Glasfaserstecker mit verbesserten Verbindungseigenschaften und mit Vorkehrungen zum Verhindern von optischen und mechanischen Unterbrechungen

Faseroptischer Stecker und Methode der Herstellung.

Thermoplastisch klebende Befestigung für einen optischen Faserverbinder

Endhülse für einen Glasfaserstecker und ihr Herstellungsverfahren

Steckerstift aus einer amorphen Legierung für optischen Steckverbinder und Herstellungsmethode

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. ...

Optical Module with Grooved Substrate

An optical module has a substrate 1 which can be made from silicon, on which a groove 3 is formed. A ferrule 5 which surrounds an optic fibre 6 is disposed in the groove 3 in order to optically couple to a laser diode 2 located on the substrate 1. The ferrule has a substantially-constant cross-section and can be of a cylindrical, elliptical or rectangular shape, made from zirconia, metal, borosilicate, glass or crystallised glass and can have at least one polished surface. The groove 3 can be a variety of shapes including V-shaped, hemispherical, elliptical or rectangular and may be provided with a slot at its base. A method of making the optical module is also disclosed which includes the use of anisotropic etching in order to form the groove 3.

Optical module having an optical coupling between an optical fiber and a laser diode

FIBRE-OPTIC LIGHT GUIDE

Optical fibres connector

A connector device for sheathed optical fibres 1, 3 comprises a double- inlet collar 5 provided with a central abutment formed with a through-bore 7 receiving a stone ring 8. Ferrules 9, 10 are applied by gluing to the optical fibre sheaths and the fibre ends project through bores in the ferrule ends to locate within the central bore of ring 8. The fibres are thus accurately aligned and they are urged to contact or the correct spacing, defined by ring 8, by a spring 13 within a tightenable nut 11. ...

VERBINDUNGSANORDNUNG FUER LICHTLEITKABEL

CONNECTING ARRANGEMENT FOR LIGHT GUIDANCE CABLES

MECHANISM TO THE LOESBAREN CLUTCH OF TWO OF LIGHT-CONDUCTING CONSTRUCTION UNITS WITH ONE ANOTHER.

Optical fiber array

MULTIFIBER OPTICAL CONNECTOR PLUG WITH LOW REFLECTION AND LOW INSERTION LOSS

AN OPTICAL FIBRE CONNECTOR

OPTICAL FIBER CONNECTOR

OPTICAL FIBRE ADAPTOR

COMPONENTS FOR JOINING OR TERMINATING OPTICAL FIBERS

The invention relates to components for joining or terminating optical fibers which are molded from a thermotropic liquid crystalline polymer having a linear coefficient of thermal expansion (LCTE) of from about -5 to 10 micrometer/meter-.degree.C, over a temperature range of from about -50.degree.C to about 85.degree.C, and preferably a linear coefficient of thermal expansion matching that of the optical fiber incorporated in the component.

OPTICAL FIBER CONNECTOR

An optical fiber connector includes two plug assemblies each including a cylindrically shaped plug extending from within a cap. An end of each cap is adapted to be secured to a coupling housing to cause the plug which extends from the cap to be received in a sleeve disposed in the housing. An optical fiber cable extends through a cable entrance end of the cap and has an end portion of its optical fiber terminated by the plug. An extender of the cap is secured thereto and extends along the cable a distance to a location where portions thereof are closely adjacent to the cable. Bending forces applied to the cable are transferred at the location to the extender and thence to the cap. This avoids the transfer of those forces to the plug which otherwise could cause the plug to turn pivotally about an interior lip of the cap and result in an optical disconnection of the plug from the other plug in the sleeve.

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.

INDEPENDENT OPTICAL FERRULE AND OPTICAL FIBER CONNECTOR WHICH USES THE FERRULE AND REPLACEABLE OPTICAL PLUG USING THE FERRULE

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 ...

METAL INSERT AND BUFFER RETENTION PLUNGER

A fiber optic termination for incorporating within a fiber optic connector is capable of mechanical assembly which can preclude the use of adhesives for termination assembly. A metal plunger (32) compresses a bullet (24) having an aperture (25) therethrough into a constriction (19) causing the bullet to grip a fiber (8). A metal insert (27) lines the interior of an alignment ferrule (1) and engages the actuating plunger (32) with an interference fit. The interference fit retains the plunger over time and over a broad operating temperature range. Grooves (28) of the metal insert create pockets of engagement between the insert (27) and the alignment ferrule (1) that resist axial displacement of the insert relative to the alignment ferrule.

TUNABLE OPTICAL FILTER

A tunable fiber Farby-Perot interferometer includes two aligned ferrule assemblies (22-22) having adjacent end faces separated by a gap. Each assembly includes a mirror (40) disposed transverse to a longitunal axis (28) of the assembly and embedded internally therein adjacent to the exposed end surfaces which defines the gap. Each ferrule assembly is held in a sleeve (74) disposed in an end fixture (70) with a piezoelectric transducer system (44) extending between end fixtures.Means (82-82) are provided in each end fixture for deforming slightly the sleeve to cause the ferrule assembly disposed therein to be moved into alignment with the other. The transducer system is operated to adjust the length of the gap between the exposed adjacent end faces. Also, the facilities including the transducer system are provided such that a portion or portions of it may be operated selectively to fine tune further the alignment between the fibers.

OPTICAL ELEMENT RETAINING MEMBER AND METHOD OF MANUFACTURINGSAME

In the optical element retaining member 10, a groove 13 of high precisi on can be formed, by a simple step, without conducting an etching operation or a precise working operation. A plurality of convex portion 12 made of ceramic, glass, silicon or the like are spliced on the substrate 11 made of ceramic, glass, silicon or the like, so as to retain the bare fiber 21 of the optical fiber in the groove between these convex portions 12.

Separable demountable connection for coupling optical fibres

OPTICAL FIBER END PIECE AND USE OF A PAIR OF END PIECES IN A PLUG CONNECTOR.

Multiple plug arrangement for optical fibres

Connector arrangement for coupling optical fibres

CENTRALIZER FOR A FIBER OPTIC CONNECTOR.

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. ...

Fibre-optic connector

The connector is composed of an outer tube (4) in which the two halves of the connector are housed, each comprising two parts (1, 2), the small part (1) of which, pierced with a minute hole (5), receiving the optical fibre (6) which is fitted into a longitudinal recess (3) of the large part (2). This connector ensures a 0.002 mm concentricity between the internal diameter of the small part (1) and the external diameter of the large part (2) with a 0.005 mm tolerance for both diameters. ...

INTO A PIN BUSHING INSERTABLE PIN FOR A FIBRE OPTICS.

Axially sprung pin type plug for light waveguide

A cylindrical plug pin is held axially spring-loaded, where a spring device stresses the plug pin in the plug body and the spring path is limited by a safety element on the plug body, where the plug pin can be pushed through by the spring device. A spacing element is arranged between the spring device and the plug pin, which during assembly can be slid laterally over the light waveguide. The spacing element is a longitudinally slit sleeve, which abuts the plug pinon one side and abuts the spring device on the other side. The spring device has a coil spring enclosed in a spring housing forming a stop in an axial direction. The spacing element is connected with the coil spring so that the stored load of thee spring works on the assembled plug pin in every possible relative position. The coil spring is tensed between the stops when the plug pin is disassembled.

PLUG FOR A FIBRE OPTICS.

Light conductor end piece for an optical fiber.

PROCEDURE FOR THE PRODUCTION OF A FIBER-OPTIC LIGHT CONDUCTOR, WHICH ARE HIGH TEMPERATURE STEADY IN ITS FRONT SURFACE RANGE, AND LIGHT CONDUCTOR, MANUFACTURED IN THE PROCEDURE.

Optical plug for push-pull connector

The optical plug has a plug housing (1) with ratchet elements (2) on its outside, cooperating with a locking sleeve (6) fitted over the plug housing and receiving a cable reception element (3) at one end. A projecting plug pin (4) is supported by a pin holder (5), acting axially against the cable reception element and joined to the latter via an integral coupling element (8), all 3 components made of plastics ...

PROCEDE ET DISPOSITIF DE TERMINAISON D'UN CABLE A UNE SEULE FIBRE D'UN SYSTEME DE COMMUNICATION A FIBRES OPTIQUES

La présente invention concerne des terminaisons de fibres optiques utilisées dans des systèmes de télécommunications. Le procédé de réalisation des terminaisons selon l'invention est caractérisé en ce qu'une fibre optique nue est introduite dans une bague déformable ayant des surfaces exactement coaxiales, et qui glisse le long de cette fibre avec un ajustement serré, lesdites bague et fibre étant ensuite poussées dans un organe ayant un trou exactement conique de manière à comprimer la bague sur la fibre en réalisant une fiche de diamètre très supérieur à celui de la fibre, tout en maintenant cette fibre coaxialement à l'intérieur de la fiche. Ces terminaisons sont destinées en particulier aux câbles de télécommunication à fibre optique unique.

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

DEVICE FOR JOINING OPTICAL FIBERS

Multi-core to single fibre optic connection for multi-element fibre optic cables

Composant pour le centrage de fibres(s) optique(s) comportant une férule (1) destinée à être traversée par la ou les fibres à centrer, ledit composant étant caractérisé en ce qu'il comporte en outre une pastille (2) calibrée qui est rapportée à une extrémité de la férule (1) et qui présente un trou de centrage (4) qui prolonge l'orifice(3) de la férule (1).

EMBOUT DE CONNECTEUR POUR FIBRES OPTIQUES MONOMODE A MAINTIEN DE POLARISATION ET SON PROCEDE DE REGLAGE.

L'INVENTION EST RELATIVE A UN EMBOUT DE CONNECTEUR POUR FIBRES OPTIQUES MONOMODE A MAINTIEN DE POLARISATION, COMPRENANT UN CORPS EXTERIEUR TUBULAIRE COMPORTANT A SON EXTREMITE AVANT UN EVIDEMENT PRESENTANT UNE PAROI DE PROFIL CONIQUE, UN ELEMENT CYLINDRIQUE INTERIEUR A L'INTERIEUR DUQUEL UNE FIBRE OPTIQUE PEUT ETRE IMMOBILISEE, EN PARTICULIER PAR COLLAGE, LEDIT ELEMENT INTERIEUR FAISANT SAILLIE DE LADITE EXTREMITE DU CORPS EXTERIEUR, LEDIT CORPS EXTERIEUR COMPORTANT DES TROUS RADIAUX POUR L'ENGAGEMENT D'ORGANES TELS QUE DES POINCONS, POUR CENTRER MECANIQUEMENT L'ELEMENT INTERIEUR DANS LE CORPS EXTERIEUR. IL COMPREND UNE DOUILLE18 MONTEE A ROTATION AUTOUR DUDIT CORPS1 ET DES MOYENS20 POUR IMMOBILISER LADITE DOUILLE DE PREFERENCE PAR COLLAGE, SUR LEDIT CORPS, LADITE DOUILLE ETANT EN OUTRE MUNIE D'UN REPERE D'INDEXATION19.

CONNECTOR FOR FIBEROPTICS, HAS MEMORY OF FORM

Connecteur pour fibres optiques, à mémoire de forme. Ce connecteur comprend au moins un moyen à mémoire de forme, comprenant un premier manchon (14) en matériau à mémoire de forme et un deuxième manchon (16) en matériau élastique. Les manchons sont coaxiaux et aptes à exercent des actions radiales l'un sur l'autre pour immobiliser ou libérer les extrémités (6, 8) des fibres. La différence Sm1xMm1-Sm2xMm2, où Sm1 et Sm2 représentent les sections transversales des manchons et Mm1 et Mm2 représentent leurs modules d'élasticité, est négative, lorsque le premier manchon se trouve dans sa phase martensitique, et positive lorsqu'il se trouve dans sa phase austénitique.

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 ...

Surgical stapler providing variable degree of staple closure

A magazine fed, trigger driven surgical stapler to close a surgical incision. The stapler has an anvil and a staple driving die, an adjustable stop for controlling movement of the staple driving die so that staples can be reformed to a range of closed positions. The anvil is pivotable under control of the staple driving die between a staple engaging position and position clear of the staples. A forcep assembly operable under actuation control of the staple driving die acts to draw the edges of the incision into close approximation. A staple blank with a concave back, upper arms extending the concave shape of the back and pointed lower arms extending downwardly and inwardly from the upper arms, which blank on reformation around the anvil will adopt a substantially hexagonal configuration.

Optical fiber crimp

In an optical fiber connector subassembly, a ferrule is received within a hollow cylindrical crimp. The ferrule has a bore extending through the ferrule with a longitudinal slot formed within the ferrule exposing a portion of the bore. The crimp is provided with first and second crimping portions. The first crimping portion extends into the slot and opposes the ferrule bore. The second crimping portion is diametrically opposed to the first crimping portion and opposes an exterior surface of the ferrule. Application of a force to the sides of the crimp causes the first and second crimping portions to be spaced apart a distance sufficient to insert a fiber within the ferrule bore. Release of the force causes the first and second crimping portions to be biased toward one another to securely crimp the fiber within the ferrule.

Alignment and assembly method

A first array of microlenses (16) on a lens substrate (15) is accurately aligned with a lens holder (20) by making a second array of microlenses (17) simultaneously with the first array. The second array of microlenses is arranged around the periphery of the lens substrate and is made solely for alignment purposes, rather than for focusing light. An array of detents (21, FIG. 2) is made in one surface of the lens holder such that, when the lens holder is abutted against the lens substrate, each microlens (17) of the second array can extend into one of the detents of the lens holder member, thereby to align the first array of microlenses with the lens holder member. The lens holder member has an opening (22) to permit light to be transmitted to or from the first array of microlenses (16). A pair of alignment pins (24) aligns the lens holder member with an array of optical fibers (12).

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.

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 ...

Ferrule for a light guide

A ferrule (20) for an optical waveguide has a composite metal sleeve (22) which has a first tubular section (28) and a coaxial second tubular section (30) axially spaced therefrom and with the second tubular section connected to the first via an intermediate section and to a molded first plastics part (24) around the free end of the first tubular section (28), and a second plastic part (26) axially spaced therefrom, which is formed around the ends adjacent to the intermediate section (32) of the two tubular sections and around the intermediate section (32). - Independent claims are included for the following: (A) An optical waveguide with associated ferrule.#(B) A method for installing a ferrule.

Tunable optical filter

Multi-ferrule structure

A multi-ferrule structure comprising a plurality of ferrule units(40: 40a, 40b, 40c, 40d) each for a single optical fiber. The ferrule units are disposed in contact with one or more adjacent units in such a way that the respective axes(O1, O2, O3, O4) of the ferrule units are in parallel with each other in one and the same plane(P). The ferrule units make one multi-ferrule set(42). The maximum deviation of the distance between optical axis of the optical fibers inserted in the respective ferrule units of the multi-ferrule set is very small. When a number of optical fibers are connected with the same number of other photoconductive components by using the multi-ferrule structure, the positioning accuracy for abutting connection is remarkably improved. In addition, the multi-ferrule structure is small in size and compact. ...

Ferrule with a transversely anisotropic optical fibre and its manufacturing method

CENTRALISER FOR AN OPTICAL-FIBRE CONNECTION

FASEROPTISCHER STECKER UND MONTAGEVERFAHREN

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

Fixing cylinder for optical fibre end with centring insert - made of brass with precise guide bore for fibre

The end of an optical fibre is centred within a fixing cylinder (1) via a soft brass insert (2) with the centre point milled in the end face of the brass insert. A boring tool is then used to obtain a blind bore in the brass insert using the milled centre point for alignment of the boring tool. This blind bore has the same dia. as that of the core (3)of the optical fibre. The insert then has a second bore formed by boring from the opposite side of the insert, so that the two bores are continuous, this second bore having the same dia. as the outer sheath of the optical fibre (4). The latter is then inserted in the second bore and glued in place, so that the stripped core (3) of the optical fibre projects into the first bore. Pref. the centre is milled in the end face of the brass insert via a pointed tool fitted in the centre of a cylindrical bore in a guide block with the same dia. as the fixing cylinder (1) which can be slid into it.

VORRICHTUNG ZUM VERBINDEN VON LICHTWELLENLEITERN UND VERFAHREN ZU DEREN HERSTELLUNG

OPTISCHE FASERVERBINDERBAUGRUPPE

OPTICAL FIBRE CONNECTORS

A tubular connector body (10) has one end (11) for receiving an optical fibre cable (1) having a plastics outer sleeve (3) protecting an optical fibre (2) and carries at the other end (12) connection means (20) for coupling to another similar connection body. A ferrule (30) is mounted within the other end (12) of the connector body (10) to support an exposed end portion (2a) of the optical fibre (2) within an irradiation settable adhesive material (40) injected into the ferrule (30). A deformable gripping member (50) is inserted into the one end (11) of the connector body (10) to grip an end portion (3a) of the plastics outer sleeve (3) of the cable upon deformation of the gripping member (50) by application of a force to the one end (11) of the tubular connector body (10).

OPTICAL FIBRE CONNECTORS

Optical fibre connector with wear resistant layer

An optical connector has a cylindrical glass ferrule 1 for housing an optical fibre 11 which is insertable into a sleeve and coated with a protective layer 3 on its outer surface which has a hardness greater than that of the sleeve. The protective layer 3 may be made from diamond or a ceramic, such as alumina, tungsten carbide, silicon carbide, boron carbide, titanium carbide, silicon nitride, boron nitride or titanium nitride, and have a thickness ranging from several submicrons to several microns. The protective layer 3 prevents the formation of scratches on the cylinder 2 during attachment and detachment with the sleeve and increases the strength of the ferrule 1.

OPTICAL FIBRE SPLICE

ACCESSORIES FOR OPTICAL CABLES

OPTICAL FIBER LINK BUILDING GROUP

MULTIFIBER OPTICAL CONNECTOR PLUG WITH LOW REFLECTION AND LOW INSERTION LOSS

PUSH-PULL OPTICAL FIBER CONNECTOR

Simultaneous thermal forming of ferrule and optical fiber in a ferrule assembly to thermally form an optical surface in the ferrule assembly, and related fiber optic components, fiber connectors, assemblies, and methods

Simultaneous thermal forming of a ferrule (14) and optical fiber (16) as part of a ferrule assembly (12) to thermally form an optical surface (18) in the ferrule assembly. Related fiber optic components, connectors, assemblies, and methods are disclosed. In certain embodiments, the ferrule assembly is comprised of a ferrule (14) and an optical fiber (16) having an end portion (22) extending from an end face (26) of the ferrule. The ferrule (14) may be made from a material or material composition having the same or similar thermal energy absorption characteristics as the optical fiber disposed in the ferrule. Thus, when the end face (26) of the ferrule and the end portion (22) of the optical fiber are simultaneously exposed to a wavelength(s) of a laser beam emitted by a laser, at least a portion of the end face of the ferrule and end portion of the optical fiber are both thermally formed together to form an optical surface.

PLASTIC OPTICAL FIBER CORD WITH FERRULE

FIBER OPTIC CONNECTOR FOR SINGLE FIBER

A connector and coupling assembly to couple a single pair of optical fibers provides for securing the respective fibers in identical metallic connector pins and inserting these pins in an alignment sleeve having a precision axial aperture which maintains proper alignment of the pins and the fibers carried thereby. The respective connector pins are carried by coupling members which resiliently hold the pins so as to allow alignment thereof by the alignment sleeve while the coupling members provide for axial clamping of the pins together in axial alignment.

OPTICAL FIBER CONNECTOR

OPTICAL FIBER CONNECTOR In an optical fiber connector having a snap lock latching arrangement, internal springs act between housings and fiber holding inserts to bias the fiber holding inserts axially together into an alignment sleeve and to bias the housings axially apart to a stop position at which latching formations on the housings abut axially together. The biasing arrangement inhibits relative axial movement of the inserts and housings which would result in variable insertion loss at the connection. Stop formations provided on one of the housings center the housings with respect to one another to facilitate disengagement of the snap lock engagement.

MICRO-OPTICAL BUILDING BLOCK SYSTEM AND METHOD OF MAKING SAME

MICRO-OPTICAL BUILDING BLOCK SYSTEM AND METHOD OF MAKING SAME A micro-optical building block system for optical processing of light signals and method for making the components used in the system. The basic system includes a master substrate on which is mounted at least one building block. Typically, there are a multiplicity of pre-defined positions at which the building blocks will mate with the master substrate. Building blocks can be positioned adjacent to each other on the master substrate in such a way as to allow light signals to be transferred between them. Mating relief patterns are formed on both the master substrate and the building block substrates, the relief pattern areas on the master substrate being adjacent and repetitive, or alternatively, different patterns. The mating relief patterns enable self alignment of the building blocks at predetermined positions on the master substrate. The relief pattern on the building blocks is adapted to be employed to embody a variety of ...

OPTICAL FIBRE CONNECTOR COMPRISING A SHAPE MEMORY MATERIAL

Connecteur pour fibres optiques, à mémoire de forme. Ce connecteur comprend au moins un moyen à mémoire de forme, comprenant un premier manchon (14) en matériau à mémoire de forme et un deuxième manchon (16) en matériau élastique. Les manchons sont coaxiaux et aptes à exercent des actions radiales l'un sur l'autre pour immobiliser ou libérer les extrémités (6, 8) des fibres. La différence SmlxMml-Sm2xMm2, où Sml et Sm2 représentent les sections transversales des manchons et Mml et Mm2 représentent leurs modules d'élasticité, est négative, lorsque le premier manchon se trouve dans sa phase martensitique, et positive lorsqu'il se trouve dans sa phase austénitique.

METHOD FOR PRODUCTION OF OPTICAL FIBER CONNECTORS

OPTICAL FIBER CONNECTOR HAVING ENHANCED PROVISIONS FOR INTERCONNECTION AND FOR PREVENTION OF OPTICAL AND MECHANICAL DISCONNECTION

An optical fiber connector which is assembled to a coupling housing by causing only relative linear motion between the connector and the housing and which also includes facilities for preventing optical disconnection from anotherconnector having a portion disposed in the housing includes a cap having two diametrically opposed slots each having an enlarged portion. A barrel is retained within the cap and has mounted thereto a ferrule in which is terminated an end portion of an optical fiber which is to be connected to another optical fiber. The connector is moved to cause the ferrule to enter a sleeve of a housing of a coupling and to cause locking pins of the housing to enter and to be moved along the slots of the cap until each pin is received in an enlarged portion of a slot. A cap extender is connected to an end of the cap and includes an annular detent. A shell which is disposed about and is slidably movable on the cap is moved to cause theannular detent projecting radially from the ...

MULTIFIBER OPTICAL CONNECTOR PLUG WITH LOW REFLECTION AND LOW INSERTION LOSS

PROCESS OF TERMINATION OF CABLES FORMS OF FIBEROPTICS

METHOD OF MAKING [...] WITH A SERIES OF PARALLEL-AXIS CYLINDRICAL CHANNELS [...] FROM THIS METHOD.

DISPOSITIF DE CONNEXION POUR FIBRES OPTIQUES

DISPOSITIF DE RACCORDEMENT POUR FIBRES OPTIQUES. IL COMPORTE UN MANCHON 5 A DOUBLE ENTREE, MUNIE D'UNE BUTEE CENTRALE 6 PERCEE D'UN CANON 7 DANS LEQUEL EST LOGEE UNE RONDELLE 8, DE PREFERENCE EN PIERRE, DONT LE DIAMETRE DE L'ORIFICE CENTRAL, CONCENTRIQUE AUDIT CANON, EST EGAL, AUX TOLERANCES PRES, A CELUI DES FIBRES OPTIQUES 1 ET 3 A RACCORDER. LES DEUX ENTREES DU MANCHON RECOIVENT UNE FERULE, TELLE QUE 9, RENDUE SOLIDAIRE DE LA GAINE 2 DE LA FIBRE OPTIQUE 1 ASSOCIEE. LA FERULE EST PERCEE D'UN CANON CONCENTRIQUE A L'ORIFICE DE LA RONDELLE 8 ET DE DIAMETRE EGAL, AUX TOLERANCES PRES, A CELUI DE LA FIBRE OPTIQUE.

DISPOSITIF DE MAINTIEN D'UNE FIBRE OPTIQUE

Dispositif de maintien et de positionnement de l'extrémité d'une fibre optique à revêtement ayant un indice de réfraction plus faible que celui du verre constitutif du corps ou âme de la fibre. Le maintien et le positionnement sont assurés par un anneau 13 entourant au contact le corps C en verre préalablement débarrassé du revêtement R Cet anneau est en un matériau optique à indice de réfraction plus faible que celui du corps C. Application : association de deux fibres optiques sans perte de lumière.

método de polimento a laser de uma fibra óptica conectorizada e uma fibra óptica conectorizada formada de acordo com o mesmo

SIMULTANEOUS THERMAL FORMING OF FERRULE AND OPTICAL FIBER IN A FERRULE ASSEMBLY TO THERMALLY FORM AN OPTICAL SURFACE IN THE FERRULE ASSEMBLY, AND RELATED FIBER OPTIC COMPONENTS, FIBER CONNECTORS, ASSEMBLIES, AND METHODS

Simultaneous thermal forming of a ferrule (14) and optical fiber (16) as part of a ferrule assembly (12) to thermally form an optical surface (18) in the ferrule assembly. Related fiber optic components, connectors, assemblies, and methods are disclosed. In certain embodiments, the ferrule assembly is comprised of a ferrule (14) and an optical fiber (16) having an end portion (22) extending from an end face (26) of the ferrule. The ferrule (14) may be made from a material or material composition having the same or similar thermal energy absorption characteristics as the optical fiber disposed in the ferrule. Thus, when the end face (26) of the ferrule and the end portion (22) of the optical fiber are simultaneously exposed to a wavelength(s) of a laser beam emitted by a laser, at least a portion of the end face of the ferrule and end portion of the optical fiber are both thermally formed together to form an optical surface.

OPTICAL FIBER CONNECTING FERRULE AND OPTICAL CONNECTOR USING SAME

A ferrule fitted around the end portions, which are to be joined to each other, of optical fibers, and formed so that a free end portion of the ferrule can be displaced resiliently to a great extent with respect to the fixed end portion thereof. Owing to this structure, the displacement of the axes of the optical fibers to be connected can be absorbed to minimize connection loss as well as the sliding force which occurs while connecting the fibers.

FERRULE FOR OPTICAL FIBER CONNECTORS

A ferrule for optical fiber connectors used for the maintenance of an optical communication network, which comprises crystallized glass having the composition of 60-70 wt.% of SiO2, 16-25 wt.% of Al2O3, 1.5-3 wt.% of Li2O, 0.5-2.5 wt.% MgO, 1.3-4.5 wt.% of TiO2, 0.5-3 wt.% of ZrO2, 2-6.5 wt.% of TiO2+ZrO2, 1-5.5 wt.% of K2O, 0-7 wt.% of ZnO and 0-3 wt.% of BaO. This crystallized glass is produced by depositing 'beta'-spodumene solid solution of an average grain size of not more than 2 'mu'm or 30-70 vol.% of 'beta'-quartz solid solution. This crystallized glass has a bend strength of not less than 200 MPa and a thermal expansion coefficient at -50 to 150 °C of -10~50mult.10-7/°C.

COUPLER FOR ARC FLASH DETECTION SYSTEMS

A system including ruggedized optic fiber cable assembly for use with an arc detection relay to protect electrical components from faults resulting in an arc flash. The cable assembly includes a pair of ruggedized ST connectors located at opposite ends of a ruggedized optical fiber cable. The cable includes an optical fiber core surrounded by a transparent gel layer and a transparent jacket surrounding the gel layer. Each ST connector includes a boot formed of a resilient material to provide shock absorption for the portion of the optical fiber cable extending through it. An accessory electronic cable is also provided, as are couplers, adapters for mounting the couplers onto walls, and sleeves with air pockets to enhance the ruggedness of the cable at points of stress, e.g., bends.

Optical fiber fixing element and method of manufacturing same

An optical fiber fixing element consists of a glass tube having an inner hole for receiving a clad portion of an optical fiber and which is formed at one end with a conical flared portion converging into the inner hole and a recess for receiving a cover portion of the optical fiber thereinto, both the flared portion and the recess being formed concentrically with the glass tube. A method of manufacturing such optical fiber fixing element is also provided which comprises forming an erosion resistant film on an outer surface, other than an end face, of a glass tube having an inner hole, treating the end face of the glass tube with a glass erosive solution to thereby form a flared portion, and grinding the flared portion to thereby form a recess in the flared portion.

Connector for optical fiber

The present invention relates to a connector for optical fiber used as optical communication parts, in particular to a ferrule which is one member of a plug side of the connector, a pointed end portion of the ferrule being partially cut off, and the optical fiber being inserted and fixed into the ferrule, the terminal treatment of the optical fiber is practiced by injuring the circumferential surface of the pointed end portion of the optical fiber and by cleaving the pointed end portion of the optical fiber.

Separable fiber optic cable connector

A separable connector is provided for optically joining one or more pairs of fiber optic cable terminals, each of which pairs is supported within a respective rigid alignment sleeve mounted within the connector in a resilient collar so that the alignment sleeves can be individually longitudinal withdrawn from the collar to allow cleaning of the cable faces; the terminal ends of each pair of cables being maintained in a closely spaced, single air-to-glass optical junction.

Ruggedized blind mating connector for optical fibers

A connector for optical fibers comprising a plug assembly and a first ferrule mounted coaxially therein, a receptacle assembly and a second ferrule mounted coaxially therein, wherein at least one of the plug-mounted ferrule and the receptacle-mounted ferrule is biased outwardly from a fiber-entry end of the ferrule. An alignment sleeve optically connects the ferrules and maintains the optical connection during translation of one of the plug assembly and the receptacle assembly in a longitudinal direction relative to the other.

OPTICAL CONNECTOR

An optical connector includes a pressing member fitted between two holders along a sleeve. The pressing member includes two pressing portions in contact with surfaces of flanges opposite to the sleeve. The pressing portions press the two holders toward the sleeve. The pressing member has a longitudinal opening with which the pressing member is fitted to cover a joint between the two holders along the sleeve, and has, between the two pressing portions, at least one first slit extending from a position opposite to the opening toward the opening, and at least one second slit separated longitudinally from the at least one first slit and extending from a position adjacent to the opening toward a position away from the opening. 1. An optical connector , comprising:two ferrules each having a first end, each ferrule having an optical fiber with a tip of the optical fiber inserted through the first end;two holders each having a flange, and each flange being located on an outer circumferential surface of a corresponding one of the two ferrules at the first end;a sleeve having tubular two ends through which second ends of the two ferrules are inserted into the sleeve, the sleeve causing end faces of the optical fibers to face each other and the second ends of the ferrules to abut against each other; anda pressing member fitted between the two holders along the sleeve, the pressing member including two pressing portions in contact with surfaces of the flanges opposite to the sleeve, the pressing portions pressing the two holders toward the sleeve,wherein the pressing member has a longitudinal opening with which the pressing member is fitted to cover a joint between the two holders along the sleeve, and has, between the two pressing portions, at least one first slit extending from a position opposite to the opening toward the opening, and at least one second slit separated longitudinally from the at least one first slit and extending from a position adjacent to the opening ...

Optical connector

Disclosed is an optical fiber connector useful for high density arrays. A rotating mechanism (23) is employed around the fiber ferrule (19) in combination with a spring (29) so as to engage one or more tabs (18) on the connector sleeve (10). The rotating mechanism includes a serpentine type groove configuration (25) which captures the tabs when the ferrule is pushed into the sleeve and releases the tabs when a longitudinal force is again applied to the ferrule.

OPTICAL FLOW CELL FOR USE IN SPECTRAL ANALYSIS

An optical flow cell (1) for use in spectral analysis comprises a housing (2) formed with intersecting first and second bores (4 and 3) forming between them a fluid cavity (5). The first and second bores (4 and 3) serve, respectively, for fluid throughflow and radiation transmission. The second bore (3) holds in a fluid tight fit and releasable fashion two radiation transmitting optical probes (6 and 7) having each an outer end portion and an inner end portion with an inner end face (13). The outer end portion of one probe (6) is linked to a radiation source and the outer end portion of another probe (7) is linked to a spectrometer, the inner end faces (13) of the probes facing the fluid cavity (5) and being spaced from each other. Each of the optical probes (6 and 7) is in the form of an optical fiber cable (10) having a ferrule (11) mounted on the inner end portion of the cable and firmly held in an associated radiation transmitting bore section.

Component for interconnection with a multicore fibre and process of fabrication

Multi-core to single fibre optic connection for multi-element fibre optic cables Four fibre optic cables (F1-F4) are free at one end, and fixed at the other end. The fixed end has the fibre optic centres (I1-I4) forming a precision square of 44 microns spacing. The outer optical sleeves (21-24) are tangential to each and have a common outer diameter of 106 microns. To effect connection, the fixed fibres are placed in a holding clamp of the same dimension as the outer sleeves, and the cables are cut to length. The cables are glued together, then the outers stripped off with Hydrofluoric acid to form the connections.

Dual inner diameter ferrule device with smooth internal contours and method

A fiber optic ferrule includes a body extending from a first end to a second opposite end, with the body including an axial passage extending between the first and the second ends. The axial passage includes a first diameter portion having a diameter of at least 125 microns, a second diameter portion having a diameter of at least 250 microns and less than a diameter of a buffer, and a smooth and continuous transition between the first and the second diameter portions. The second diameter portion is positioned between the first diameter portion and the second end. The axial passage further defines a tapered shape at the second end extending inward from the second end toward the second diameter portion. In certain embodiments, another smooth and continuous transition can be provided between the taper shape and the second diameter portion. In certain embodiments, the axial passage is smooth and continuous between the first and the second ends of the body. A hub holds the ferrule. A method of assembling a terminated fiber optic cable is also provided.

WAFER-LEVEL LENSES FOR FIBER OPTIC CONNECTORS AND METHODS FOR MAKING THE SAME

A method for forming lenses for a fiber optic connector includes forming a mask on a photosensitive glass, the mask defining a plurality of covered portions of the photosensitive glass and a plurality of open portions of the photosensitive glass that are positioned between the plurality of covered portions, exposing the photosensitive glass and the mask to electromagnetic energy, removing the mask from the photosensitive glass, forming wafer-level lenses at the plurality of covered portions of the photosensitive glass by exposing the photosensitive glass to thermal energy, and applying an anti-reflective coating to an upper surface of the photosensitive glass. 1. A method for forming lenses for a fiber optic connector , the method comprising:forming a mask on a photosensitive glass, the mask defining a plurality of covered portions of the photosensitive glass and a plurality of open portions of the photosensitive glass that are positioned between the plurality of covered portions;exposing the photosensitive glass and the mask to electromagnetic energy;removing the mask from the photosensitive glass;forming wafer-level lenses at the plurality of covered portions of the photosensitive glass by exposing the photosensitive glass to thermal energy; andapplying an anti-reflective coating to an upper surface of the photosensitive glass.2. The method of claim 1 , further comprising dicing the wafer-level lenses into a first plurality of lenses and a second plurality of lenses.3. The method of claim 1 , further comprising coupling a ferrule to a lower surface of the photosensitive glass opposite the upper surface claim 1 , the ferrule comprising a plurality of apertures corresponding to the wafer-level lenses.4. The method of claim 3 , further comprising inserting a plurality of optical fibers into the plurality of apertures of the ferrule claim 3 , and optically coupling the plurality of optical fibers to the wafer-level lenses.5. The method of claim 3 , wherein the ferrule ...

OPTICAL FIBER CONNECTOR AND ASSEMBLY METHOD THEREFOR

Disclosed are an optical fiber connector an assembly method therefor. The connector is used for matching with an optical fiber adapter, and comprises a connector casing, a ceramic ferrule (), a spring () and a boot (), wherein the connector casing has a lateral width of 2.5 mm to 4.5 mm, is formed by inserting and locking a front casing () and a rear casing () and forms a cavity; the tail of the connector casing is connected to the boot (), the external front end of the connector casing contains a guiding block () and a combined elastic arm successively in the rearward direction, and a retaining convex block () is arranged on the combined elastic arm; the tail end of the ceramic ferrule () is fixed to a tailstock () of the ceramic ferrule and penetrates through a through hole at the front end of the connector casing; and the spring is compressed between the tailstock () of the ceramic ferrule and a stop block () formed by the inner walls of the connector casing. The connector greatly reduces the overall dimensions of the connector, and increase the installation density of the connector. 124815810110423210645013. An optical fiber connector for matching with an optical fiber adapter , comprising a connector casing , a ceramic ferrule () , a spring () and a boot () , wherein , the connector casing has a lateral width of 2.5 mm to 4.5 mm and is formed by a front casing () and a rear casing () locked together , a cavity is formed within the connector casing , a tail portion of the connector casing is connected to the boot () , a guiding block () for preventing inversed insertion and a combined elastic arm are successively arranged on the external side of the connector casing from the front end to the rear end of the connector casing , and a retaining convex block () is arranged on the combined elastic arm; a tail end of the ceramic ferrule () is fixed to a ceramic ferrule tailstock () and the ceramic ferrule () projects out from a through hole () at the front end of the ...

FERRULE SYSTEM FOR FIBER OPTIC CONNECTORS

An optical waveguide ferrule includes a body and a low-expansion material on one end of the body. The body of the ferrule is formed from a first material and has a bore extending lengthwise therethrough. The bore is configured to receive an optical fiber along a central axis of the ferrule. The low-expansion is configured to be heated without damaging the body. 1. An optical waveguide ferrule , comprising:a body of the ferrule formed from a first material, the body having a bore extending lengthwise therethrough configured to receive an optical fiber along a central axis of the ferrule; anda low-expansion material on one end of the body, whereby the low-expansion material is configured to be heated without damaging the body.2. The optical waveguide ferrule of claim 1 , wherein the difference in the thermal expansion of the body of the ferrule and the low-expansion material on the one end of the body is greater than 30×10/° C.3. The optical waveguide ferrule of claim 2 , wherein the low-expansion material extends radially along the end of the ferrule more than 25 microns from the bore of the ferrule.4. The optical waveguide ferrule of claim 3 , wherein the low-expansion material extends radially along the end of the ferrule less than 250 microns from the bore of the ferrule.5. The optical waveguide ferrule of claim 3 , wherein the low-expansion material extends radially from the bore to less than 90% of the outermost radius of the ferrule.6. The optical waveguide ferrule of claim 5 , wherein the low-expansion material extends into the ferrule less than half the depth of the ferrule as measured along an axis defined as concentric with the bore.7. The optical waveguide ferrule of claim 2 , wherein the ferrule comprises zirconia.8. The optical waveguide ferrule of claim 7 , wherein the low-expansion material is a glass or glass ceramic.9. The optical waveguide ferrule of claim 8 , wherein the low-expansion material has a graded composition that transitions from a lower- ...

METHOD OF MAKING A LENSED CONNECTOR WITH PHOTOSENSITIVE GLASS

The present disclosure relates to a method of making a lensed connector in which a glass ferrule has holes within the body of the glass ferrule, and the glass ferrule is subsequently processed to form lens structures along the ferrule. 1. A method of making a lensed connector comprising:inserting a light occluding agent into at least one hole of a ferrule made of glass, wherein the at least one hole extends partially through the ferrule from a first surface;applying UV light onto the first surface of the ferrule such that the light occluding agent prevents a portion of the ferrule from being treated by the UV light, thereby forming an untreated portion of the ferrule;removing the light occluding agent from the ferrule; andthermally developing the ferrule such that the untreated portion of the ferrule forms a dome shaped lens structure protruding from a second surface of the ferrule, wherein the second surface is opposite the first surface.2. The method of claim 1 , further including:inserting an optical fiber into the at least one hole; andbonding the optical fiber to the lens structure within the at least one hole with an adhesive.3. The method of claim 1 , wherein the hole extends into between 25% and 80% of a thickness of the ferrule.4. The method of claim 1 , wherein the dome shaped lens structure has a sag height ranging between 4.5 μm and 13 μm.5. The method of claim 1 , wherein the UV light has a wavelength ranging between 300 nm and 340 nm.6. The method of claim 1 , wherein the glass ferrule comprises a photosensitive glass.7. The method of claim 6 , wherein during the thermally developing claim 6 , the untreated portion of the ferrule softens and the photosensitive glass of the ferrule surrounding the untreated portion shrinks in volume to squeeze the untreated portion and form the dome shaped lens structure.8. The method of claim 2 , wherein the hole is substantially circular in shape having a center and an outer surface with at least one protuberance ...

POLYARYLENE SULFIDE RESIN COMPOSITION AND USE OF SAME

Provided is a polyarylene sulfide resin composition which is good in strength, dimensional stability, and moldability in terms of a molded body thereof and is also capable of reducing wearing of a mold or molding machine at the time of molding of a molded body. The polyarylene sulfide resin composition contains 100 parts by mass of a polyarylene sulfide resin and 150 to 400 parts by mass of a glass bead, a sodium content of the polyarylene sulfide resin being 1,200 ppm or less, and the glass bead being surface-treated with a vinylsilane or an epoxysilane and having an average particle diameter of 30 μm or less and a ratio between a cumulative 10% particle diameter and a cumulative 90% particle diameter {(ltive 90% particle diameter)/(cumulative 10% particle diameter)} of 2.5 or more. 1. A polyarylene sulfide resin composition comprising 100 parts by mass of a polyarylene sulfide resin and 150 to 400 parts by mass of a glass bead ,a sodium content of the polyarylene sulfide resin being 1,200 ppm or less, andthe glass bead being surface-treated with a vinylsilane or an epoxysilane and having an average particle diameter of 30 μm or less and a ratio between a cumulative 10% particle diameter and a cumulative 90% particle diameter { (cumulative 90% particle diameter)/(cumulative 10% particle diameter) } of 2.5 or more.2. The polyarylene sulfide resin composition according to claim 1 , wherein the polyarylene sulfide resin is a linear type polyarylene sulfide resin.3. The polyarylene sulfide resin composition according to claim 1 , wherein the polyarylene sulfide resin composition is for optical communication components.4. The polyarylene sulfide resin composition according to claim 1 , wherein the polyarylene sulfide resin composition is for MT ferrules.5. A positioning tool prepared by molding the polyarylene sulfide resin composition according to .6. An optical communication component prepared by molding the polyarylene sulfide resin composition according to .7. An MT ...

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 FERRULES

An optical ferrule adapted to receive and transmit light is described. The optical ferrule includes first and second alignment features for mating with corresponding alignment features of a mating optical ferrule. One of the first and second alignment features may be compressible or expandable. 1. An optical ferrule comprising:a first feature having a size and a shape; anda second feature defining an expandable opening, the expandable opening having an unexpanded state and an expanded state, such that inserting an object having the size and the shape of the first feature into the expandable opening expands the opening from the unexpanded state to the expanded state, the optical ferrule adapted to receive and transmit light, wherein the optical ferrule is hermaphroditic.2. The optical ferrule of claim 1 , wherein the first and second features are alignment features for engaging corresponding alignment features of a mating optical ferrule.3. The optical ferrule of claim 2 , wherein the second feature comprises a first compliant feature and a second compliant feature claim 2 , and wherein the first compliant feature comprises a first flexible arm having a first fixed end attached to a first side of the expandable opening and an opposite first free end claim 2 , and the second compliant feature comprises a second flexible arm having a second fixed end attached to a second side of the expandable opening claim 2 , opposite the first side claim 2 , and an opposite second free end claim 2 , such that when the expandable opening is in the unexpanded state claim 2 , the first and second free ends are separated by a first distance and when the expandable opening is in the expanded state claim 2 , the first and second free ends are separated by a second distance greater than the first distance.4. An optical ferrule comprising:a first feature defining an opening, the opening having a size and a shape; anda compressible second feature having an uncompressed state and a compressed ...

METHODS OF FORMING GLASS-BASED FERRULES AND GLASS-BASED COUPLING APPARATUS

Methods of forming glass-based ferrules and glass-based coupling apparatus for use in forming optical interface devices for photonic systems are disclosed and include forming glass or polymer alignment members that each includes an alignment feature. Methods of forming the alignment members are also disclosed, and include glass drawing and molding processes. The alignment members can be attached in a spaced apart configuration to the surface of a glass support substrate to form a ferrule. The alignment members can also be attached to the surface of a photonic integrated circuit to form a coupling apparatus. The alignment members can be made in a way that allows for same alignment members to be used to form either the ferrules or the coupling apparatus. 1. A method of forming a ferrule or a coupling apparatus , comprising:drawing a glass preform to form a drawn glass preform section with a size reduction, wherein the glass preform has a first longitudinal alignment feature;dividing the drawn glass preform section into at least first and second alignment members, with each alignment member having a length L that is in the range from 2 millimeters to 20 millimeters; andattaching the first and second alignment members in a spaced apart configuration to an upper surface of either: i) a glass support substrate to form the ferrule or ii) a photonic integrated circuit (PIC) to form the coupling apparatus.2. The method according to claim 1 , wherein the act of attaching the alignment members to the either the support substrate or the PIC is performed using either an adhesive or a thin absorbing film or a thin film of low melting glass or a glass frit or a direct glass bonding process.3. The method according to claim 1 , wherein the act of dividing the drawn glass preform section is performed using one or more of a laser beam claim 1 , a saw or mechanically scoring and cleaving.4. The method according to claim 1 , wherein the act of dividing the drawn glass preform section ...

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. 1. An optical connector comprising a ferrule , a waveguide , and an inorganic adhesive composition , wherein:the ferrule comprises a fiber-receiving passage defining an inner surface;the inorganic adhesive composition is disposed within the ferrule and in contact with the inner surface of the ferrule and the waveguide; andthe inorganic adhesive composition comprises at least about 50% by weight of metal oxide.2. The optical connector of claim 1 , wherein the inorganic adhesive composition comprises zirconia.3. The optical connector of claim 1 , wherein the inorganic adhesive composition comprises yttria-stabilized zirconia.4. The optical connector of claim 1 , wherein the ferrule is a ceramic material.5. The optical connector of claim 1 , wherein the inorganic adhesive composition is substantially the same material as the ferrule.6. The optical connector of claim 1 , wherein:the inorganic adhesive composition comprises zirconia or yttria-stabilized zirconia; andthe ferrule comprises zirconia or yttria-stabilized zirconia.7. The optical connector of claim 1 , wherein the inorganic adhesive composition further comprises one or more nanostructures of graphene claim 1 , carbon claim 1 , silver claim 1 , gold claim 1 , platinum claim 1 , or combinations thereof.8. The optical connector of claim 1 , wherein the inorganic adhesive composition comprises at least about 50% zirconia or at least about 50% yttria-stabilized zirconia.9. The optical connector of claim 1 , wherein the inorganic adhesive composition ...

Optical connector and optical connection structure

An optical connector includes an optical fiber including a glass fiber and a resin coating surrounding the glass fiber; a ferrule having a flange outside the ferrule and holding, inside the ferrule, a portion of the glass fiber exposed from the resin coating at an end of the optical fiber; a plug frame accommodating the ferrule; and an elastic member abutting the flange and biasing the ferrule forward in an optical axis direction of the optical fiber to retain the ferrule inside the plug frame. The flange and the plug frame have a protrusion and a recess that allow the flange and the plug frame to be fitted to each other at the predetermined position. When the ferrule is moved rearward in the optical axis direction, the protrusion and the recess are released from each other to bring the ferrule into a floating state relative to the plug frame.

Optical connector and optical connection structure

An optical connector includes an optical fiber, a ferrule holding the optical fiber, and a plug frame accommodating the ferrule. The optical fiber includes a glass fiber and a resin coating surrounding the glass fiber. The ferrule has a through-hole inside the ferrule and a flange outside the ferrule. The flange has a quadrangular cross-section perpendicular to the through-hole. The ferrule holds the glass fiber in the through-hole. The plug frame has a quadrangular tubular cross-section perpendicular to the through-hole. In one aspect, the flange has first and second faces opposing each other with the through-hole there between and third and fourth faces opposing each other with the through-hole there between and orthogonal to the first and second faces. The plug frame has two alignment parts capable of supporting the first and second faces, and there are clearances between the plug frame and the third and fourth faces.

PROCESS FOR MAKING MULTI-FIBER, PHYSICAL CONTACT FIBER FERRULE ASSEMBLIES

A method of manufacturing a fiber ferrule assembly that includes inserting an exposed end portion of a plurality of optical fibers including a core and a cladding into an array of insertion holes disposed in a glass ferrule plate. The glass ferrule plate includes a glass material that differs from a glass material of both the core and the cladding. The method further includes chemically etching the glass ferrule plate and the exposed end portion of the plurality of optical fibers using a chemical etchant for an etching time period. The glass ferrule plate etches at a first etching rate, the exposed end portion etches at a second etching rate, and the first etching rate is faster than the second etching rate such that, after the etching time period, the exposed end portion of each of the plurality of optical fibers protrude from a second surface of the glass ferrule plate. 1. A method of manufacturing a fiber ferrule assembly , the method comprising: the exposed end portion of the plurality of optical fibers comprises a core and a cladding surrounding the core; and', 'the glass ferrule plate comprises a glass material that differs from a glass material of both the core and the cladding; and, 'inserting an exposed end portion of a plurality of optical fibers from a first surface of a glass ferrule plate into an array of insertion holes disposed in the glass ferrule plate, wherein the glass ferrule plate is etched at a first etching rate;', 'the exposed end portion is etched at a second etching rate; and', 'the first etching rate is faster than the second etching rate such that, after the etching time period, the exposed end portion of each of the plurality of optical fibers protrude from a second surface of the glass ferrule plate opposite the first surface., 'chemically etching the glass ferrule plate and the exposed end portion of the plurality of optical fibers using a chemical etchant for an etching time period, wherein2. The method of claim 1 , further comprising ...

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 Connector and Optical Connection Structure

An optical connector includes a ferrule, an optical fiber, a tube, and a holding component. The ferrule includes a guide hole. The ferrule is formed from either crystallized glass, borosilicate glass, or quartz glass. The optical fiber includes an optical fiber body and a cover that covers the optical fiber body. The tube is disposed on the fiber extension side of one end of the guide hole and houses the optical fiber extending out from the fiber extension side. The tube is formed from either glass or polyimide resin. 18.-. (canceled)9. An optical connector , comprising:a ferrule including a guide hole;an optical fiber including an optical fiber body and a cover, the cover covering a first portion of the optical fiber body, a second portion of the optical fiber body being housed in the guide hole;a tube disposed on a fiber extension side at one end of the guide hole, the tube being configured to house the first portion of the optical fiber, the first portion of the optical fiber extending out from the fiber extension side;a holding component including a first housing portion configured to house the ferrule and a second housing portion where the tube ends, the holding component being configured to hold the ferrule and the tube such that the ferrule and the tube are joined together; andan adhesive filling a space between the guide hole and the optical fiber body, a space between the second housing portion and the tube, and a space between the tube and the optical fiber, whereinthe ferrule comprises crystallized glass, borosilicate glass, or quartz glass;the tube comprises glass or polyimide resin; andthe adhesive with which the space between the tube and the optical fiber is filled is disposed such that the adhesive does not spew out from a first end of the tube on a side where the optical fiber extends out.10. The optical connector according to claim 9 , whereinthe tube houses the second portion of the optical fiber body.11. The optical connector according to claim ...

Ferrule optical connectors with a displaced core for bonding optical fibers

Aspects and techniques of the present disclosure relates to an improved process for easily securing an optical fiber within a ferrule of a fiber optic connector which negates the use of epoxies or adhesives. The present disclosure further relates to a method for anchoring an optical fiber in a connector of the kind described, where a solvent agent is used rather than epoxies or adhesives.

CABLE AND DUAL INNER DIAMETER FERRULE DEVICE WITH SMOOTH INTERNAL CONTOURS AND METHOD

A fiber optic ferrule includes a body extending from a first end to a second opposite end, with the body including an axial passage extending between the first and the second ends. The axial passage includes a first diameter portion having a diameter of at least 125 microns, a second diameter portion having a diameter of at least 250 microns and less than a diameter of a buffer, and a smooth and continuous transition between the first and the second diameter portions. The second diameter portion is positioned between the first diameter portion and the second end. The axial passage further defines a tapered shape at the second end extending inward from the second end toward the second diameter portion. In certain embodiments, another smooth and continuous transition can be provided between the taper shape and the second diameter portion. In certain embodiments, the axial passage is smooth and continuous between the first and the second ends of the body. A hub holds the ferrule. A method of assembling a terminated fiber optic cable is also provided. 114-. (canceled)15. A fiber optic ferrule and cable comprising: a first diameter portion generally cylindrical in shape adjacent the first end of the ferrule body;', 'a second diameter portion generally cylindrical in shape positioned between the first diameter portion and the second end of the ferrule body; and', 'a transition area extending between and adjoining the first diameter portion and the second diameter portion;, 'a ferrule body extending from a first end to an opposite second end, the ferrule body having an outer cylindrical shape, the ferrule body including an axial passage extending along an axis between the first end and the second end of the ferrule body, the axial passage includingan optical fiber cable including an inner fiber, an outer coating, and a buffer layer, the outer coating positioned around the inner fiber and the buffer layer positioned around the outer coating, a portion of the outer coating ...

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. ...

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 , ...

OPTICAL FIBER AND COMPOSITE INORGANIC FERRULE ASSEMBLIES

A pre-terminated optical fiber assembly with a ferrule having front and rear opposed faces and at least one fiber bore defined longitudinally therethrough includes a glass optical fiber is disposed within the at least one fiber bore with the fiber fused to the ferrule at a location at least 1 mm deep inside the bore. A method for fusing is also disclosed. The ferrule is desirably composed of an inorganic composite material, the composite comprising a material gradient from at least 75% by volume of a first inorganic material to at least 75% by volume of second inorganic material in the radially inward direction, where the first inorganic material has a fracture toughness of at least 1 MPa·m, and the second inorganic material has a softening point of no greater than 1000° C., desirably no greater than 900° C. 1. An optical fiber assembly , comprising:a ferrule having front and rear opposed faces and at least one fiber bore defined longitudinally therethrough; anda glass optical fiber disposed within the at least one fiber bore of the ferrule;wherein the fiber is fused to the ferrule at a location at least 1 mm deep inside the at least one fiber bore, and{'sup': '1/2', 'wherein the ferrule is composed of an inorganic composite material, the composite comprising a material gradient from at least 75% by volume of a first inorganic material to at least 75% by volume of second inorganic material in the radially inward direction, the first inorganic material having a fracture toughness of at least 1 MPa·m, the second inorganic material having a softening point of no greater than 1000° C.'}2. The assembly according to claim 1 , wherein the material gradient of the ferrule comprises a region of the ferrule extending along at least 1/10 of the length of the radius of the ferrule.3. The assembly according to claim 1 , wherein the material gradient of the ferrule comprises a region of the ferrule extending along at least ⅓ of the length of the radius of the ferrule.4. The ...

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 ...

CABLE AND DUAL INNER DIAMETER FERRULE DEVICE WITH SMOOTH INTERNAL CONTOURS AND METHOD

A fiber optic ferrule includes a body extending from a first end to a second opposite end, with the body including an axial passage extending between the first and the second ends. The axial passage includes a first diameter portion having a diameter of at least 125 microns, a second diameter portion having a diameter of at least 250 microns and less than a diameter of a buffer, and a smooth and continuous transition between the first and the second diameter portions. The second diameter portion is positioned between the first diameter portion and the second end. The axial passage further defines a tapered shape at the second end extending inward from the second end toward the second diameter portion. In certain embodiments, another smooth and continuous transition can be provided between the taper shape and the second diameter portion. In certain embodiments, the axial passage is smooth and continuous between the first and the second ends of the body. A hub holds the ferrule. A method of assembling a terminated fiber optic cable is also provided. 1. A fiber optic ferrule and cable comprising: a first diameter portion generally cylindrical in shape adjacent the first end of the ferrule body;', 'a second diameter portion generally cylindrical in shape positioned between the first diameter portion and the second end of the ferrule body; and', 'a smooth and continuous transition area extending between and adjoining the first and the second diameter portions;, 'a ferrule body extending from a first end to an opposite second end, the ferrule body having an outer cylindrical shape, the ferrule body including a smooth and continuous axial passage extending between the first and the second ends of the ferrule body, the smooth and continuous axial passage of the ferrule body includingan optical fiber cable including an inner fiber, an outer coating, and a buffer layer, the outer coating positioned around the inner fiber and the buffer layer positioned around the outer ...

OPTICAL CONNECTOR AND OPTICAL CONNECTION STRUCTURE

An optical connector that requires fewer components and also has a simpler structure includes an optical fiber including a glass fiber and a resin coating surrounding the glass fiber; a ferrule having a flange outside the ferrule and a through-hole inside the ferrule, the ferrule holding, in the through-hole, a portion of the glass fiber exposed from the resin coating at an end of the optical fiber; a plug frame accommodating the ferrule; and an elastic member abutting the flange and biasing the ferrule. The flange has a flat surface on an outer periphery thereof, and the plug frame has a guide surface configured to unrotatably align the ferrule biased by the elastic member in contact with the flat surface of the flange. When the ferrule is moved in the direction opposite to the biasing direction, the flat surface is separated from the guide surface to bring the ferrule into a floating state relative to the plug frame. 1. An optical connector comprising:an optical fiber including a glass fiber and a resin coating surrounding the glass fiber;a ferrule having a flange outside the ferrule and a through-hole inside the ferrule, the ferrule holding, in the through-hole, a portion of the glass fiber exposed from the resin coating at an end of the optical fiber;a plug frame accommodating the ferrule; andan elastic member abutting the flange and biasing the ferrule forward in a direction of an axis of the through-hole,wherein the flange has a flat surface on an outer periphery thereof, and the plug frame has a guide surface configured to unrotatably align the ferrule biased by the elastic member at a predetermined position in contact with the flat surface of the flange, andwhen the ferrule is moved rearward in the direction of the axis of the through-hole relative to the predetermined position, the flat surface is separated from the guide surface to bring the ferrule into a floating state relative to the plug frame.2. The optical connector according to claim 1 , whereinthe ...

PUSH-PULL TYPE FIBER OPTIC CONNECTOR ASSEMBLY

A push-pull type fiber optic connector assembly includes a fiber optic connector connectable to fiber optic adapter and including connector housing, latch having elastic arm extended from top of connector housing for locking connector housing to fiber optic adapter, recessed portion located at bottom side relative to latch, pressure rod extended from recessed portion, fiber ferrule mounted in cable passage inside connector housing, connector sub assembly mounted in connector housing to hold fiber ferrule and fiber optic cable having fiber core inserted through fiber ferrule, and operating handle including sliding cap movably capped on connector housing, push member having push arm forwardly extended from sliding cap, cam located at one side of push arm and inserted into recessed portion of fiber optic connector, and handle shaft extended from sliding cap to pull sliding cap backwards in forcing down wedge-shaped pressure rod for disengaging fiber optic connector from fiber optic adapter. 1. A push-pull type fiber optic connector assembly , comprising:a fiber optic connector comprising a connector housing insertable into a connector chamber in a fiber optic adapter and a latch suspending at a top side of said connector housing, said latch comprising an elastic arm, two coupling blocks respectively protruded from two opposite lateral sides of said elastic arm for engagement with respective stop walls in said connector chamber of said fiber optic adapter, a recessed portion located at a rear side of said top guide surface, a wedge-shaped pressure rod backwardly extended from said recessed portion and suspending above the elevation of said coupling blocks, a cable passage extending through opposing front and rear ends of said connector housing, a fiber ferrule accommodated in said cable passage, a connector sub assembly mounted in said connector housing to hold said fiber ferrule in said cable passage and a fiber optic cable, said fiber optic cable comprising a fiber ...

Expanded Beam Multicore Fiber Connector

An expanded beam multicore fiber connector has a collimating lens attached to the end of an input multicore fiber, converting its spatially multiplexed array of micron-scale beams into an angularly multiplexed array of beams. The mating point of the connector is disposed past the input collimating lens to a point where these angularly multiplexed beams have substantial spatial overlap. The expanded beam multicore fiber connector may also have a key to aid in angular alignment. An output expanded beam multicore fiber connector mated to the first has a lens that focuses the angularly multiplexed beams onto the output multicore fiber. There is a gap between the lenses in the output and input expanded beam multicore fiber connector due to the extension of the mating point beyond the past the lens. The gap is configured to provide a substantially telecentric imaging system. 1. Apparatus for connecting an input multicore fiber having an input-fiber endface to an output multicore fiber having an output-fiber endface where the input-fiber endface and the output-fiber endface are arranged on an optical axis , the apparatus comprising:an output connector side including an output-fiber optical element and an output-fiber ferrule having an output-fiber ferrule mating surface, and configured to attach to the output-fiber endface;an input connector side including an input-fiber optical element and an input-fiber ferrule having an input-fiber mating surface, and configured to attach to the input-fiber endface;wherein the mating surfaces are configured to connect such that the optical elements are arranged along the optical axis; andwherein the optical elements are constructed and arranged to provide telecentric imaging from the input-fiber endface to the output-fiber endface.2. The apparatus of wherein the output-fiber optical element is configured to columnize beams from the input fiber cores claim 1 , forming expanded beams claim 1 , and wherein the input-fiber optical element ...

Cable and dual inner diameter ferrule device with smooth internal contours and method

A fiber optic ferrule includes a body extending from a first end to a second opposite end, with the body including an axial passage extending between the first and the second ends. The axial passage includes a first diameter portion having a diameter of at least 125 microns, a second diameter portion having a diameter of at least 250 microns and less than a diameter of a buffer, and a smooth and continuous transition between the first and the second diameter portions. The second diameter portion is positioned between the first diameter portion and the second end. The axial passage further defines a tapered shape at the second end extending inward from the second end toward the second diameter portion. In certain embodiments, another smooth and continuous transition can be provided between the taper shape and the second diameter portion. In certain embodiments, the axial passage is smooth and continuous between the first and the second ends of the body. A hub holds the ferrule. A method of assembling a terminated fiber optic cable is also provided.

OPTICAL ELEMENT AND OPTICAL CONNECTOR

An optical element connects to a ferrule that holds a plurality of optical fibers. The optical element includes: a plurality of lenses; and a cutout that engages with a projection part of the ferrule. The lenses are positioned relative to the optical fibers held in the ferrule by an engagement of the projection part and the cutout. 1. An optical element that connects to a ferrule that holds a plurality of optical fibers , comprising:a plurality of lenses; anda cutout that engages with a projection part of the ferrule,wherein the lenses are positioned relative to the optical fibers held in the ferrule by an engagement of the projection part and the cutout.2. The optical element according to claim 1 , wherein the cutout has a width that becomes narrower from an open end to a back side of the cutout.3. The optical element according to claim 2 , wherein the cutout has a U shape claim 2 , when viewed in an optical axis direction of the lenses.4. The optical element according to claim 2 , wherein the cutout has a semicircular shape claim 2 , when viewed in an optical axis direction of the lenses.5. The optical element according to claim 1 , whereinthe projection part of the ferrule is composed of two round shafts extending in parallel,the cutout has two straight lines extending in a crossing direction when viewed in an axis direction of the round shaft,in a fabricated state of the optical element to the ferrule, the two straight lines abut on circumferences of the round shaft, and extended lines of the two straight lines cross at a position located on a line segment that connects centers of the two round shafts.6. The optical element according to claim 5 , wherein the two straight lines form an open angle of 60°±20°.7. The optical element according to claim 5 , wherein the cutout has a V shape claim 5 , when viewed in an optical axis direction of the lenses.8. The optical element according to claim 1 , further including an abut part that abuts the ferrule.9. The optical ...

OPTICAL COUPLING DEVICE WITH WAVEGUIDE ASSISTED REGISTRATION

A multi-piece optical coupling device comprises a first piece that includes one or more first receiving elements configured to receive and secure one or more optical waveguides. The first piece further includes one or more light affecting elements configured to affect one or more characteristics of light from the optical waveguides while propagating the light within the optical coupling device. A second piece is separate from the first piece and includes one or more second receiving elements configured to receive the waveguides, the first receiving elements and the second receiving elements configured to align the second piece and the first piece using the optical waveguides. The second piece also includes one or more mating alignment features configured to engage with a mating optical coupling device and to align the optical coupling device with the mating optical coupling device. 1. An optical coupling device comprising a first piece comprising one or more first receiving elements and one or more first mating alignment features , and a second piece configured to be removably assembled to the first piece and comprising one or more second receiving elements and one or more second mating alignment features , the one or more first and second receiving elements configured to align the first and second pieces relative to each other by receiving and securing one or more optical waveguides therebetween , such that when the first and second pieces are assembled to each other and the optical coupling device mates with a mating optical coupling device , the one or more first mating alignment features of the first piece engage with the mating optical coupling device first and the one or more second mating alignment features of the second piece engage with the mating optical coupling device second.2. The optical coupling device of claim 1 , wherein the first piece is a first unitary molded piece and the second piece is a second unitary molded piece.3. The optical coupling ...

OPTICAL CONNECTION COMPONENT AND OPTICAL COUPLING STRUCTURE

An optical connection component includes a holding member that includes a front end surface, a rear end surface opposite to the front end surface, a reference surface, a pair of first guide holes provided on the front end surface, and a pair of second guide holes provided on the rear end surface; and an optical waveguide member that includes a front surface, a rear surface opposite to the front surface, a lower surface, and a plurality of optical waveguides extending from the front surface to the rear surface. Arrangement of first ends of the plurality of optical waveguides on the front surface and arrangement of second ends of the plurality of optical waveguides on the rear surface are different from each other. The optical waveguide member is held by the holding member such that the lower surface and the reference surface come into contact with each other. 1. An optical connection component configured to be connected to a first optical waveguide component having a plurality of light incidence/emission portions and a second optical waveguide component having a plurality of light incidence/emission portions in a face-to-face manner in a first direction , the optical connection component comprising:a holding member that includes a front end surface intersecting the first direction, a rear end surface opposite to the front end surface in the first direction, a reference surface intersecting a second direction orthogonal to the first direction, at least a pair of first guide holes provided on the front end surface, and at least a pair of second guide holes provided on the rear end surface; andan optical waveguide member that includes a front surface intersecting the first direction, a rear surface opposite to the front surface in the first direction, a lower surface intersecting the second direction, and a plurality of optical waveguides extending from the front surface to the rear surface,wherein arrangement of first ends of the plurality of optical waveguides on the ...

CABLE AND DUAL INNER DIAMETER FERRULE DEVICE WITH SMOOTH INTERNAL CONTOURS AND METHOD

A fiber optic ferrule includes a body extending from a first end to a second opposite end, with the body including an axial passage extending between the first and the second ends. The axial passage includes a first diameter portion having a diameter of at least 125 microns, a second diameter portion having a diameter of at least 250 microns and less than a diameter of a buffer, and a smooth and continuous transition between the first and the second diameter portions. The second diameter portion is positioned between the first diameter portion and the second end. The axial passage further defines a tapered shape at the second end extending inward from the second end toward the second diameter portion. In certain embodiments, another smooth and continuous transition can be provided between the taper shape and the second diameter portion. In certain embodiments, the axial passage is smooth and continuous between the first and the second ends of the body. A hub holds the ferrule. A method of assembling a terminated fiber optic cable is also provided. 114-. (canceled)15. A fiber optic ferrule and cable comprising: a first diameter portion generally cylindrical in shape adjacent the first end of the ferrule body;', 'a second diameter portion generally cylindrical in shape positioned between the first diameter portion and the second end of the ferrule body; and', 'a smooth and continuous transition area extending between and adjoining the first and the second diameter portions;, 'a ferrule body extending from a first end to an opposite second end, the ferrule body having an outer cylindrical shape, the ferrule body including a smooth and continuous axial passage extending between the first and the second ends of the ferrule body, the smooth and continuous axial passage of the ferrule body includingan optical fiber cable including an inner fiber, an outer coating, and a buffer layer, the outer coating positioned around the inner fiber and the buffer layer positioned around ...

OPTICAL FIBER FERRULES INCORPORATING A GLASS FACEPLATE AND METHODS OF FABRICATING THE SAME

Embodiments of the present disclosure are directed to hybrid optical fiber ferrules and methods of fabricating the same. In one embodiment, an optical fiber ferrule includes a glass faceplate, a plastic body molded about the glass faceplate, and at least one fiber through-hole extending through the plastic body. In another embodiment, a method of fabricating an optical fiber ferrule includes disposing a glass faceplate within a die comprising at least one fiber die pin, an injecting the die with plastic to form a plastic body such that the glass faceplate is embedded within the plastic body, wherein the at least one fiber die pin defines at least one fiber through-hole. Other materials with suitable coefficients of thermal expansion may be used for the faceplates of the fiber optic ferrules according to the concepts disclosed. 1. An optical fiber ferrule comprising:a glass faceplate;a plastic body molded about the glass faceplate; andat least one fiber through-hole extending through the plastic body.2. The optical fiber ferrule of claim 1 , wherein a portion of the glass faceplate is exposed at a mating side of the optical fiber ferrule.3. The optical fiber ferrule of claim 1 , wherein the glass faceplate comprises a borosilicate glass.4. The optical fiber ferrule of claim 1 , wherein the at least one fiber through-hole comprises a plurality of fiber through-holes.5. The optical fiber ferrule of claim 4 , wherein the plurality of fiber through-holes has a pitch greater than or equal to 100 μm and less than or equal 300 μm.6. The optical fiber ferrule of claim 4 , wherein the plurality of fiber through-holes has a pitch of 250 μm and each fiber through hole of the plurality of fiber through holes has a diameter of 80 μm.7. The optical fiber ferrule of claim 4 , wherein the plurality of fiber through-holes has a pitch of 125 μm and each fiber through hole of the plurality of fiber through holes has a diameter of 80 μm.8. The optical fiber ferrule of claim 1 , wherein ...

Plug pin for light waveguide body loadable into pin bush and manufacture thereof

Optically coupled device with waveguide alignment

Device with laterally anisotropic optical fiber and method of manufacturing the device

Optical fiber connector

Optical fiber ferrules incorporating a glass faceplate and methods of fabricating the same

Embodiments of the present disclosure are directed to hybrid optical fiber ferrules and methods of fabricating the same. In one embodiment, an optical fiber ferrule includes a glass faceplate, a plastic body molded about the glass faceplate, and at least one fiber through-hole extending through the plastic body. In another embodiment, a method of fabricating an optical fiber ferrule includes disposing a glass faceplate within a die comprising at least one fiber die pin, an injecting the die with plastic to form a plastic body such that the glass faceplate is embedded within the plastic body, wherein the at least one fiber die pin defines at least one fiber through-hole. Other materials with suitable coefficients of thermal expansion may be used for the faceplates of the fiber optic ferrules according to the concepts disclosed.

PLUG FOR LIGHT CONDUCTIVE FIBERS USING A CAPILLARY GUIDE.

Fibre-optical connector of reciprocating action

FIELD: communication lines. SUBSTANCE: given fibre-optical connector of reciprocating action is used in communication lines and is intended for connection, disconnection and repeat connection of fibers. It matches socket part of connector of ST type and has hollow cylindrical framework, coupling holder located on one end of framework, coupling attached to coupling holder, reinforcing member and terminal attached to the other end of framework, two flexible levers of latch put on outer surface of cylindrical framework or made as one unit together with it and having holes used to fix lugs of socket part, body embracing cylindrical framework, sliding over it and having two grooves to accommodate levers of latch and skewed surface close to grooves to engage front edges of levers of latch. Connector is disconnected from socket part by simple pulling back of body. As result of it skewed surfaces of cylindrical framework interact with levers of latch lifting them and releasing from lugs of socket part. EFFECT: expanded functional capabilities, reliability and simplified design of connector. 18 cl, 4 dwg су9э9сгс ПЧ Го РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) (51) МПК ВИ "” 2126 545 ' 13) Сл С 02 В 6/38 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 93058664/28, 24.02.1992 (30) Приоритет: 03.05.1991 1$ 692.946 (46) Дата публикации: 20.02.1999 (56) Ссылки: ЦЗ 4268115 А, 19.05.81. ЗИ 1654762 АЛ, 01.06.91. ЕР 0405666 А2, 02.01.91. (85) Дата перевода заявки РСТ на национальную фазу: 29.10.93 (87) Публикация РСТ: М/О 92/19999 (12.11.92) (98) Адрес для переписки: 103051 Москва, Цветной бульвар 25 стр.3, СТЭПТО энд Джонсон Компани Безруковой О.М. (71) Заявитель: Миннесота Майнинг энд Мануфактуринг Компани (1$) (72) Изобретатель: Кубикчан Нуран (ЦЗ), Джерано Альберт (1$), Неринг Раймонд Р. (0$), Пухамер Джулиус Т. (ЦЗ) (73) Патентообладатель: Миннесота Майнинг энд Мануфактуринг Компани (1$) (54) ВОЛОКОННО-ОПТИЧЕСКИЙ СОЕДИНИТЕЛЬ ВОЗВРАТНО- ...

Optical connector

Optical fiber array

본 발명에 관한 광파이버어레이는, 다른 광선로와 광결합해야 할 광결합단부면을 가지고, 이 광결합단부면에는, 복수의 광파이버의 일단부가 배열되어 있다. 그리고, 이 광파이버어레이는, 심선부의 선단부로부터 노출하는 광파이버를 위치결정하기 위한 복수의 V홈이 형성된 하플레이트(3a)와, 이 하플레이트(3a)의 V홈(4)내에 배치된 각 광파이버(1)를, 이 V홈(4)내에 압압하는 상플레이트(3b)를 구비한다. 그리고, 각광파이버선로는 심선부(7)와 광파이버(1)와의 경계부가, 내열성 접착제(10)에 의해서, 상·하플레이트(3a, 3b)사이에 고정되어 있고, 또한, 이 경계부로부터 선단부쪽의 각 광파이버(1)가, 땜납(6)에 의해서, 기밀상태에서 고정된다. 이에 의해 충분히 기밀성이 높은 허메틱시일을 실현할 수 있다.

Optical connector

본 고안은 광 커넥터를 개시한다. 상기 광 커넥터는 덮개 구조물을 스테인레스 스틸로 구성하는 한편, 상기 덮개 구조물내에 접착층을 형성한 것으로, 이를 통해 외부의 충격이 광 커넥터에 가해지더라도 광 커넥터내의 광섬유가 꺽이는 불량을 방지하고, 아울러 광섬유의 유동 방지를 통해 광섬유들의 접속이 안정적으로 이루어지도록 한다. 광 커넥터, 덮개부, 접착층, 광섬유, 광케이블 The present invention discloses an optical connector. The optical connector comprises a cover structure made of stainless steel, and forms an adhesive layer in the cover structure, thereby preventing failure of the optical fiber in the optical connector to be broken even when an external impact is applied to the optical connector. Prevention ensures stable connection of optical fibers. Optical connector, cover, adhesive layer, optical fiber, optical cable

High precision optical fiber connectors

A duplex fiber optic connector assembly enables mating the fibers of a first multifiber cable with like fibers of a second cable or cables with maximum axial alignment of the respective fiber paris. An interconnect member receives cable terminating connectors in opposite sides thereof. Each connector carries the fibers of a respective cable in individual ferrules, each ferrule having limited floating mount within the respective connector. The mating pairs of ferrules are received in opposite ends of receptor members each of which has an axially profiled bore adapted to receive the respective ferrules and a profiled outer surface which allows movement about the geometric center of the receptor so as to axially align the bores of the ferrules received therein. Connectors at each end of a predetermined length of fiber optic cable provide a fiber optic extension cord, analogous to the well-known electrical extension cord, for convenient and efficient interconnection between optical signal-using equipments. Small interconnect members receive the connectors of such fiber optic extension cords to allow even wider-ranging interconnections. Wall boxes containing such interconnect members, connected to permanently installed fiber optic cables conveying optical signals from a central optical signal source, allow a user to readily access optical signals by "plugging-in" a connector therein.

Multifiber optical connector plug with low reflection and low insertion loss

A multifiber optical connector plug capable of realizing low reflection and low insertion loss, without using the refractive index matching material. The multifiber optical connector plug includes a connector plug member made of a plastic material, having a connecting facet on which endfaces of the optical fibers to be connected with other optical fibers are arranged in a transverse direction between the guide pin insertion holes, with the endfaces of the optical fibers projecting out of the connecting facet, the connecting facet being inclined with respect to an axial direction along optical axes of the optical fibers by an angle which is larger than a total reflection critical angle of light beams transmitted through the optical fibers. The connecting facet may have a flat surface shape or a convex ellipsoidal surface shape. A multifiber optical connector can be formed by a pair of such multifiber optical connector plugs with spring member for pressing the multifiber optical connector plugs toward each other in the axial direction and guide pins for aligning the multifiber optical connector plugs.

Surface hardened formed part made of amorphous alloy, and its manufacturing method

(57)【要約】 【課題】 非晶質合金本来の優れた特性に加えて耐摩耗 性が著しく改善された非晶質合金製成形品及びそのため の表面硬化技術を提供する。 【解決手段】 実質的に非晶質の合金からなる成形品 を、反応性ガスを含む雰囲気下にてその材料の等温変態 曲線（ＴＴＴ曲線）のアモルファス領域内の温度及び時 間で熱処理し、上記成形品表面にセラミック系硬質層を 形成する。例えば、熱処理を１ｐｐｍ以上の酸素又は／ 及び窒素を含む雰囲気下又は大気雰囲気下で、母材自体 の少なくとも１種の構成元素の酸化反応又は窒化反応の 最低温度以上の温度で行なう。このような熱処理によ り、１０μｍ以下の表面粗さ変化量及び／又はサイズ変 化量で、母材５０自体の少なくとも１種の構成元素の酸 化物又は／及び窒化物を含むセラミック系硬質層５１ を、酸化物又は／及び窒化物の含有割合が表面から母材 に向う深さ方向に漸次減少するように形成できる。

Temperature compensated fiber bragg gratings

Optical sensor device having creep-resistant optical fiber attachments

A method and device for pressure sensing using an optical fiber having a core, a cladding and a Bragg grating imparted in the core for at least partially reflecting an optical signal at a characteristic wavelength. The cladding has two variation regions located on opposite sides of the Bragg grating to allow attachment mechanisms to be disposed against the optical fiber. The attachment mechanisms are mounted to a pressure sensitive structure so as to allow the characteristic wavelength to change according to pressure in an environment. In particular, the variation region has a diameter different from the cladding diameter, and the attachment mechanism comprises a ferrule including a front portion having a profile substantially corresponding to at least a portion of the diameter of the variation region and a butting mechanism which holds the ferrule against the optical fiber.

High precision optical fiber connectors

A connector for an optical fiber comprising, a body (86, 86') at least one ferrule (66, 66', 68, 68') encircling a corresponding optical fiber, a coil spring (337) compressible between a flange on the corresponding ferrule and a ridge (48) of the body (86, 86'), and the corresponding ferrule extends through a recess (52) in a second ridge (46) and is pivotally moveable in the recess (52).

Processes for preparing the splice connection of an integrated optical device to at least one optical cable

Procédé de préparation d'un sous-ensemble de raccordement d'un dispositif d'optique intégrée (21) à un câble optique, tel que: - on utilise une multiferrule ayant des canaux internes (2) débouchant sur deux de ses faces opposées (6, 7) appelées première et deuxième faces, - on utilise un câble optique intermédiaire, - on introduit par la première face (6) les fibres intermédiaires (27) dans les canaux (2), - on immobilise les fibres (27) dans les canaux (2) sur une partie de leur longueur, - on découpe la multiferrule et les fibres immobilisées (27) pour obtenir un tronçon de multiferrule (34) dans lequel les fibres sont en partie immobilisées, - on raccorde les fibres immobilisées (27) du tronçon (34) au dispositif (21), - on découpe les fibres (27) à proximité de la deuxième face (7) et on les élimine de manière à laisser les canaux (2) en partie vides, pour obtenir le sous-ensemble de raccordement (36). Process for preparing a sub-assembly for connecting an integrated optical device (21) to an optical cable, such as: - a multi-ferrule is used having internal channels (2) opening out on two of its opposite faces ( 6, 7) called first and second faces, - an intermediate optical cable is used, - the intermediate fibers (27) are introduced through the first face (6) into the channels (2), - the fibers (27) are immobilized in the channels (2) over part of their length, - the multiferrule and the immobilized fibers (27) are cut to obtain a section of multiferrule (34) in which the fibers are partially immobilized, - the immobilized fibers are connected (27 ) from the section (34) to the device (21), - the fibers (27) are cut near the second face (7) and removed so as to leave the channels (2) partly empty, to obtain the sub - connection set (36).

CONNECTOR FOR OPTICAL FIBERS

OPTICAL FIBER CONNECTOR

Optical fiber positioning member

The optical fiber positioning member in accordance with the present invention comprises a resin composition containing a PPS resin mainly composed of a linear type PPS resin at a content in the range of 24% to 30% by weight, silica particles at a content in the range of 61% to 67% by weight, and tetrapod-shaped whiskers at a content in the range of 6% to 12% by weight.

TRANSVERSELY ANISOTROPIC FIBER DEVICE AND ITS MANUFACTURING METHOD.

La surface latérale d'une ferrule (16) portant ladite fibre (10) présente sensiblement un dièdre saillant (17, 19) engagé dans sensiblement un dièdre rentrant complémentaire (22, 24) formé dans un récepteur de ferrule (20). L'invention s'applique notamment à la réalisation d'une tête d'émission laser pour réseau de télécommunications à fibres optiques. The lateral surface of a ferrule (16) carrying said fiber (10) has substantially a projecting dihedron (17, 19) engaged in substantially a complementary re-entrant dihedron (22, 24) formed in a ferrule receiver (20). The invention applies in particular to the production of a laser emission head for an optical fiber telecommunications network.

Patent FR2504692B1

METHOD FOR CONNECTING TWO FIBER OPTIC CABLES BY SPLICING.

METHOD AND APPARATUS FOR POSITIONING AND HOLDING AN OPTICAL FIBER TERMINATION IN A CONNECTING END, CONNECTING END AND OPTICAL CONNECTOR THUS PRODUCED

Device for assembling optical fibres

The present invention relates to a device for assembling optical fibres and, more particularly, a device making it possible to arrange a plurality of optical fibres into a bundle and to hold them in this arrangement. The device of the invention essentially includes a deformable ferrule 4 loosely joining together a plurality of optical fibres. This ferrule 4 is pushed into the restriction of a cylindrical body 1 having a central taper bore 10, which distributes the optical fibres into their ideal geometrical position. Application to the production of couplers, connectors, multiplexers and any passive or active terminal component.

Patent FR2458825B1

Termination of optical fibre cable - using annular deformable member having passage to receive cable and subjected to compression

An optical fibre cable is terminated by compressing inwards the deformable member (1) to secure the cable in the passage. The compression operation is carried out by using a rim (7) which consists of a material having form-retaining and size-retaining properties. The rim surrounds the deformable member and endeavours to return to its original form and size. In so doing, it exerts a compressive force on the member which is deformed inwardly under this force.

POLARIZATION MONOMODE OPTICAL FIBER OPTIC CONNECTOR END AND METHOD OF ADJUSTING THE SAME.

L'INVENTION EST RELATIVE A UN EMBOUT DE CONNECTEUR POUR FIBRES OPTIQUES MONOMODE A MAINTIEN DE POLARISATION, COMPRENANT UN CORPS EXTERIEUR TUBULAIRE COMPORTANT A SON EXTREMITE AVANT UN EVIDEMENT PRESENTANT UNE PAROI DE PROFIL CONIQUE, UN ELEMENT CYLINDRIQUE INTERIEUR A L'INTERIEUR DUQUEL UNE FIBRE OPTIQUE PEUT ETRE IMMOBILISEE, EN PARTICULIER PAR COLLAGE, LEDIT ELEMENT INTERIEUR FAISANT SAILLIE DE LADITE EXTREMITE DU CORPS EXTERIEUR, LEDIT CORPS EXTERIEUR COMPORTANT DES TROUS RADIAUX POUR L'ENGAGEMENT D'ORGANES TELS QUE DES POINCONS, POUR CENTRER MECANIQUEMENT L'ELEMENT INTERIEUR DANS LE CORPS EXTERIEUR. IL COMPREND UNE DOUILLE18 MONTEE A ROTATION AUTOUR DUDIT CORPS1 ET DES MOYENS20 POUR IMMOBILISER LADITE DOUILLE DE PREFERENCE PAR COLLAGE, SUR LEDIT CORPS, LADITE DOUILLE ETANT EN OUTRE MUNIE D'UN REPERE D'INDEXATION19. THE INVENTION RELATES TO A CONNECTOR END FOR MONOMODE OPTICAL FIBERS WITH POLARIZATION MAINTENANCE, INCLUDING AN EXTERIOR TUBULAR BODY INCLUDING AT ITS END BEFORE A RECESS PRESENTING A WALL OF CONICAL PROFILE, AN INTERIOR CYLINDRICAL ELEMENT OF THE OPTICAL FIBER TO THE INTERIOR. CAN BE IMMOBILIZED, IN PARTICULAR BY GLUING, THESE INTERIOR ELEMENT PROJECTING FROM THE SAID END OF THE EXTERIOR BODY, THESE EXTERIOR BODY INCLUDING RADIAL HOLES FOR THE ENGAGEMENT OF ORGANS SUCH AS PUNCHES, TO CENTER MECANICALLY INTO THE BODY INTERIOR OUTSIDE. IT INCLUDES A BUSH18 MOUNTED TO ROTATE AROUND THE BODY1 AND MEANS20 FOR IMMOBILIZING THE SAID BUSH PREFERREDLY BY GLUING, ON THIS BODY, THE SAID BUSH BEING FURTHER EQUIPPED WITH AN INDEXATION MARK19.

CONNECTOR FOR OPTICAL FIBERS, WITH SHAPE MEMORY

Patent FR2335859B1

CONNECTION DEVICE FOR OPTICAL FIBERS

DISPOSITIF DE RACCORDEMENT POUR FIBRES OPTIQUES. IL COMPORTE UN MANCHON 5 A DOUBLE ENTREE, MUNIE D'UNE BUTEE CENTRALE 6 PERCEE D'UN CANON 7 DANS LEQUEL EST LOGEE UNE RONDELLE 8, DE PREFERENCE EN PIERRE, DONT LE DIAMETRE DE L'ORIFICE CENTRAL, CONCENTRIQUE AUDIT CANON, EST EGAL, AUX TOLERANCES PRES, A CELUI DES FIBRES OPTIQUES 1 ET 3 A RACCORDER. LES DEUX ENTREES DU MANCHON RECOIVENT UNE FERULE, TELLE QUE 9, RENDUE SOLIDAIRE DE LA GAINE 2 DE LA FIBRE OPTIQUE 1 ASSOCIEE. LA FERULE EST PERCEE D'UN CANON CONCENTRIQUE A L'ORIFICE DE LA RONDELLE 8 ET DE DIAMETRE EGAL, AUX TOLERANCES PRES, A CELUI DE LA FIBRE OPTIQUE. CONNECTION DEVICE FOR OPTICAL FIBERS. IT INCLUDES A SLEEVE 5 WITH DOUBLE ENTRY, EQUIPPED WITH A CENTRAL STOP 6 BORED BY A BARREL 7 IN WHICH IS HOUSED A WASHER 8, PREFERRED IN STONE, WHOSE CENTRAL ORIFICE DIAMETER, CONCENTRIC AUDIT GUN, IS EQUAL , WITH NEAR TOLERANCES, TO THAT OF OPTICAL FIBERS 1 AND 3 TO BE CONNECTED. THE TWO INPUTS OF THE SLEEVE RECEIVE A FERULA, SUCH AS 9, SOLIDARITY OF THE SHEATH 2 OF THE ASSOCIATED OPTICAL FIBER 1. THE FERULE IS DRILLED WITH A CONCENTRIC BARREL AT THE ORIFICE OF WASHER 8 AND OF EQUAL DIAMETER, TO NEAR TOLERANCES, TO THAT OF OPTICAL FIBER.

Bendable tail sleeve of optical fiber connector

本发明提供一种光纤连接器的尾套，该尾套包括：弹性的中空柱状体，定义出轴向；以及形状保持件，形成在该中空柱状体的内表面上。根据本发明的光纤连接器的尾套，可施力弯曲尾套成所要的形状。当尾套弯曲后，其内部的形状保持件也会跟着弯曲。而当弯曲尾套的外力消失后，形状保持件可使尾套保持在该形状。要使尾套回复至原来的形状，仅需再施力弯折尾套即可。

Multi-Centre/Single fibre optic connection for multi-element fibre optic cables

Four fibre optic cables (F1-F4) are free at one end, and fixed at the other end. The fixed end has the fibre optic centres (I1-I4) forming a precision square of 44 microns spacing. The outer optical sleeves (21-24) are tangential to each and have a common outer diameter of 106 microns. To effect connection, the fixed fibres are placed in a holding clamp of the same dimension as the outer sleeves, and the cables are cut to length. The cables are glued together, then the outers stripped off with Hydrofluoric acid to form the connections.

Method for manufacturing glass product

A manufacturing method for a glass product not having a rotatively symmetric body like an optical fiber fixing member but having a fine structure as of optical fiber engagement portions, to transfer the fine structure with a high precision without creating molding burrs, includes the steps of placing a glass material in a cavity defined by a lower mold, an upper mold, and a side mold, molding the glass material in the cavity with pressure into the glass product in so controlling that the glass material has a viscosity range of 10 6.5 to 10 9.5 poises at the beginning of molding operation with pressure, that the lower mold is at a temperature in a range such that the glass material indicates the above viscosity range, and that the upper and side molds are at a temperature in a range such that a converted viscosity of the glass material at the temperature of the upper and side molds is 5 to 100 times higher than the viscosity of the glass material at the temperature of the lower mold, and decreasing the temperature of the lower mold at the same time that or after the glass product begins to be molded with pressure. To produce an optical fiber fixing member, the lower mold has a mold face for molding optical fiber engagement portions of the optical fiber fixing member; the upper mold has a mold face for molding a bottom of the optical fiber fixing member; and the side mold has a mold face for molding a side face of the optical fiber fixing member

An optical connector having a housing assembly that is comprised of polyphenylsulfone

The present invention provides an optical connector having a housing assembly comprised of polyphenylsulfone (PPSU). PPSU has several characteristics that make it suitable for use with optical connectors including good flexibility, low sensitivity to molding parameters, good environmental properties, and compatibility with anaerobic adhesives, which are often used to attach the optical fiber to the ferrule in private networks. The connector preferably comprises a one-piece housing, which enhances the side-loading characteristics of the connector. The connector preferably comprises a ferrule assembly and an insert that are housed within the one-piece housing. The insert has a keying mechanism formed thereon that is adapted to mate with a keying mechanism formed in the housing. When the insert is inserted into the first end of the housing, the keying mechanism of the insert interlocks with the keying mechanism of the housing to lock the insert into place within the housing.

Component for connection to a multicore fiber and method of making it.

Patent FR2406211B1

CONNECTOR FOR OPTICAL FIBER

L'invention concerne un connecteur pour fibre optique. Un court segment de fibre de diametre connu avec précision et maintenu dans le connecteur est raccordé par soudure à l'extrémité d'une fibre de transmission de grande longueur. Application aux télécommunications.

OPTICAL FIBER OPTIC LIGHT DRIVER AT HIGH TEMPERATURES IN ITS FRONT SURFACE AREA AND METHOD OF MANUFACTURING SAME

CONDUCTEUR DE LUMIERE A FIBRES OPTIQUES RESISTANT AUX TEMPERATURES ELEVEES DANS SA ZONE DE SURFACE FRONTALE ET PROCEDE POUR SA FABRICATION. L'OBJET DE L'INVENTION EST CARACTERISE PAR LE FAIT QUE, AUSSI BIEN LE SEGMENT DE TUBE DE VERRE QUE LE FAISCEAU DE FIBRES CONDUCTRICES DE LA LUMIERE SONT CONSTITUES EN VERRE RESISTANT AUX TEMPERATURES ELEVEES ET QUE LE SEGMENT DE TUBE EST COULE SUR LE FAISCEAU DE FIBRES CONDUCTRICES DE LA LUMIERE SUR UNE LONGUEUR DEFINIE DE TELLE MANIERE QUE LES ESPACES VIDES ENTRE LES DIFFERENTES FIBRES CONDUCTRICES DE LA LUMIERE ETOU ENTRE LES FIBRES CONDUCTRICES DE LA LUMIERE ET LE SEGMENT DE TUBE SONT REMPLIS, AU MOINS PARTIELLEMENT PAR LE MATERIAU DU SEGMENT DU TUBE DE VERRE ETOU PAR LE MATERIAU DES GAINES DE FIBRES CONDUCTRICES DE LA LUMIERE. OPTICAL FIBER LIGHT CONDUCTOR RESISTANT TO HIGH TEMPERATURES IN ITS FRONT SURFACE ZONE AND PROCESS FOR ITS MANUFACTURING. THE OBJECT OF THE INVENTION IS CHARACTERIZED BY THE FACT THAT BOTH THE GLASS TUBE SEGMENT AND THE BEAM OF LIGHT-CONDUCTING FIBERS ARE MADE OF GLASS RESISTANT TO HIGH TEMPERATURES AND THAT THE SEGMENT OF TUBE IS CAST ON THE BEAM OF LIGHT CONDUCTING FIBERS OVER A LENGTH DEFINED SO THAT THE GAPS BETWEEN THE VARIOUS LIGHT CONDUCTING FIBERS AND OR BETWEEN THE LIGHT CONDUCTING FIBERS AND THE TUBE SEGMENT ARE FILLED BY AT LEAST PARTIAL MATERIAL GLASS TUBE CAUGHT BY THE MATERIAL OF THE LIGHT CONDUCTING FIBER SHEATHS.

Polyarylene sulfide resin composition for optical communication part

The invention is drawn to a polyarylene sulfide resin composition for optical communications parts, containing a polyarylene sulfide resin (A) having a melt viscosity of 8 to 20 Pa·s as measured at 300°C and a shear rate of 500/sec and spherical silica (B) having a mean particle size of 3 to 25 µm and containing silica particles having a particle size of 1 µm or less in an amount of 50 wt.% or less based on the entire amount of the silica, the component (A) content being 15 wt.% or more and less than 20 wt.% and the component (B) content being more than 80 wt.% and 85 wt.% or less, based on the sum of the weights of the components (A) and (B). According to the invention, a polyphenylene sulfide resin composition suitably used for forming optical communications parts such as optical fiber connector ferrules and sleeves can be provided.

Connector for an optical fibre

Abstract The inclination (6) of the fibre end surface (4) is arranged in such a way that an edge area (7), which extends through 360 degrees, remains around the inclination. The inclination is separated from the edge area by an annular shaped indentation. In this way the connector pin has on its face (5) a constantly unchanging limit-stop surface in each desired relative position. (Figure 3)

Capillary for optical fiber connectors and method of manufacturing the same

A capillary for an optical fiber connector which is low in machining cost and a process for producing the same is provided. The capillary for an optical fiber connector of the present invention comprises a cylindrical ceramics sintered body, and having a straight-hole like narrow hole 3 with a slightly larger inner diameter than an outer diameter of the optical fiber bare line for passing the bare line of the optical fiber therethrough, and a tip surface for connection at which the narrow hole opens; and an inner surface of the narrow hole being substantially a sintered surface. Therefore, a number of steps of grinding of the inner surface of the narrow hole is markedly reduced thin the conventional capillary for an optical fiber connector so that production cost can be reduced to a low amount.

Optical connector

OPTICAL CONNECTOR Abstract Disclosed is an optical connector for high density arrays. A rotating mechanism is employed around the fiber ferrule in combination with a spring so as to engage one or more tabs on the connector sleeve. The rotating mechanism includes a serpentine type groove configuration which captures the tabs when the ferrule is pushed into the sleeve and releases the tabs when a longitudinal force is again applied to the ferrule.

Optical fiber connector

Optical fiber connector comprises a ferrule receiving an optical fiber and a sleeve member for holding the ferrule. The body of the ferrule is made of glass on which a thin layer is deposited for reinforcement of the body. The thin layer may be made by hydrolysis, chemical vapor deposition, spray coating etc. The ferrule of the optical fiber connector is inexpensive, easy to assemble and suitable for mass production.

Fabry-perot optical sensing device for measuring a physical parameter

The optical sensing device and the method thereof are for measuring a physical parameter. The device is to be connected to a light source which generates a multiple frequency light signal having predetermined spectral characteristics. The device comprises a Fabry-Perot interferometer through which the light signal is passed, an optical focusing device for focusing at least a portion of the light signal outgoing from the Fabry-Perot interferometer, and a Fizeau interferometer through which the focused light signal is passed. The Fabry-Perot interferometer includes two semi-reflecting mirrors substantially parallel to one another and spaced by a given distance so as to define a Fabry-Perot cavity having transmittance or reflectance properties which are affected by the physical parameter and which cause the spectral properties of the light signal to vary in response to the physical parameter. The Fabry-Perot interferometer is provided with at least one multimode optical fiber for transmitting the light signal into the Fabry-Perot cavity and for collecting the portion of the light signal outgoing thereof. The Fizeau interferometer includes an optical wedge forming a wedge-profiled Fizeau cavity from which exits a spatially-spread light signal indicative of the transmittance or reflectance properties of the Fabry-Perot interferometer. The physical parameter can be determined by means of the spatially-spread light signal.

CONNECTING KNOT FOR OPTICAL FIBERS AND METHOD OF ITS APPLICATION

ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß (19) RU (51) ÌÏÊ 7 (11) 2005 106 197 (13) A G 02 B 6/38 ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÇÀßÂÊÀ ÍÀ ÈÇÎÁÐÅÒÅÍÈÅ (21), (22) Çà âêà: 2005106197/28, 07.08.2003 (71) Çà âèòåëü(è): ËÅ ÑÀÂÓÀÐ ÄÞ ÃÀÐÄÜÅÍ ÈÍÊ. (CA) (30) Ïðèîðèòåò: 09.08.2002 CA 2,397,280 (43) Äàòà ïóáëèêàöèè çà âêè: 10.08.2005 Áþë. ¹ 22 (86) Çà âêà PCT: CA 03/01195 (07.08.2003) (74) Ïàòåíòíûé ïîâåðåííûé: Äåìåíòüåâ Âëàäèìèð Íèêîëàåâè÷ Àäðåñ äë ïåðåïèñêè: 119034, Ìîñêâà, Ïðå÷èñòåíñêèé ïåð., 14, ñòð.1, 4 ýòàæ, "Ãîóëèíãç Èíòåðíýøíë Èíê.", Â.Í.Äåìåíòüåâó R U Ôîðìóëà èçîáðåòåíè 1. Ñîåäèíèòåëüíûé óçåë äë îïòè÷åñêèõ âîëîêîí, êîòîðûé âêëþ÷àåò â ñåá (a) ñîåäèíèòåëü, êîòîðûé ñîäåðæèò èäóùèé â ïðîäîëüíîì íàïðàâëåíèè êîðïóñ, ïðè÷åì óêàçàííûé êîðïóñ èìååò ïåðâûé êîíåö, âòîðîé êîíåö è êàíàë, èäóùèé îò óêàçàííîãî ïåðâîãî êîíöà äî óêàçàííîãî âòîðîãî êîíöà, ïðè÷åì êîðïóñ èìååò ìíîæåñòâî øòûðåâûõ âûñòóïîâ, êîòîðûå èäóò â ïðîäîëüíîì íàïðàâëåíèè ó êàæäîãî èç óêàçàííûõ ïåðâîãî è âòîðîãî êîíöîâ; (b) ïåðâûé ôëàíåö, êîòîðûé ïî îêðóæíîñòè ñîåäèíåí ñ ïåðâûì êîíöîì ñîåäèíèòåë , è âòîðîé ôëàíåö, êîòîðûé ïî îêðóæíîñòè ñîåäèíåí ñ âòîðûì êîíöîì ñîåäèíèòåë ; (c) ãíåçäî ñîåäèíèòåë , êîòîðîå ñîäåðæèò ÷åòûðå ÷àñòè è îáðàçóåò êàìåðó ñîåäèíèòåë , ïðåäíàçíà÷åííóþ äë ïðèåìà ñîåäèíèòåë ïðè ñîåäèíåíèè ñ óêàçàííûìè ôëàíöàìè, ïðè÷åì óêàçàííûå ÷åòûðå ÷àñòè âûïîëíåíû òàêèì îáðàçîì, ÷òî äâå èç íèõ â ñîáðàííîì ñîñòî íèè îáðàçóþò ïåðâûé êîíåö, à äâå äðóãèå â ñîáðàííîì ñîñòî íèè îáðàçóþò âòîðîé êîíåö ãíåçäà ñîåäèíèòåë è âûïîëíåíû òàêèì îáðàçîì, ÷òîáû ïðèêëàäûâàòü ðàñò ãèâàþùåå óñèëèå ê ñîåäèíèòåëþ, êîãäà îí óñòàíîâëåí â êàìåðå ñîåäèíèòåë , çà ñ÷åò îñåâîãî âðàùåíè ïåðâîãî êîíöà îòíîñèòåëüíî âòîðîãî êîíöà ãíåçäà ñîåäèíèòåë , ïðè÷åì êàæäûé èç êîíöîâ ãíåçäà ñîåäèíèòåë èìååò îòâåðñòèå è ïðîõîä ÷åðåç êàíàë ìåæäó óêàçàííûì îòâåðñòèåì è êàìåðîé ñîåäèíèòåë ; (d) èãëó, âûïîëíåííóþ ñ âîçìîæíîñòüþ ââåäåíè ÷åðåç óêàçàííîå îòâåðñòèå, ïðîïóñêàíè ÷åðåç êàíàë è êàíàë ñîåäèíèòåë , ñ âîçìîæíîñòüþ ...

Method of ceramic ferrule outer diameter processing

Processing the outer periphery of a ceramic ferrule involves rotatably holding a ferrule (1) at opposite ends of its central bore (2) by respective centers (42, 44) of a cylindrical grinder and rotating it by a chuck (46) mounted on one end of the ferrule. A 600 grit grindstone (40), for instance, is pushed against the blank as it is rotated to effect outer periphery processing. A predetermined concentricity between the center bore and outer periphery of the blank is thus obtained. Subsequently, processing of the outer periphery for improving the surface roughness and obtaining a final outer periphery diameter is carried out using a centerless grinder (32-34).

Optical connector with plastic alignment ferrule

An optical connector (1) comprising an alignment ferrule (11) having a central passage (14) for aligning an optical fiber (3) of an optical fiber cable (2), a rear end (19) of the ferrule (11) for connection to an optical fiber cable (2), a radially enlarged collar (20) surrounding the ferrule (11), a circumferential groove (23) in the ferrule (11), a coupling nut (26) moveable axially over the ferrule (11), a clearance (29) between the coupling nut (26) and the collar (20) in which the collar (20) is retracted to compress the spring (28), the ferrule (11) is unitary with the transverse front face (22) and the rear face (24) of the collar (20), the ferrule (11) and the collar (20) are molded from a rigid plastic material, and the collar (20) includes mold gate flash (48) on the molded plastic material only at locations along the clearance (29) between the collar (20) and the coupling nut (26).

Optical fiber connector and method of its application

FIELD: optoelectronics. SUBSTANCE: proposed connector assembly comprises connector (10) made from material with shape memory and having casing (16), connector channel (22) running from first end (18) to second end (20) and having multiple pins (24, 26), first and second flanges (34), and connector socket consisting of four parts (38) that make, when assembled, a connector chamber. Two of aforesaid assembled parts make first end, the other two parts make the connector socket second end, both parts being arranged to allow applying expanding force to connector (10) and flanges, fitted inside aforesaid chamber, by axially rotating connector socket first end relative to second end. In compliance with second version, every aforesaid end has a hole and passage through channel between said hole and connector chamber, while connector assembly additionally comprises needle (54) to be inserted through said hole, to expand aforesaid channel on inserting said needle through said channel. EFFECT: simple and fast mounting, good signal passage between optical fibers. 3 cl, 12 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 375 730 (13) C2 (51) МПК G02B 6/38 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21), (22) Заявка: 2005106197/28, 07.08.2003 (24) Дата начала отсчета срока действия патента: 07.08.2003 (72) Автор(ы): ВЕЙНАНТ Эрик (CA), ДЕМИССИ Даниэль (CA) (43) Дата публикации заявки: 10.08.2005 2 3 7 5 7 3 0 (45) Опубликовано: 10.12.2009 Бюл. № 34 (56) Список документов, цитированных в отчете о поиске: ЕР 0104820 A1, 04.04.1984. JP 1302209 A, 12.06.1989. ЕР 0373340 A1, 20.06.1990. RU 2134895 C1, 20.08.1999. RU 94045862 A1, 20.08.1996. 2 3 7 5 7 3 0 R U (86) Заявка PCT: CA 03/001195 (07.08.2003) C 2 C 2 (85) Дата перевода заявки PCT на национальную фазу: 09.03.2005 (87) Публикация PCT: WO 2004/015473 (19.02.2004) Адрес для переписки: 119034, Москва, Пречистенский пер., д.14, стр. 1, 4 этаж, "Гоулингз ...

Positioning element for optical fibers

Method of manufacturing ferrule or multiferrule blanks, and blanks obtained by this method

Method of manufacturing ferrule or multiferrule blanks (10) made of a glassy material, possessing at least one bore (11), characterised in that it comprises the following operations: - machining at least two workpieces (1) made of glassy material, these workpieces being called preblanks, each possessing at least one plane face (2), and such that the joining of a plane face (2) of each of the preblanks (1) against a plane face (2) of another of the preblanks (1) forms a workpiece of external surface similar to that of the blank (10); - machining at least one groove (3) in at least one of the plane faces (2), this groove being intended to be joined against another of the plane faces (2), over the entire length of the faces; - joining the preblanks (1) so as to form the blank (10) and the bores (11). The method according to the invention applies to the manufacture of ferrule or multiferrule blanks intended for connecting optical fibres.

METHOD AND MEASURING DEVICE FOR MEASURING THE DOSAGE OR DOSAGE PERFORMANCE OF CORE RADIATION

Method of splicing two optical fiber cables

A method of splicing two optical fiber cables uses a glass multi-ferrule having a series of parallel axis internal capillary channels opening onto respective end surfaces of the multi-ferrule and two exterior reference surfaces. An adhesive that is polymerized by ultraviolet light is introduced into these channels. The multi-ferrule is cut into three sections. The splicing is achieved by jointing the outermost two sections.

Temperature compensated fiber bragg gratings

The invention is a temperature compensating structure for a fiber Bragg grating (FBG) contained in optical fiber (11). The structure comprises two plates (12, 13) made of material having different temperature coefficients of expansion and bonded together. The optical fiber (11) is bonded to the exposed surface of the plate (12) having the lower temperature coefficient. The structure bends with changes in temperature and produces an elongation of the fiber (11) with decreasing temperature.

Optical fiber connector

An optical fiber connector includes a cable with an optical fiber and a tube for containing the fiber. The fiber is able to move freely and axially within the tube, and is secured by a device having an internal diameter substantially the same as that of the optical fiber. This securing prevents the axial movement of the fiber held inside the tube. The securing device also has a cylindrical bore for receiving the cable fixed to the securing means.

Ferrule for optical fiber connector and its production

(57)【要約】 【課題】 所望の形状、寸法精度を満足したフェルール を単一プロセスで量産性良く製造でき、研磨等の機械加 工工程を省略又は大幅に削減できる方法を提供し、もっ て耐久性、光伝達性等に優れた安価なフェルールを提供 する。 【解決手段】 光ファイバーを固定する挿通孔２を有す る光ファイバーコネクター用フェルール１は、少なくと もガラス遷移領域を有する非晶質合金、特に温度幅３０ Ｋ以上のガラス遷移領域を有する非晶質合金からなる。 好適には、一般式：ＸａＭｂＡｌｃ、但し、ＸはＺｒ及 びＨｆから選ばれる１種又は２種の元素、ＭはＭｎ、Ｆ ｅ、Ｃｏ、Ｎｉ及びＣｕよりなる群から選ばれる少なく とも１種の元素、ａ、ｂ、ｃは原子％で、２５≦ａ≦８ ５、５≦ｂ≦７０、０＜ｃ≦３５で示される組成を有 し、少なくとも体積率５０％以上の非晶質相を含む非晶 質合金からなる。このようなフェルールは金型鋳造法又 は金型成形法により量産性よく製造できる。

Fiber optic connector

A connector for a fiber optic cable securely retains the optical fiber without the use of adhesives, and uses a basic assembly step to simultaneously retain the optical fiber. In a first embodiment, the step of crimping a crimping ferrule to retain strength fiber members of the fiber optic cable simultaneously collapses a portion of the connector to securely retain the optical fiber in the connector. In a second embodiment of the invention, the step of inserting an inner member into the connector body causes an end portion to collapse, securely retaining the optical fiber, and may also cause an intermediate portion of the inner member to collapse, securely retaining a buffer or inner jacket layer. Such a fiber optic connector may be made either entirely of metal, or of plastic, without substantial structural modification, as appropriate for use in its intended environment.

Flat plate type light connector

Patent JPS5171149A

Optical fiber coupling unit and optical waveguide arrangement, and method of producing an optical fiber coupling unit

Optical fiber coupling unit and optical waveguide arrangement, and method of producing an optical fiber coupling unit. The optical fiber coupling unit 1 has: an optical fiber 2 , which has a fiber core 4 and a fiber cladding 6 surrounding the fiber core 4 , and a sleeve 8 , which is arranged on an end portion of the optical fiber 2 and terminates flush with the associated extreme end 14 of the optical fiber 2 , so that on this extreme end 14 there is formed a continuous coupling face 16 , with which the optical fiber coupling unit 1 can be placed against an optical waveguide component to establish an optical coupling.

Fibre optic coupling block - has parallel grooves across substrate block and screw adjuster drawing fibres together

The coupling for optical fibres includes two diverging metal strips (3, 4) connected together at points (5) by a solder. Near the ends of the strips a substrate block is fixed (6) made of plastic, ceramic or metal material, and having a parallelepiped shape. In the top surface of the block (6) are four parallel V-shaped grooves extending over the length of the block. Holes in the metal strip ends (8, 9) are made in line with the grooves for the fibres to pass through. The teeth (10, 11) of comb like parts hold the fibres into the grooves. To bring the ends of the joined fibres together on the block (6), an adjusting screws is provided linking the two metal strips together at their mid-points.

Optical pressure sensor device having creep-resistant optical fiber attachments

A method and device for pressure sensing using an optical fiber having a core, a cladding and a Bragg grating imparted in the core for at least partially reflecting an optical signal at a characteristic wavelength. The cladding has two variation regions located on opposite sides of the Bragg grating to allow attachment mechanisms to be disposed against the optical fiber. The attachment mechanisms are mounted to a pressure sensitive structure so as to allow the characteristic wavelength to change according to pressure in an environment. In particular, the variation region has a diameter different from the cladding diameter, and the attachment mechanism comprises a ferrule including a front portion having a profile substantially corresponding to at least a portion of the diameter of the variation region and a butting mechanism which holds the ferrule against the optical fiber.

Photon-conducting media alignment using a thermokinetic material

Photon-conducting receiving and transmitting media (e.g., optical fibers) are aligned by coupling the receiving medium with a thermokinetic structure, which can include a shape memory alloy. A photon beam is directed from the transmitting medium onto the thermokinetic structure, thereby locally heating the thermokinetic structure. The heated portion of the thermokinetic structure contracts to displace other portions of the structure and the receiving medium, which is coupled therewith, toward the photon beam so as to align the media.

Clamping and guide sleeve for optical fibre plug connection - has holders receiving centred and fixed optical fibre ends and sleeve may have curved portion

The optical-fibre clamping and guide sleeve (1) has means to guide and adjust the two optical-fibre holders (6a, 5b). These holders are fixed in this position due to spring tension. The sleeve may have in its centre part at least three slits (5) distributed evenly over the periphery and it may be curved towards the centre axis. The sleeve may consist of a resilient material and may have a continuous longitudinal slit and be undersized in relation to the outside dia. of the holders.

Method of making multi-ferrules having a series of channels with parallel axes

The invention relates to a method of making multi-ferrules. It provides a method of making multi-ferrules from a vitreous material, the multi-ferrules having a series of cylindrical channels with parallel axes. The method is characterized in that it comprises the following steps: forming a blank (1) of well-defined section from a vitreous material, in which cylindrical passages (2) having parallel axes and an inside diameter Di have been machined, the dimensions of the outside section of the blank and the diameter Di being defined with relative accuracies at least equal to the accuracies required respectively for the dimensions of the outside section of the multi-ferrule (11) to be made and the inside diameter of the channels (9) of said multi-ferrule, positioning this blank (1) vertically in an apparatus of the same type as a fiber drawing apparatus for optical fibers, exerting traction on the piece (6) being formed at the bottom end of said blank (1) in such a manner as to obtain the required outside dimensions, controlling the dimensions of the outside section of the piece (6) being formed, and forming a multi-ferrule (11) of selected length by cutting a given length from the piece (6) obtained as indicated above.