part of the multi-core fiber has an approximately flat flat-portion and a chamfer-portion formed on a circumference of the flat-portion; andthe ...

MULTICORE OPTICAL CONNECTOR AND METHOD OF MANUFACTURING THE SAME

A multicore optical connector includes: a ferrule in which a plurality of optical fibers with lenses are arranged and held, the optical fibers with lenses having GRIN lenses fused to tips of optical fibers; and a coupling member which couples a pair of the ferrules so that the ferrules oppose each other in a non-contact state and end faces of the ferrules are parallel to each other, wherein the ferrules each have an end face inclined by a set angle θrelative to a central axis Of, the GRIN lenses are arranged and held parallel to the central axis Of so that a center of arrangement Op is at a position eccentric by Δt relative to the central axis Of, and the optical fibers with lenses held by the pair of the ferrules have end faces of the GRIN lenses inclined along the end faces of the ferrules. 1. A multicore optical connector , comprising: a ferrule in which a plurality of optical fibers with lenses are arranged and held , said optical fibers with lenses having GRIN lenses fused to tips of optical fibers; and a coupling member which couples a pair of said ferrules so that said ferrules oppose each other in a non-contact state and end faces of said ferrules are parallel to each other , whereinsaid ferrules each have said end face inclined by a set angle relative to a central axis, and said GRIN lenses are arranged and held parallel to said central axis so that a center of arrangement is at a position eccentric relative to said central axis, andsaid optical fibers with lenses held by the pair of said ferrules have end faces of said GRIN lenses inclined along said end faces of said ferrules so that said optical fibers with lenses are optically coupled to each other, and in said optical fibers with lenses arranged in an inclination direction of said end faces of said ferrules, fusing positions between said GRIN lenses and said optical fibers are arranged so as to be inclined along said end faces.2. A method of manufacturing a multicore optical connector including a ...

TELECOMMUNICATION ENCLOSURE HAVING INTEGRATED TERMINATION TOOLS

A communication enclosure is described that includes an enclosure body having a first body portion and a second body portion. An adapter mounting mechanism is disposed in the first body portion, and a connector adapter mounted into the mounting mechanism that is configured to accept an optical fiber connector. The enclosure includes at least one integrated tool for terminating field mountable optical fiber connectors wherein the at least one integrated tool is disposed on one of the first body portion and the second body portion. In an exemplary aspect, the at least one integrated tool is a connector polishing platform. 1. A communication enclosure , comprising:an enclosure body that includes a first body portion and a second body portion;an adapter mounting mechanism disposed on the first body portion;a connector adapter mounted into the mounting mechanism that is configured to accept an optical fiber connector; andat least one integrated tool for terminating an optical fiber connector wherein the at least one integrated tool is disposed on one of the first body portion and the second body portion.2. The enclosure of claim 1 , wherein the at least one integrated tool is a connector polishing platform.3. The enclosure of claim 1 , further comprising a slack storage system for retaining excess lengths of optical fiber.4. The enclosure of claim 3 , wherein the slack storage system includes a plurality of retention tabs disposed periodically around the optical connector polishing platform.5. The enclosure of claim 1 , wherein the mounting mechanism is configured to accept a plurality of connector adapters.6. The enclosure of claim 1 , wherein the enclosure is a network interface device.7. The enclosure of claim 1 , wherein the enclosure is a terminal.8. The enclosure of claim 1 , wherein the enclosure is a closure/terminal.9. The enclosure of claim 2 , wherein the optical connector polishing platform comprises a base portion to support a polishing media claim 2 , and a ...

METHOD AND APPARATUS FOR FORMING A CONVEX END FACE IN A FERRULE

A method of processing a ferrule end face using at least one grinding wheel rotatable about a central axis and having a working surface with an abrasive element is provided. The method includes holding the ferrule stationary, engaging the end face of the ferrule and the working surface of the at least one grinding wheel, rotating the at least one grinding wheel about the central axis, and moving the at least one grinding wheel relative to the ferrule along a curve perpendicular to the central axis. Processing the ferrule in this manner imparts a convex shape of the end face of the ferrule. An apparatus for carrying out the method is also disclosed. 1. A method of processing a ferrule that includes an end face using at least one grinding wheel that is rotatable about a central axis , the at least one grinding wheel having a working surface that includes an abrasive element , the method comprising:holding the ferrule stationary;engaging the end face of the ferrule and the working surface of the at least one grinding wheel;rotating the at least one grinding wheel about the central axis; andmoving the at least one grinding wheel relative to the ferrule along a curve perpendicular to the central axis,wherein processing the ferrule with the at least one grinding wheel imparts a convex shape on the end face of the ferrule.2. The method of claim 1 , wherein the curve along which the at least one grinding wheel is moved relative to the ferrule lies within a plane perpendicular to the central axis.3. The method of claim 1 , wherein the curve along which the at least one grinding wheel is moved relative to the ferrule has a constant radius of curvature.4. The method of claim 3 , wherein the working surface of the at least one grinding wheel has a constant radius of curvature in a plane that is parallel to the central axis claim 3 , and wherein the constant radius of curvature of the curve along which the at least one grinding wheel is moved relative to the ferrule is equal to ...

Multifiber Connectorization Techniques for Multicore Optical Fiber Cables

Structures and techniques are described relating to the alignment of multicore fibers within a multifiber connector. These structures and techniques include: multicore fibers having a number of different shapes, including, for example, circular, elliptical, D-shaped, double D-shaped, and polygonal; multifiber ferrules, having a plurality of fiber guide holes therein of various shapes; alignment fixtures for aligning multicore fibers within multifiber ferrules; and various multicore fiber alignment techniques.

CONNECTORIZATION TECHNIQUES FOR POLARIZATION-MAINTAINING AND MULTICORE OPTICAL FIBER CABLES

An optical fiber ferrule has a plurality of guide holes therein for guiding a respective plurality of flat-sided fibers at an end of a multifiber optical fiber cable. The fibers' flat sides identify a particular rotational orientation of the fiber. Rotational alignment is achieved by urging the fibers' flat sides against a corresponding reference surface within the ferrule or within an alignment fixture. Also described is a fiber array block having a plurality of V-shaped grooves extending across an outer surface and terminating at an endface. The V-shaped grooves are shaped to guide a respective plurality of flat-sided fibers. A lid is installable across the plurality of V-shaped grooves, over fibers that have been loaded therein. 1. A method for aligning polarization-maintaining fibers within a multifiber ferrule , comprising:(a) stripping an end portion of a polarization-maintaining fiber cable containing a plurality of polarization-maintaining fibers, so as to expose the bare polarization-maintaining fibers, wherein the polarization-maintaining fibers each have at least one flat side surface identifying a particular rotational orientation of a fiber transmission axis;(b) inserting the exposed polarization-maintaining fibers into a plurality of guide holes defined longitudinally through a ferrule subassembly;(c) using the flat side surfaces to align the transmission axes, in a predetermined rotational orientation, relative to the ferrule;(d) bonding the polarization-maintaining fiber within the ferrule;(e) trimming the fiber at a ferrule endface so as to create a plurality of polarization-maintaining fiber endfaces protruding from the ferrule endface; and(f) polishing the polarization-maintaining fiber endfaces.2. The method of claim 1 ,wherein, in step (b), the plurality of guide holes includes one or more guide holes having a cross sectional profile including a flat side reference surface corresponding to the one or more flat side surfaces of the polarization- ...

Process for Polishing End Face of Gigabit Plastic Optical Fiber

A process for polishing the end face of a gigabit plastic optical fiber (GbPOF) to produce a mirror smooth surface without any defect. Smooth GbPOF end faces reduce the optical coupling loss when two plastic optical fibers are connected. The polishing process can be used to produce GbPOF end faces which are free of defects such as scratches. The polishing process involves the use of successive abrasive films having decreasing surface roughness to abrade the end of a GbPOF. More specifically, each subsequently applied abrasive film has a mean particle size which is less than the mean particle size of the previously applied abrasive film. 1: A process for polishing an end face of a plastic optical fiber made of perfluorinated polymer material , comprising:(a) abrading a dry end face of the plastic optical fiber for a first time duration using a first abrasive film having a first mean particle size approximately equal to 3 microns;(b) after step (a), abrading the dry end face of the plastic optical fiber for a second time duration using a second abrasive film having a second mean particle size approximately equal to 1 micron; and(c) after step (b), abrading the dry end face of the plastic optical fiber for a third time duration using a third abrasive film having a third mean particle size approximately equal to 0.3 micron.2. (canceled)3: The process as recited in claim 1 , wherein a pressure of 1.5 pounds is applied during steps (a) and (b) claim 1 , and a pressure of 0.5 pound is applied during step (c).4: The process as recited in claim 1 , wherein the first duration is six minutes claim 1 , the second duration is four minutes claim 1 , and the third duration is four minutes.5: The process as recited in claim 1 , wherein the abrasive particles of the first and second abrasive films are diamond particles.6: The process as recited in claim 5 , wherein the abrasive particles of the third abrasive film are aluminum oxide particles.7: The process as recited in claim 1 , ...

MANUFACTURE AND TESTING OF FIBER OPTIC CASSETTE

A double flexible optical circuit includes: a flexible substrate supporting a plurality of optical fibers; a first connector terminating the optical fibers at a first end of the double flexible optical circuit; and a second connector terminating the optical fibers at a second end of the double flexible optical circuit. Each of the optical fibers is positioned in one of a plurality of separate extensions formed by the flexible substrate as the optical fibers extend from the first connector to the second connector. The first and second connectors are configured to be tested when the first and second connectors are connected through the double flexible optical circuit. The double flexible optical circuit is configured to be divided in half once the testing is complete to form two separate flexible optical circuits. 1. A double flexible optical circuit , comprising:a flexible substrate supporting a plurality of optical fibers;a first connector terminating the optical fibers at a first end of the double flexible optical circuit; anda second connector terminating the optical fibers at a second end of the double flexible optical circuit;wherein each of the optical fibers is positioned in one of a plurality of separate extensions formed by the flexible substrate as the optical fibers extend from the first connector to the second connector;wherein the first and second connectors are configured to be tested when the first and second connectors are connected through the double flexible optical circuit; andwherein the double flexible optical circuit is configured to be divided in half once the testing is complete to form two separate flexible optical circuits.2. The double flexible optical circuit of claim 1 , wherein the double flexible optical circuit forms a dividing line at a mid-section of the double flexible optical circuit.3. The double flexible optical circuit of claim 2 , wherein the dividing line extends through each of the extensions.4. The double flexible optical ...

TOOLS AND METHODS FOR PREPARING A FERRULE-LESS OPTICAL FIBER CONNECTOR

A tool set for terminating an optical fiber with a fiber optic connector includes a crimping tool and a polishing tool. The crimping tool includes a locating feature for locating a housing of the fiber optic connector, a stop for locating an end of an optical fiber relative to the housing, and at least one anvil for crimping a crimp of the fiber optic connector to secure a position of the optical fiber relative to the housing. The polishing tool includes a locating feature for locating the housing and thereby locating the end of the optical fiber and a seat for activating a compression member of the fiber optic connector thereby securing the end of the optical fiber to the polishing tool. 1. A crimping tool for use with a ferrule-less fiber optic connector , the crimping tool comprising:a locating feature for locating a housing of the ferrule-less fiber optic connector;a stop for locating an end of an optical fiber and thereby locating the end of the optical fiber at a position relative to the housing of the ferrule-less fiber optic connector; andat least one anvil for crimping a crimp of the ferrule-less fiber optic connector and thereby securing the position of the end of the optical fiber relative to the housing of the ferrule-less fiber optic connector.2. The crimping tool of claim 1 , further comprising a channel for holding a retractable sheath of the ferrule-less fiber optic connector claim 1 , the channel positioned between the stop and the anvil.3. A polishing tool for use with a ferrule-less fiber optic connector claim 1 , the polishing tool comprising:a locating feature for locating a housing of the ferrule-less fiber optic connector and thereby locating an end portion of an optical fiber terminated by the ferrule-less fiber optic connector; anda seat for activating a compression member of the ferrule-less fiber optic connector and thereby securing the end portion of the optical fiber to the polishing tool.4. The polishing tool of claim 3 , further ...

Systems and Techniques for Improving Insertion Loss Performance of Multicore Fiber Connectors

Structures and techniques are described for aligning multicore optical fibers in a multicore optical fiber cable having a plurality of optical fiber cores, at least one end portion and a protective coating. The protective coating is removed from the end portion of the multicore fiber cable to create an exposed end portion of the multicore fiber. The exposed end portion of the multicore fiber is inserted into a guide hole defined longitudinally through a ferrule subassembly. The cores of the fiber are aligned rotationally, in a predetermined orientation, relative to the ferrule. Each fiber is biased within its respective guide hole in a predetermined orientation relative to the ferrule. The multicore fiber is bonded within the ferrule. The fiber is trimmed at the ferrule tip and the ferrule and fiber end faces are polished, so that a selected alignment of the multicore fiber is achieved. 1. A method of aligning multicore optical fibers in a multicore optical fiber cable having a plurality of optical fiber cores , at least one end portion and a protective coating , the method comprising:stripping an end portion of the multicore fiber cable, to create an exposed, bare end portion of the multicore fiber,inserting the bare end portion of the multicore fiber into a guide hole defined longitudinally through a ferrule subassembly,aligning the cores of the fiber rotationally, in a predetermined orientation, relative to the ferrule,biasing each fiber within the fiber guide hole, in a predetermined orientation relative to the ferrule,bonding the multicore fiber within the ferrule, andtrimming the fiber at the ferrule tip and polishing the ferrule end face, so that a selected alignment of the multicore fiber is achieved.2. The method of claim 1 , wherein a selected rotational alignment of the multicore fiber is achieved with respect to a second multicore fiber mounted into a mating optical connector.3. The method of claim 1 , wherein a selected rotational alignment of the ...

FERRULE ASSEMBLY WITH SACRIFICIAL OPTICAL FIBER

The present disclosure relates to a fiber optic component including a ferrule having a distal end and a proximal end. The ferrule defines a fiber passage extending though the ferrule along a fiber passage axis in a proximal-to-distal orientation. The fiber optic component also includes an optical fiber structure affixed within the fiber passage. The optical fiber structure includes a beam expansion section optically coupled to a sacrificial section. The beam expansion section has a construction adapted to expand an optical beam from a first beam diameter to an enlarged second beam diameter. The sacrificial section is configured to receive the optical beam having the second beam diameter from the beam expansion section. The sacrificial section is positioned at the distal end of the ferrule and has a polished end face at the distal end of the ferrule. The sacrificial section has a core-less construction or has a core with a core diameter that is larger than the enlarged second beam diameter. 1. A fiber optic component comprising:a ferrule having a distal end and a proximal end, the ferrule defining a fiber passage extending though the ferrule along a fiber passage axis in a proximal-to-distal orientation; andan optical fiber structure affixed within the fiber passage, the optical fiber structure including a beam expansion section optically coupled to a sacrificial section, the beam expansion section having a construction adapted to expand an optical beam from a first beam diameter to an enlarged second beam diameter, the sacrificial section being configured to receive the optical beam having the second beam diameter from the beam expansion section, the sacrificial section being positioned at the distal end of the ferrule, the sacrificial section having a polished end face at the distal end of the ferrule, and the sacrificial section having a core-less construction or having a core with a core diameter that is larger than the enlarged second beam diameter.2. The fiber ...

OPTICAL FIBER CONNECTOR

An optical fiber connection system includes a first and a second optical fiber, each with end portions that are terminated by a first and a second fiber optic connector, respectively. A fiber optic adapter connects the first and the second fiber optic connectors. The fiber optic adapter includes a housing and a fiber alignment apparatus. The fiber alignment apparatus includes V-blocks and gel blocks. Each of the fiber optic connectors includes a connector housing and a sheath. The end portions of the optical fibers are positioned beyond distal ends of the respective connector housings. The sheath is slidably connected to the connector housing and slides between an extended configuration and a retracted configuration. The sheath covers the end portion of the respective optical fiber when the sheath is at the extended configuration and exposes the end portion when at the retracted configuration. The end portions of the optical fibers are cleaned when slid between the V-blocks and the gel blocks. 131-. (canceled)32. A fiber optic connector for terminating an optical fiber , the fiber optic connector comprising:a housing extending between a proximal end and a distal end, the housing adapted to attach to the optical fiber; anda sheath slidably connected to the housing, the sheath slidable between an extended configuration and a retracted configuration, the sheath adapted to slide over an end portion of the optical fiber that extends beyond the distal end of the housing when the sheath is slid to the extended configuration, the sheath adapted to slide over the end portion of the optical fiber to expose the end portion of the optical fiber when the sheath is slid to the refracted configuration, and the sheath including a compression member at a distal end of the sheath adapted to hold the end portion of the optical fiber when the end portion of the optical fiber is being polished, the compression member adapted to release the end portion of the optical fiber when the ...

High Density Multi-Fiber Bundle and Method of Alignment for Fiber Optic Interconnection Applications

A new fiber optic bundle with new features, designs and manufacturing processes, specifically related to the configurations and the special manufacturing methods of High Density Multi-fiber Bundles for fiber optic interconnection applications has been developed for 19 fibers and 37 fibers. Fiber bundles greater than 37 fibers are also included. 181. The layers in each bundle are divided in ODD and EVEN where the EVEN layers are shifted by the Shift Angle (SA). (See Equation 8.9 and FIG. (.). The ODD layers DO NOT shift.263. The EVEN layers in the bundle will be shifted either to clockwise (right) or counterclockwise (left) of the ODD layers. See FIG. (.).351. The method of further comprising all bundles are aligned in a circular mode controlled by a pre-alignment metal tube that maintains the circular shape. See FIG. (.).4. The method of further comprising the circular pre-alignment metal tube guarantees the correct geometry needed for the final alignment.5. The method of further comprising the multi-fiber metal ferrule tip deformation has to be performed in multiple stages to guarantee the proper Shift Angle of the EVEN layers of the fiber bundle.6. The method of further comprising The four main methods to achieve multi-fiber alignment are:a) Dynamically wrapping metal ferrule tip to obtain minimum shape and volume.{'b': 6', '3, 'b) Matching of the Curve Symmetrical Lines of Bundle [A] and Bundle [B]. See FIG. (.).'}{'b': 6', '3, 'c) Alignment of Precision Ferrule Keys in Bundle [A] and Bundle [B] for connector application. See FIG. (.).'}d) Identification of the Shift Angle orientation for the EVEN layers in the bundle.7. The method of further comprising The Shift Angle (SA) gets smaller with larger bundles. See Equation (8.9).8. The method of further comprising Connector applications require two precision ferrule bundles claim 2 , each with an alignment key.9. The method of further comprising For connector applications claim 8 , a key on each fiber bundle is used ...

OPTICAL FIBRE CONNECTOR PLUG AND ASSEMBLY METHOD THEREFOR

An optical fiber connector includes: a plug assembly holding an optical fiber ribbon. The optical fiber ribbon includes bare fibers with ground end faces. The plug assembly includes a precision guiding device and a fixing device. The precision guiding device positions the bare fibers, the fixing device holds the optical fiber ribbon, and the precision guiding device and the fixing device are detachably connected to each other. 1. An optical fiber connector plug , comprising a plug assembly holding an optical fiber ribbon , the optical fiber ribbon comprising bare fibers with ground end faces , the plug assembly comprising a precision guiding device and a fixing device , the precision guiding device positioning the bare fibers , the fixing device holding the optical fiber ribbon , and the precision guiding device and the fixing device detachably connected to each other.2. The optical fiber connector plug of claim 1 , wherein the precision guiding device defines a micropore array claim 1 , the micropore array is in clearance fit with the bare fibers claim 1 , and the ground end faces extend out of the fixing device through the micropore array.3. The optical fiber connector plug of claim 2 , wherein the ground end faces extend out of the fixing device by 0.01-0.3 mm.4. The optical fiber connector plug of claim 2 , further comprising a lens unit attached to an end face of the precision guiding device claim 2 , wherein an inner surface of the lens unit presses the ground end faces of the bare fibers and pushes the bare fibers backwards claim 2 , so as to bend the optical fiber ribbon in the precision guiding device.5. The optical fiber connector plug of claim 4 , wherein the fixing device comprises a locating unit and a cover plate claim 4 , the locating unit defines a plurality of fixing grooves claim 4 , the bare fibers are receiving in the fixing grooves claim 4 , and the cover plate presses on the fixing grooves.6. The optical fiber connector plug of claim 5 , ...

FIBER OPTIC CONNECTOR WITH FIELD INSTALLABLE OUTER CONNECTOR HOUSING

An optical connector includes a first sub-assembly that is factory-installed to a first end of an optical fiber and a second sub-assembly that is field-installed to the first end of the optical fiber. The optical fiber and first sub-assembly can be routed through a structure (e.g., a building) prior to installation of the second sub-assembly. The second sub-assembly interlocks with the first sub-assembly to inhibit relative axial movement therebetween. Example first sub-assemblies include a ferrule, a hub, and a strain-relief sleeve that mount to an optical fiber. Example second sub-assemblies include a mounting block; and an outer connector housing forming a plug portion. 1. (canceled)2. A plug connector kit for installation about a pre-terminated ferrule assembly to connectorize the pre-terminated ferrule assembly , the pre-terminated ferrule assembly including a ferrule carried by a ferrule hub , the plug connector kit comprising:an plug connector housing extending between front end and a rear end, the outer connector housing defining an interior passage extending through the outer connector housing between the front end and the rear end, the interior passage having a first portion sized to receive the ferrule hub, the interior passage also having a second portion that is smaller than the first portion, the first portion transitioning to the second portion at an internal ferrule stop, the rear end of the plug connector housing providing access to the first portion of the interior passage; anda laterally-mountable rear housing extending between a front end and a rear end, the front end of the rear housing including a spring stop, the rear housing being configured to snap-fit to the plug connector housing.3. The plug connector kit of claim 2 , further comprising a spring extending between a front and a rear claim 2 , the rear of the spring being sized and shaped to mount over the first spring stop of the rear housing claim 2 , the front of the spring being sized ...

TELECOMMUNICATION ENCLOSURE HAVING INTEGRATED TERMINATION TOOLS

A communication enclosure is described that includes an enclosure body having a first body portion and a second body portion. An adapter mounting mechanism is disposed in the first body portion, and a connector adapter mounted into the mounting mechanism that is configured to accept an optical fiber connector. The enclosure includes at least one integrated tool for terminating field mountable optical fiber connectors wherein the at least one integrated tool is disposed on one of the first body portion and the second body portion. In an exemplary aspect, the at least one integrated tool is a connector polishing platform. 1. A communication enclosure , comprising:an enclosure body that includes a first body portion and a second body portion, wherein the second body portion is hingeably attached to the first body portion to provide access to the interior of the communication enclosure;an adapter mounting mechanism disposed on the first body portion;a connector adapter mounted into the mounting mechanism that is configured to accept an optical fiber connector; andat least one integrated tool used in mounting a field mountable optical fiber connector on an optical fiber cable wherein a base portion of the at least one integrated tool is integrally molded in one of the first body portion and the second body portion.2. The enclosure of claim 1 , wherein the at least one integrated tool is a connector polishing platform.3. The enclosure of claim 1 , further comprising a slack storage system for retaining excess lengths of optical fiber.4. The enclosure of claim 3 , wherein the slack storage system includes a plurality of retention tabs disposed periodically around the base portion of the integrated tool to guide and retain the excess lengths of optical fiber.5. The enclosure of claim 1 , wherein the mounting mechanism is configured to accept a plurality of connector adapters.6. The enclosure of claim 1 , wherein the enclosure is a network interface device.7. The enclosure ...

ABRASIVE FILM

Provided is an abrasive film not likely to cause an end face defect of an optical fiber connector due to variation in load conditions during polishing, while providing a great grinding force. The abrasive film comprises a substrate film and an abrasive layer overlaid thereon, the abrasive layer comprising abrasive particles and a binder therefor and a wear quantity of the abrasive layer being from 10 mg to 25 mg. A content of the abrasive particles in the abrasive layer is preferably no less than 85% by mass. The abrasive particles preferably comprise first abrasive particles (primary particle diameter: of no less than 10 nm and less than 50 nm), and second abrasive particles (primary particle diameter: no less than 50 nm and less than 250 nm). An average thickness of the abrasive layer is preferably from 4 μm to 15 μm. The abrasive particles are preferably silica particles.

END FACE PROTECTION TAPE FOR FIBER OPTIC CONNECTOR; AND METHODS

Aspects and techniques of the present disclosure relate to a fiber optic connector assembly including a fiber optic connector with a front end and a back end. A ferrule positioned at the front end. The ferrule has a distal end face with a central region and recessed regions on opposite sides of the central region. The assembly includes a dust cap mounted on the ferrule. The dust cap has an open end and an opposite closed end. The fiber optic connector assembly also includes a tape member that covers the central region of the ferrule. The tape member can be secured to the dust cap such that when the dust cap is removed, the tape member simultaneously comes off with the dust cap. 117.-. (canceled)18. A fiber optic connector comprising:a connector body with a front end and a back end;a ferrule positioned at the front end of the connector body, the ferrule including a contact face at the front end, the ferrule including major sides that extends along a major axis defined by the contact face and minor sides that extend along a minor axis defined by the contact face, the major and minor axes being perpendicular to one another, the ferrule defining fiber passages positioned at a central region of the contact face of the ferrule, the fiber passages extending through a depth of the ferrule from a rear end of the ferrule to a front end of the ferrule, the fiber passages being arranged in a row that extends along the major axis of the contact face, the ferrule also including alignment structures positioned on opposite sides of the central region for aligning ferrules desired to be coupled together;a plurality of optical fibers that extend through the fiber passages of the ferrule in the central region of the contact face, the plurality of optical fibers having polished end faces accessible at the front end of the ferrule; anda length of tape covering the central region of the contact face of the ferrule, the length of tape extending between a first free end and an opposite, ...

OPTICAL CONNECTOR FERRULE, SLEEVE, AND METHOD FOR MANUFACTURING FERRULE MEMBER

An object is to provide an optical fiber connector ferrule, a sleeve, and a method for manufacturing a ferrule member that can avoid an increase in manufacturing time and an increase in cost of optical connectors for connecting multicore optical fibers. The present invention provides an optical fiber connector ferrule, a sleeve, and a method for manufacturing ferrule member which realizes alignment of multicore optical fibers corresponding to the connection by mounting a ferrule on a multicore fiber and then cutting a ferrule member instead of aligning core positions by rotating an axis of an optical fiber and adjusting positions of cores to the ferrule, leading to simplification of a rotational alignment step. 1. An optical connector ferrule comprising:a cylindrical member through which a coated optical fiber core wire including a plurality of cores extends;a V-groove arranged on one bus of the cylindrical member; anda cut portion formed on a side surface of the cylindrical member so as to be parallel to a bottom surface of the cylindrical member.2. The optical connector ferrule according to claim 1 , wherein the cylindrical member is configured to be divided into two parts in a plane including a central axis.3. The optical connector ferrule according to claim 1 , wherein the cylindrical member has a protrusion on an intersection line of the plane including the cut portion and an inner wall claim 1 , the protrusion being configured to enter a side surface of the coated optical fiber core wire.4. The optical connector ferrule according to claim 1 , wherein the optical connector ferrule is configured to be inserted into a sleeve through a guide hole in the sleeve claim 1 , the optical connector ferrule having been cut at the cut portion with the coated optical fiber core wire extending through the cylindrical member; andthe sleeve further comprising an alignment pin arranged in the guide hole and fitted in the V-groove.5. A method for manufacturing a ferrule member ...

End face protection tape for fiber optic connector; and methods

Aspects and techniques of the present disclosure relate to a fiber optic connector assembly including a fiber optic connector with a front end and a back end. A ferrule positioned at the front end. The ferrule has a distal end face with a central region and recessed regions on opposite sides of the central region. The assembly includes a dust cap mounted on the ferrule. The dust cap has an open end and an opposite closed end. The fiber optic connector assembly also includes a tape member that covers the central region of the ferrule. The tape member can be secured to the dust cap such that when the dust cap is removed, the tape member simultaneously comes off with the dust cap.

METHOD, APPARATUS AND SYSTEM FOR ALIGNING OPTICAL TRANSPORTS IN A FERRULE

A pair of optical ferrules is disclosed. Each of a first ferrule and a second ferrule of the pair may include at least one protrusion and at least one recess. Each of the protrusions or recesses may have at least one channel for holding an optical fiber. Upon mating the two ferrules, the protrusion of the first ferrule is configured to be inserted into the recess of the second ferrule and the protrusion of the second ferrule is configured to be inserted into the recess of the first ferrule such that the optical fibers held in each protrusion are optically aligned to be connected face to face with the optical fibers held in the corresponding recess of the other ferrule. 1. A mated pair of optical ferrules , comprising: at least a first protrusion having at least one fiber channel for holding an optical fiber; and', 'at least a first recess having at least one fiber channel for holding an optical fiber, wherein the at least first recess is slidable with respect to the at least first protrusion such that the surface of the at least first recess may be justified with the surface of the at least one first protrusion; and, 'a first ferrule comprising at least a second protrusion having at least one fiber channel for holding an optical fiber; and', 'at least a second recess having at least one fiber channel for holding an optical fiber, wherein the at least second recess is slidable with respect to the at least second protrusion such that the surface of the at least second recess may be justified with the surface of the at least second protrusion,, 'a second ferrule comprising the at least first protrusion is configured to be inserted into the at least second recess, such that the optical fiber held in the at least first protrusion is optically aligned to be connected face to face with the optical fiber held in the at least second recess, and', 'the at least second protrusion is configured to be inserted into the at least first recess such that the optical fiber held in ...

OPTICAL FIBER POLISHER WITH RAMPING FEATURES

An optical fiber polisher includes a polishing mechanism, a platen, and a memory for storing operational parameters entered by a user. The optical fiber polisher includes a processor to control a pressure applied by the polishing mechanism and a rotational speed of the platen, including causing a ramping down of at least one of the pressure and the rotational speed based on the operational parameters. 1. An optical fiber polisher , comprising:a polishing mechanism;a platen;a memory for storing operational parameters entered by a user; anda processor to control a pressure applied by the polishing mechanism and a rotational speed of the platen, including causing a ramping down of at least one of the pressure and the rotational speed based on the operational parameters.2. The optical fiber polisher of claim 1 , wherein the processor causes a ramping down of the pressure based on the operational parameters.3. The optical fiber polisher of claim 1 , wherein the processor causes a ramping down of the rotational speed based on the operational parameters.4. The optical fiber polisher of claim 1 , wherein the processor causes a ramping down of both the pressure and the rotational speed based on the operational parameters.5. The optical fiber polisher of claim 4 , wherein the operational parameters include a speed ramp down time claim 4 , and wherein the processor causes the ramping down of the rotational speed over a time period defined by the speed ramp down time.6. The optical fiber polisher of claim 4 , wherein the operational parameters include a pressure ramp down time claim 4 , and wherein the processor causes the ramping down of the pressure over a time period defined by the pressure ramp down time.7. The optical fiber polisher of claim 4 , wherein the operational parameters include a delay parameter claim 4 , and wherein the processor causes an ending of the ramping down of the rotational speed to occur later in time than an ending of the ramping down of the pressure ...

FIBER OPTIC CONNECTOR WITH FIELD INSTALLABLE OUTER CONNECTOR HOUSING

An optical connector includes a first sub-assembly that is factory-installed to a first end of an optical fiber and a second sub-assembly that is field-installed to the first end of the optical fiber. The optical fiber and first sub-assembly can be routed through a structure (e.g., a building) prior to installation of the second sub-assembly. The second sub-assembly interlocks with the first sub-assembly to inhibit relative axial movement therebetween. Example first sub-assemblies include a ferrule, a hub, and a strain-relief sleeve that mount to an optical fiber. Example second sub-assemblies include a mounting block; and an outer connector housing forming a plug portion. 1. (canceled)2. A connectorized cable assembly comprising:a first sub-assembly including an optical fiber, the optical fiber carrying a strain relief sleeve having a central opening through which the strain relief sleeve receives the optical fiber, the strain relief sleeve including an interlock arrangement, the sub-assembly also including a ferrule carrying a terminated end of the optical fiber so that the terminated end of the optical fiber is accessible from an end face of the ferrule, the sub-assembly also including a spring disposed between the ferrule and the strain relief sleeve; anda second sub-assembly that can be installed over the first sub-assembly, the second sub-assembly including a rear housing and a front housing, the rear housing mounting over the interlock arrangement of the strain relief sleeve at a spaced location from the ferrule, the interlock arrangement inhibiting axial movement of the rear housing relative to the strain relief sleeve, the front housing mounting over the ferrule and the spring, and the front housing attaching to the rear housing.3. The connectorized cable assembly of claim 2 , wherein the rear housing is laterally mounted over the interlock arrangement.4. The connectorized cable assembly of claim 3 , wherein the rear housing includes a first housing piece ...

OPTICAL SUB-MODULE

An optical sub-module comprises a lens and a optical fiber ferrule assembled with the lens, the lens comprises a receiving hole receiving the optical fiber ferrule; wherein the optical fiber ferrule includes a mating surface mating with the lens and a refractive index matching epoxy disposed on the mating surface for reducing optical return loss, and the mating surface has an APC-type end. 1. An optical sub-module comprising:a lens comprising a receiving hole receiving the optical fiber ferrule; andan optical fiber ferrule assembled with the lens; whereinthe optical fiber ferrule includes a mating surface mating with the lens and a refractive index matching epoxy disposed on the mating surface for reducing optical return loss, and the mating surface has an APC(Angled physical contact)-type end.2. The optical sub-module as claimed in claim 1 , wherein the lens includes a bottom surface located on the bottom of the receiving hole and mating with the optical fiber ferrule.3. The optical sub-module as claimed in claim 2 , wherein the mating surface includes a mating end mating with the bottom surface.4. The optical sub-module as claimed in claim 3 , wherein the mating end is parallel to the bottom surface.5. The optical sub-module as claimed in claim 3 , wherein the mating end connects with the APC-type end and is located on the top of the APC-type end.6. The optical sub-module as claimed in claim 1 , wherein the APC-type end is spherical with a certain angle.7. The optical sub-module as claimed in claim 6 , wherein the APC-type end has a grinding angle range of 4° to 45°.8. The optical sub-module as claimed in claim 6 , wherein the grinding angle of the APC-type is 8°.9. The optical sub-module as claimed in claim 1 , wherein the optical fiber ferrule includes a surface distal from the lens claim 1 , the surface having a PC-type end.10. The optical sub-module as claimed in claim 1 , wherein the lens further includes a reflective surface for emitting light.11. An optical ...

Optical fiber ferrule polishing holder

In an optical fiber ferrule polishing holder 20 used for polishing an optical fiber ferrule 30 having a rectangular cross section, the optical fiber ferrule polishing holder 20 having: a body part 21 having an insertion hole 21 A into which the optical fiber ferrule 30 can be inserted, the body part 21 being capable of abutting on the optical fiber ferrule 30 at a support wall 21 A 1 of the insertion hole 21 A; and a fixing part 25 ( 29 ) having a pressing wall 25 B ( 29 B) for pressing the optical fiber ferrule 30 to the support wall 21 A 1 at a predetermined pressure, wherein the support wall 21 A 1 is inclined at a predetermined angle with respect to a vertical axis which is vertically extended from a polishing surface 13 of an optical fiber ferrule polishing machine 10 , and the support wall 21 A 1 has a protrusion 21 C toward the pressing wall 25 B ( 29 B).

OPTICAL FIBER CONNECTION SYSTEM

An optical fiber connection system includes a first and a second optical fiber, each with end portions that are terminated by a first and a second fiber optic connector, respectively. A fiber optic adapter connects the first and the second fiber optic connectors. A fiber alignment apparatus includes V-blocks and gel blocks. Each of the fiber optic connectors includes a connector housing and a sheath. The end portions of the optical fibers are positioned beyond distal ends of the respective connector housings. The sheath is slidably connected to the connector housing and slides between an extended configuration and a retracted configuration. The sheath covers the end portion of the respective optical fiber when the sheath is at the extended configuration and exposes the end portion when at the retracted configuration. The end portions of the optical fibers are cleaned when slid between the V-blocks and the gel blocks. 1. An optical fiber connection system comprising:a first optical fiber including an end portion with an end; a housing including a first port and a second port; and', 'a fiber alignment apparatus including a first V-block and a first gel block, the fiber alignment apparatus positioned between the first port and the second port;, 'a fiber optic adapter comprising a housing extending between a proximal end and a distal end, the first optical fiber extending through the housing and attached to the housing, the end portion of the first optical fiber positioned outside the housing beyond the distal end of the housing; and', 'a sheath slidably connected to the housing, the sheath slidable between an extended configuration and a retracted configuration, the sheath covering the end portion of the first optical fiber when the sheath is at the extended configuration, and the sheath exposing the end portion of the first optical fiber when the sheath is at the retracted configuration., 'a first fiber optic connector comprising2. The optical fiber connection system ...

METHODS OF FERRULE RESHAPING FOR CORRECTING CORE-TO-FERRULE CONCENTRICITY ERRORS, AND OPTICAL FIBER CABLE ASSEMBLIES RELATED TO SUCH METHODS

Methods of reshaping ferrules used in optical fiber cables assemblies are disclosed. The reshaping methods reduce a core-to-ferrule concentricity error (E), which improves coupling efficiency and optical transmission. The methods include measuring a true center of the ferrule, wherein the true center is based on an outer surface of the ferrule; and reshaping at least a portion of the ferrule to change the true center of the ferrule, wherein the reshaping includes enlarging a portion of the ferrule. A variety of reshaping techniques are also disclosed. 1. A method for reducing a core-to-ferrule concentricity error for a ferrule having an axial bore sized to operably support an optical fiber having a core , the method comprising:measuring a true center of the ferrule, wherein the true center is based on an outer surface of the ferrule; andreshaping at least a portion of the ferrule to change the true center of the ferrule, wherein the reshaping includes enlarging a portion of the ferrule.2. The method according to claim 1 , wherein the step of enlarging a portion of the ferrule includes forming one or more protuberances on the outer surface of the ferrule.3. The method of claim 2 , wherein the step of forming one or more protuberances on the outer surface of the ferrule comprises:creating, on the outer surface of the ferrule, a crater with at least one micro-protuberance on the side of the crater.4. The method according to claim 3 , wherein a depth of the crater is between 0.1 μm and 1000 μm and a height of the at least one micro-protuberance is between 0.02 μm and 100 μm.5. The method according to claim 3 , wherein creating the crater and the at least one micro-protuberance includes applying a laser beam to irradiate the outer surface of the ferrule claim 3 , wherein the laser beam has a wavelength ranging between 10 nm and 20 claim 3 ,000 nm and an average power delivered to the ferrule between 0.001 μJ/μmand 1000 μJ/μm claim 3 , wherein the average power is based ...

FIBER OPTIC CONNECTOR WITH FIELD INSTALLABLE OUTER CONNECTOR HOUSING

An optical connector includes a first sub-assembly that is factory-installed to a first end of an optical fiber and a second sub-assembly that is field-installed to the first end of the optical fiber. The optical fiber and first sub-assembly can be routed through a structure (e.g., a building) prior to installation of the second sub-assembly. The second sub-assembly interlocks with the first sub-assembly to inhibit relative axial movement therebetween. Example first sub-assemblies include a ferrule, a hub, and a strain-relief sleeve that mount to an optical fiber. Example second sub-assemblies include a mounting block; and an outer connector housing forming a plug portion. 1. (canceled)2. A connector arrangement comprising:an optical fiber having a polished end face at a first end;a ferrule arrangement holding the first end of the optical fiber, the ferrule arrangement defining a first spring stop;a rear housing defining a second spring stop, the rear housing being laterally mountable over the optical fiber;a spring disposed around the optical fiber, the spring extending along a longitudinal axis between a front and a rear, the spring having a spring force acting along the longitudinal axis, the front of the spring abutting the first spring stop of the ferrule arrangement, the rear of the spring abutting the second spring stop of the rear housing; anda front housing that mounts over the ferrule arrangement and the spring, the front housing engaging the rear housing to axially retain the front housing relative to the rear housing, wherein the optical fiber and the ferrule arrangement are axially movable within the front housing under the bias of the spring.3. The connector arrangement of claim 2 , wherein the front housing is axially mountable over the optical fiber and the ferrule arrangement.4. The connector arrangement of claim 2 , wherein the front housing defines an open rear sized to enable passage of the ferrule arrangement claim 2 , the spring claim 2 , and ...

METHODS FOR PROCESSING FERRULES AND/OR OPTICAL FIBERS

The present disclosure relates generally to methods for processing ferrules of fiber optic connectors such that the amount of polishing that is required is eliminated or at least reduced. In one example, an energy source is used to remove excess adhesive from the end face of the fiber and likely from an end face of the ferrule. 1. A method for processing an optical fiber and for securing the optical fiber to a ferrule , the ferrule including a ferrule body having a distal end and a proximal end , the ferrule body also defining a fiber opening that extends axially through the ferrule body from the proximal end to the distal end , the method comprising:(a) processing a distal end face of the optical fiber so as to form a pre-processed end face of the optical fiber;(b) applying adhesive within the fiber opening of the ferrule body;(c) inserting the optical fiber with the pre-processed end face through the adhesive filled opening of the ferrule body and positioning the optical fiber within the fiber opening such that the pre-processed end face of the optical fiber is located at a pre-determined axial position relative to the distal end of the ferrule body;(d) curing the adhesive to fix the optical fiber within the fiber opening such that the pre-processed end face of the optical fiber is fixed at the pre-determined axial position relative to the distal end of the ferrule body; and(e) removing excess adhesive from the pre-processed end face of the optical fiber using a non-contact energy source.2. The method of claim 1 , further comprising the step of:(a) polishing the pre-processed end face of the optical fiber after the adhesive has been removed.3. The method of claim 1 , wherein:(a) the step of processing the distal end face of the optical fiber includes a laser ablation process.4. The method of claim 1 , wherein:(a) the step of processing the distal end face of the optical fiber includes a plasma process.5. The method of claim 1 , wherein:(a) the optical fiber ...

OPTICAL FIBER CONNECTION SYSTEM

An optical fiber connection system includes a first and a second optical fiber, each with end portions that are terminated by a first and a second fiber optic connector, respectively. A fiber optic adapter connects the first and the second fiber optic connectors. A fiber alignment apparatus includes V-blocks and gel blocks. Each of the fiber optic connectors includes a connector housing and a sheath. The end portions of the optical fibers are positioned beyond distal ends of the respective connector housings. The sheath is slidably connected to the connector housing and slides between an extended configuration and a retracted configuration. The sheath covers the end portion of the respective optical fiber when the sheath is at the extended configuration and exposes the end portion when at the retracted configuration. The end portions of the optical fibers are cleaned when slid between the V-blocks and the gel blocks. 1. An optical fiber connection system comprising:a first optical fiber including an end portion with an end; a housing including a first port and a second port; and', 'a fiber alignment apparatus including a first V-block and a first gel block, the fiber alignment apparatus positioned between the first port and the second port;, 'a fiber optic adapter comprising a housing extending between a proximal end and a distal end, the first optical fiber extending through the housing and attached to the housing, the end portion of the first optical fiber positioned outside the housing beyond the distal end of the housing; and', 'a sheath slidably connected to the housing, the sheath slidable between an extended configuration and a retracted configuration, the sheath covering the end portion of the first optical fiber when the sheath is at the extended configuration, and the sheath exposing the end portion of the first optical fiber when the sheath is at the retracted configuration., 'a first fiber optic connector comprising2. The optical fiber connection system ...

Method for Polishing End Faces of Plastic Optical Fiber

A process for polishing the end face of a plastic optical fiber (POF) to produce a mirror smooth surface without any defect. Smooth POF end faces reduce the optical coupling loss when two plastic optical fibers are connected. The polishing process can be used to produce POF end faces which are recessed relative to the adjacent end face of a ferrule surrounding the fiber. When the ends of two ferrules are inserted in a connector designed to align the end faces of the ferrules while allowing those end faces to abut each other, the confronting recessed POF end faces will be separated by an air gap. 1. A method for polishing an end face of a plastic optical fiber that is surrounded by a ferrule made of metal or ceramic , comprising:(a) concurrently abrading an end face of the plastic optical fiber and an end face of the ferrule for a first time duration using a first abrasive film comprising abrasive particles having particle sizes in a first range having upper and lower bounds;(b) after the first time duration has expired, abrading the end faces for a second time duration using a second abrasive film comprising abrasive particles having particle sizes in a second range having upper and lower bounds, wherein the upper bound of the second range is less than the lower bound of the first range; and(c) after the second time duration has expired, abrading the end faces for a third time duration using a suspension comprising abrasive particles suspended in a liquid on a surface of a polishing pad, wherein the suspended abrasive particles have particle sizes in a third range having upper and lower bounds, wherein the upper bound of the first range is less than the lower bound of the second range.2. The method as recited in claim 1 , further comprising spreading the suspension over a surface of a polishing pad that is supported by a rotatable platen claim 1 , wherein the third range claim 1 , the third time duration claim 1 , a rotational speed of the rotatable platen claim 1 , ...

METHOD FOR MAKING OPTICAL FIBER CONNECTOR AND STRUCTURE THEREOF

A method for making an optical fiber connector includes the following steps: Providing a casting mold having at least one casting cavity, and arranging at least one optical fiber assembly in the at least one casting cavity; Feeding plastic material into the at least one casting cavity; Solidifying the plastic material so as to form a plastic portion which solidifiedly bonds the at least one optical fiber assembly, where an end of the at least one optical fiber assembly emerges from the plastic portion, then removing a lower mold plate of the casting mold; Using a hard grinding disk to grind the end of the at least one optical fiber assembly; and 1. A method for making an optical fiber connector , comprising the following steps:(A) Providing a casting mold having at least one casting cavity, and arranging at least one optical fiber assembly in the at least one casting cavity;(B) Feeding plastic material into the at least one casting cavity;(C) Solidifying the plastic material so as to form a plastic portion which solidifiedly bonds the at least one optical fiber assembly, where an end of the at least one optical fiber assembly emerges from the plastic portion, then removing a lower mold plate of the casting mold;(D) Using a hard grinding disk to grind the end of the at least one optical fiber assembly; and(E) Disposing the casting mold into an atomization facility, and atomizing lens material to the end of the at least one optical fiber assembly so as to form a lens on the end of the at least one optical fiber assembly such that the lens is heated and solidified.2. The method for making an optical fiber connector as claimed in claim 1 , wherein step (C) further includes grinding the end of the at least one optical fiber assembly with a soft grinding disk claim 1 , thereafter coating a layer of hydrophobic material on a surface of the plastic portion adjacent to the end of the at least one optical fiber assembly.3. The method for making an optical fiber connector as ...

METHODS AND SYSTEMS FOR POLISHING OPTICAL FIBERS

A method of polishing an optical fiber that extends through a ferrule involves: (a) determining a polishing depth by measuring the distance between an end of the optical fiber and an end face of the ferrule with an interferometer; (b) performing a polishing step based on the the polishing depth to remove material from the end of the optical fiber; and (c) repeating steps (a) and (b) until the end of the optical fiber is within a predetermined distance of the end face of the ferrule. Related systems for polishing an optical fiber that extends through a ferrule are also disclosed. 1. A method of polishing an optical fiber that extends through a ferrule , the method comprising:(a) determining a polishing depth by measuring the distance between an end of the optical fiber and an end face of the ferrule with an interferometer;(b) performing a polishing step based on the the polishing depth to remove material from the end of the optical fiber;(c) repeating steps (a) and (b) until the end of the optical fiber is within a predetermined distance of the end face of the ferrule.2. A method according to claim 1 , wherein the predetermined distance is about 100 nm.3. A method according to claim 1 , further comprising:determining a surface profile of the end of the optical fiber, wherein steps (a) and (b) are repeated until the surface profile of the end of the optical fiber varies in height by less than about 200 nm.4. A method according to claim 1 , wherein the end of the optical fiber extends at least about 10 μm beyond the end face of the ferrule prior to determining a polishing depth for the first time such that an initial polishing depth measured by the interferometer is at least about 10 nm.5. A method according to claim 1 , wherein steps (a) and (b) are repeated at least three times.6. A method according to claim 1 , wherein determining a polishing depth for at least the first time comprises:monitoring interference patterns with the interferometer at different relative ...

POLISHING SHEET EQUIPPED WITH NANO-SILICA POLISHING PARTICLES, AND POLISHING METHOD AND MANUFACTURING METHOD FOR OPTICAL FIBER CONNECTOR USING POLISHING SHEET

A polishing sheet capable of reducing recesses formed at the core of the end surface of an optical fiber, and a manufacturing method for an optical fiber connector using the polishing sheet are provided. The method includes a step of the final polishing of an optical fiber ferrule assembly in which an optical fiber protrudes from the end surface of a ferrule, the protruding optical fiber having a recess in the tip end core. During the final polishing step, the optical fiber having the recess in the core is inserted into a flocked portion of a flocked polishing sheet. The optical fiber ferrule assembly and the flocked polishing sheet are disposed opposite one another and moved relatively to each other in order to polish the optical fiber. Fibers constituting the flocked portion have silica particles with an average particle diameter from 0.01 μm to 0.1 μm adhered to the surface.

ALIGNING A FIBER IN AN OPTICAL FIBER CONNECTOR

According to certain embodiments, a method comprises disposing a first nanofiber portion of a nanofiber and a first assisting fiber portion of an assisting fiber into a ferrule of a connector. A second assisting fiber portion is heated. The nanofiber and assisting fiber are moved such that a portion of the heated assisting fiber portion is disposed within the ferrule. According to other embodiments, a method comprises placing a fiber within a ferrule of a connector having a fixed point such that a fiber center is a fiber distance away from a receptacle center. The fiber distance between the fiber center and receptacle center is measured. An angular offset between the fixed point and fiber center is measured about the receptacle center. A rotation angle for the fiber distance and angular offset is determined. The ferrule is rotated relative to the connector according to the rotation angle. 1. A method comprising:disposing a first nanofiber portion of a nanofiber and a first assisting fiber portion of an assisting fiber into an interior volume of a ferrule of a connector such that a second assisting fiber portion of the assisting fiber is external to the ferrule;heating at least the second assisting fiber portion to yield a heated assisting fiber portion; andmoving the nanofiber and the assisting fiber with respect to the ferrule such that at least a portion of the heated assisting fiber portion is disposed within the interior volume of the ferrule.2. The method of claim 1 , further comprising:bonding the nanofiber and the assisting fiber to the ferrule.3. The method of claim 1 , further comprising:polishing an edge of the nanofiber and an edge of the assisting fiber.4. The method of claim 1 , the heating at least the second assisting fiber portion further comprising:the heating at least the second assisting fiber portion to a temperature between 500 to 1000° F.5. A method comprising:placing a fiber within a ferrule of a connector such that a fiber center of the fiber ...

MANUFACTURE AND TESTING OF FIBER OPTIC CASSETTE

A double flexible optical circuit includes: a flexible substrate supporting a plurality of optical fibers; a first connector terminating the optical fibers at a first end of the double flexible optical circuit; and a second connector terminating the optical fibers at a second end of the double flexible optical circuit. Each of the optical fibers is positioned in one of a plurality of separate extensions formed by the flexible substrate as the optical fibers extend from the first connector to the second connector. The first and second connectors are configured to be tested when the first and second connectors are connected through the double flexible optical circuit. The double flexible optical circuit is configured to be divided in half once the testing is complete to form two separate flexible optical circuits. 1. A method for forming two separate flexible optical circuits , the method comprising:providing a double flexible optical circuit including a flexible substrate supporting a plurality of optical fibers, with a first connector terminating the optical fibers at a first end of the double flexible optical circuit, and a second connector terminating the optical fibers at a second end of the double flexible optical circuit, wherein each of the optical fibers is positioned in one of a plurality of separate extensions formed by the flexible substrate as the optical fibers extend from the first connector to the second connector;connecting the first and second connectors to equipment to test the double flexible optical circuit;testing the double flexible optical circuit; andafter testing, dividing the double flexible optical circuit in half to form the two separate flexible optical circuits.2. The method of claim 1 , wherein the double flexible optical circuit is a mirror image across a dividing line.3. The method of claim 1 , wherein the first and second connectors are MPO format connectors.4. The method of claim 1 , further comprising folding the double flexible ...

METHOD FOR MAKING OPTICAL FIBER CONNECTOR AND STRUCTURE THEREOF

A method for making an optical fiber connector includes the following steps: Providing a casting mold having at least one casting cavity, and arranging at least one optical fiber assembly in the at least one casting cavity; Feeding plastic material into the at least one casting cavity; Solidifying the plastic material so as to form a plastic portion which solidifiedly bonds the at least one optical fiber assembly, where an end of the at least one optical fiber assembly emerges from the plastic portion, then removing a lower mold plate of the casting mold; Using a hard grinding disk to grind the end of the at least one optical fiber assembly; and Disposing the casting mold into an atomization facility, and atomizing lens material to the end of the at least one optical fiber assembly, acting with a manner of epicyclic gearing revolving therearound and with their own axes, so as to form a lens on the end of the at least one optical fiber assembly such that the lens is heated and solidified. Thereby, efficacy in producing optical fiber connectors can be improved. Also disclosed is a structure of the optical fiber connector, thus reliability of automated production of optical fiber connectors can be increased. 1. An optical fiber connector , comprising:at least one plastic portion; andat least one optical fiber assembly, bonded with the at least one plastic portion, wherein the at least one optical fiber assembly includes a bare fiber, a protective layer, and at least one lens, the protective layer envelops the bare fiber, and the bare fiber emerges, at two ends, from the protective layer, respectively, and the bare fiber has its at least one end bonded with the at least one lens, such that the at least one optical :fiber assembly has its at least one end had at least one lens, and the at least one optical fiber assembly has its two ends emerged from the at least one plastic portion.2. The optical fiber connector as claimed in claim 1 , further comprising a positioning ...

HIGH EFFICIENCY OPTICAL COMBINER FOR MULTIPLE NON-COHERENT LIGHT SOURCES

An optical combiner that combines light from a plurality non-coherent light sources and directs it to a single output is described. The non-coherent light sources are arranged within a housing in a linear fashion, with light emitted from at least two of the non-coherent light sources directed towards a focusing lens by reflection from wavelength-selective mirrors, with the focus of the focusing lens directed to an input of an optical waveguide. Reflected light from at least one non-coherent light source passes through at least one wavelength-selective mirror that reflects light from a different non-coherent light source. A terminal non-coherent light source passes through all the wavelength-selective mirrors. Emitted light is transmitted or reflected along a plurality of optical axes that are parallel but offset to correct for refraction. 1. A device for combining light from different light sources , comprising:a focusing lens aligned to provide a focal point along a primary optical axis;a first non-coherent light source configured to emit a first wavelength, a second non-coherent light source configured to emit a second wavelength, and a third non-coherent light source configured to emit a third wavelength;a first dichroic mirror positioned relative to the first light source along a first axis and aligned along the primary optical axis, configured to at least partially reflect the first wavelength;a second dichroic mirror positioned relative to the second light source along a second axis and aligned along a secondary optical axis that is parallel to the primary optical axis, configured to at least partially reflect the second wavelength,wherein the third non-coherent light source is aligned along a tertiary optical axis that is parallel to the primary optical axis, such that the emitted second wavelength passes through the first dichroic mirror and the third wavelength passes through both the second dichroic mirror and the first dichroic mirror.2. The device of ...

Optical coupling device

An optical coupling device that exhibits high air tightness between a capillary and an optical fiber formed of the same glass material. An optical coupling device according to this disclosure includes: an optical fiber having an end portion being a bare fiber where a part of coating has been removed, metal plating being applied to the bare fiber around an end portion of the remaining coating and a circumference of the coating; a capillary having a through-hole having one end where the end portion of the bare fiber is positioned and the other end where the end portion of the coating of the optical fiber subjected to the metal plating is placed, metal plating being applied to an inner wall surface of the other end of the through-hole; and solder that seals a gap between the optical fiber 11 placed in the other end of the through-hole and an inner wall of the through-hole.

Method and apparatus for providing perfect alignment of optical fibers contained in connectors

An oversized connector providing an optical fiber bonded in a bore hole is machined about the center axis of the optical fiber to properly center the optical fiber in relation to the centerline of a receptacle for the connector containing another optical fiber whose central axis is also in line with the centerline of the receptacle.

Methods for polishing fiber optic connectors

Methods for controllably polishing fiber optic connectors that include a ferrule enclosing single or multiple optical fibers by manipulating the ingredients of the polishing composition to control the relative polishing rates of the ferrule material and the optical fiber material to obtain the desired connector end face surface finish and geometry.

Method of terminating optical fibres

ABSTRACT An optical fibre is terminated by securing the fibre with adhesive in a ferrule having a radially deformable end portion with a portion of the optical core from which the cladding has been removed protruding out from the end portion and press fitting a rigid alignment socket having a concentric bore in a transverse end wall onto the end portion of the ferrule with the core received in the bore so that the core is concentric with the periphery of the end portion. The exposed portion of the core is removed after the adhesive has set together with the alignment socket and the ferrule end portion press fitted into a suitable bush also receiving a similarly terminated fibre.

Optical connector assembly

Optical connector assemblies suitable for use in harsh environments such as down hole oil and gas well applications and methods for fabricating the same are provided. In one embodiment, an optical connector assembly suitable for down hole oil field applications comprises a first and second optical waveguide urged by a biasing member against a bracket. Each of the waveguides has at least one base surface formed on the exterior of the waveguide that is disposed against at least one of a plurality of reference surfaces of the bracket. In another embodiment, flats comprise two of the base surfaces on each optical waveguide. In another embodiment, a method of fabricating an optical connector assembly suitable for down hole oil field applications includes the steps of forming a first flat on a first optical waveguide, forming a second flat on the first optical waveguide, forming a first flat on a second optical waveguide, forming a second flat on the second optical waveguide, and biasing the first flats of the first and second optical waveguides against a first seating surface and second flats of the first and second optical waveguides against a second seating surface.

Spherical working device

본 발명은 광 파이버 커넥터 또는 유사한 긴 공작물의 단부를 볼록 형상으로 경면 폴리싱하기 위한 장치에 관한 것이다. The present invention is directed to an apparatus for mirror polishing convexly shaped ends of an optical fiber connector or similar long workpiece. 제1연마 숫돌은 공작물을 폴리싱하고 제2연마 숫돌은 제1연마 숫돌이 변형되었을 때 제1연마 숫돌의 공작면을 수정한다. 제1및 제2연마 숫돌의공작면들은 원형 또는 타원형 단면을 갖는 호형 오목면이 제1연마 숫돌의 공작면에 형성되도록 수직 방향 또는 경사 방향으로 주행한다. 제1연마 숫돌의 공작면에 항상 고처리능력이 마련되도록 여기에 전해 드레싱이 이루어진다. 제1연마 숫돌의 오목면이 변형되면, 제2연마 숫돌은 그 공작면으로 제1연마 숫돌의 오목면을 수정한다. The first grinding wheel polishes the workpiece and the second grinding wheel modifies the workpiece surface of the first grinding wheel when the first grinding wheel is deformed. The working surfaces of the first and second abrasive grindstones run in the vertical direction or the inclined direction such that an arcuate concave surface having a circular or elliptical cross section is formed on the workpiece surface of the first abrasive grindstone. The electrolytic dressing is made here so that a high throughput is always provided on the workpiece surface of the first grinding wheel. When the concave surface of the first grinding wheel is deformed, the second grinding wheel corrects the concave surface of the first grinding wheel with its work surface.

研磨膜

本发明的目的在于提供一种研磨膜，其具有高磨削力，且不易产生由研磨中的负重条件变动所致的光纤连接器的端面不良。本发明是一种研磨膜，其具有基材膜及层叠在所述基材膜的表面侧的研磨层，且所述研磨膜的特征在于：所述研磨层含有研磨粒子及其粘合剂，所述研磨层的由泰伯磨耗试验所致的磨耗量为10mg以上且25mg以下。所述研磨层中的所述研磨粒子的含量优选85质量％以上。所述研磨粒子可包含一次粒径为10nm以上且小于50nm的第一研磨粒子及一次粒径为50nm以上且小于250nm的第二研磨粒子。所述研磨层的平均厚度优选4μm以上且15μm以下。所述研磨粒子可为二氧化硅粒子。