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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 1592. Отображено 100.
27-09-2012 дата публикации

Multi-diameter optical fiber link for transmitting unidirectional signals and eliminating signal deterioration

Номер: US20120243829A1
Автор: John Lynn
Принадлежит: Netgami System LLC

The present invention is to provide a multi-diameter optical fiber link, which includes a first cable and a second cable connected in series with the first cable through an adaptor (or adaptors) and is characterized in that a first optical fiber enclosed in the first cable has a smaller diameter than a second optical fiber enclosed in the second cable. Hence, when the first and second cables are connected in series, an end surface of the first optical fiber is easily and precisely aligned within an end surface of the second optical fiber, thus allowing the second optical fiber to receive all optical signals transmitted from the first optical fiber. Consequently, the optical signals pass through the first and second optical fibers in succession, and a unidirectional signal transmission is realized in the multi-diameter optical fiber link without signal deterioration which may otherwise result from misalignment of the optical fibers.

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Номер записи: 1
21-02-2013 дата публикации

Laser Sintering of Ceramic Fibers

Номер: US20130043606A1
Автор: Geoff Fair, HeeDong Lee, Hyun Jun Kim, Jonathan Goldstein
Принадлежит: US Air Force

A method and system for generating an optical fiber is provided. The method includes creating a green fiber consisting primarily of a ceramic material and sintering the green fiber with a laser by moving the green fiber through a beam of the laser to increase the density of the fiber after sintering. The system for creating a continuous optical fiber includes an extruder, a processing chamber and a laser. The extruder is configured to extrude a ceramic slurry as a green fiber. The processing chamber is configured to receive and process the green fiber. And, the laser is configured to direct a laser spot on the green fiber exiting the processing chamber to sinter the green fiber.

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Номер записи: 2
12-09-2013 дата публикации

OPTICAL WAVEGUIDE FORMING EPOXY RESIN COMPOSITION, CURABLE FILM FORMED FROM THE EPOXY RESIN COMPOSITION FOR FORMATION OF OPTICAL WAVEGUIDE, AND LIGHT TRANSMISSION FLEXIBLE PRINTED BOARD

Номер: US20130236149A1
Автор: Hirayama Tomoyuki
Принадлежит: NITTO DENKO CORPORATION

An excellent optical waveguide forming epoxy resin composition is provided, comprising: 2. An optical waveguide forming curable film comprising the optical waveguide forming epoxy resin composition as recited in .3. A light transmission flexible printed board claim 1 , comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'an optical waveguide including a clad and a core, at least one of the clad and core is formed by curing an optical waveguide forming epoxy resin composition as recited in .'}4. A light transmission flexible printed board claim 1 , comprising:{'claim-ref': {'@idref': 'CLM-00002', 'claim 2'}, 'an optical waveguide including a clad and a core, at least one of the clad and core is formed by curing an optical waveguide forming curable film as recited in .'} 1. Field of the InventionThe present invention relates to an optical waveguide forming epoxy resin composition to be used as a material for a cladding layer of an optical waveguide of an optical waveguide apparatus widely used for optical communications, optical information processing and other general optics.2. Description of the Related ArtOptical waveguide cladding materials for light transmission flexible printed boards are required to have high flexibility, low refractive index and excellent patternability. In designing a material satisfying such requirements, an aliphatic resin is typically selected for the lower refractive index, and a multi-functional aliphatic epoxy resin and a long-chain bi-functional aliphatic epoxy resin are blended as required to impart the material with excellent patternability (high sensitivity) and high flexibility. For a cladding material particularly required to have higher flexibility, therefore, the amount of the long-chain bi-functional aliphatic epoxy resin is inevitably increased, so that the cladding material tends to have a lower glass transition temperature Tg after being cured (see, for example, JP-A-2011-27903 and JP-A-2010-230944).In a roll-to- ...

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Номер записи: 3
19-09-2013 дата публикации

Athermal Photonic Waveguide With Refractive Index Tuning

Номер: US20130243383A1
Автор: Agarwal Anuradha M., Canciamilla Antonio, GRILLANDA Stefano, Kimerling Lionel C., MELLONI Andrea, Michel Jurgen, Morichetti Francesco, Raghunathan Vivek, Singh Vivek
Принадлежит:

In a photonic waveguide, there is provided an undercladding layer and a waveguide core, having a cross-sectional height and width, that is disposed on the undercladding layer. The waveguide core comprises a waveguide core material having a thermo-optic coefficient. A refractive index tuning cladding layer is disposed on top of the waveguide core. The refractive index tuning cladding layer comprises a refractive index tuning cladding material having an adjustable refractive index and an absorption length at a refractive index tuning radiation wavelength. A thermo-optic coefficient compensation cladding layer is disposed on top of the refractive index tuning cladding layer. The thermo-optic coefficient compensation cladding layer comprises a thermo-optic coefficient compensation material having a thermo-optic coefficient that is of opposite sign to the thermo-optic coefficient of the waveguide core material. The thermo-optic coefficient compensation cladding layer provides at least partial compensation for the waveguide core thermo-optic coefficient. 1. A photonic waveguide comprising:an undercladding layer;a waveguide core having a cross-sectional height and width disposed on the undercladding layer and comprising a waveguide core material having a thermo-optic coefficient;a refractive index tuning cladding layer disposed on top of the waveguide core and comprising a refractive index tuning cladding material having an adjustable refractive index and an absorption length at a refractive index tuning radiation wavelength; anda thermo-optic coefficient compensation cladding layer disposed on top of the refractive index tuning cladding layer and comprising a thermo-optic coefficient compensation material having a thermo-optic coefficient that is of opposite sign to the thermo-optic coefficient of the waveguide core material and that provides at least partial compensation for the waveguide core thermo-optic coefficient.2. The photonic waveguide of wherein the refractive ...

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Номер записи: 4
17-10-2013 дата публикации

Method of Making a Cable Strength Member

Номер: US20130273369A1
Автор: Chen Buo, Cogen Jeffrey M., Neubauer Anthony C., Zhou Huajun
Принадлежит:

Strength members for cable, particularly fiber optic cable, are made by a method comprising the steps of: A. Wetting a fiber, e.g., fiberglass fiber, with an aqueous polymeric dispersion to form a wetted fiber, the dispersion comprising: 1. At least one thermoplastic resin, e.g., a polyolefin; 2. At least one dispersing agent, e.g., a ethylene ethyl acrylate polymer; and 3. Water; B. Removing the water from the wetted fiber, and C. Consolidating the resin on the fiber with or without curing. 1. A method to produce a strength member for cable , the method comprising the steps of: 1. At least one thermoplastic resin;', '2. At least one dispersing agent; and', '3. Water;, 'A. Wetting a fiber with an aqueous polymeric dispersion to form a wetted fiber, the dispersion comprisingB. Removing the water from the wetted fiber, andC. Consolidating the resin on the fiber with or without curing.2. The method of in which steps (B) and (C) are performed sequentially.3. The method of in which steps (B) and (C) are performed simultaneously.4. The method of further comprising the step of applying one or more finish coatings to the fiber surface.5. The method of in which water is removed in step (B) by passing the wetted fiber through a drying oven operating at a temperature of 80° C. to 300° C.6. The method of in which the resin is consolidated in step (C) by passing the de-watered fiber of step (B) through a die heated to a temperature of at least 20° C. higher than the melting temperature of the polymer particle.7. The method of in which the dispersion has a viscosity of less than 800 mPa-s.8. The method of in which the resin is a polyolefin.9. The method of in which the dispersing agent is an ethylene/alpha-beta unsaturated carboxylic acid copolymer.10. The method of in which the dispersion comprises at least one of an additive and filler.11. The method of in which the dispersion comprises 0.1 wt % to 65.0 wt % of thermoplastic resin claim 1 , 0.25 wt % to 35 wt % of dispersing ...

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Номер записи: 5
28-11-2013 дата публикации

Apparatus for producing optical fiber, method for producing optical fiber, and optical fiber produced by method

Номер: US20130315553A1
Автор: Hitomi Omae, Masaki Takebe, Shinji Syuto, Tomoaki Mahiko, Yoshinori Funaki
Принадлежит: Daicel Corp

An apparatus produces an optical fiber by applying light to a photocurable composition and thereby curing the composition. The apparatus includes a nozzle for discharging the photocurable composition; a light irradiator for applying light to the fibrous photocurable composition discharged from the nozzle; and a controller that controls a light irradiation intensity at the nozzle orifice to 0.2 mW/cm 2 or less. The nozzle is preferably a double-tube nozzle having an outer tube; and an inner tube arranged inside the outer tube.

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Номер записи: 6
07-01-2021 дата публикации

IPG AND HEADER COMBINATION

Номер: US20210001114A1
Автор: II Erich W., Wolf
Принадлежит: Wavegate Corporation

A surgical lead is provided which includes a generally flexible polymeric panel incorporating a set of electrode arrays embedded in one side. The electrode arrays are connected to integrally formed leads which house conductors that connect the electrodes to a set of contacts. The contacts engage an IPG header. The leads incorporate an optical fiber which extends from the IPG header to a set of window portals in the flexible panel. Each of the fibers includes a side firing section adjacent the optical windows for transmission or reception of light. Optimally placed reflectors and heat shields are also provided. 1. A percutaneous lead for a pulse generator comprising:a flexible lead body, incorporating a stylet channel, and having an internal surface and an external surface, and having a distal end and a proximal end;an optical transmission section, having an optical fiber diffuser cavity, at the distal end;a set of electrodes, positioned adjacent the optical transmission section, fixed to the external surface;an anchor ring, positioned at the proximal end, fixed to the external surface;a set of contacts, adjacent to the anchor ring;a set of conductors incorporated into the flexible lead body;wherein at least one contact, of the set of contacts, is electrically connected to at least one electrode of the set of electrodes by a conductor of the set of conductors;an optical fiber, terminated in a radial light dispersion section, positioned in the stylet channel;wherein the radial light dispersion section is positioned in the optical fiber diffuser cavity; and,a cylindrical ferrule, having a frustoconical centering surface, positioned on the optical fiber.2. The percutaneous lead of wherein the anchor ring is positioned proximal to the set of contacts.3. The percutaneous lead of further comprising:a low friction surface adjacent the internal surface.4. The percutaneous lead of further comprising:a low friction surface adjacent the external surface.5. The percutaneous lead ...

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Номер записи: 7
07-01-2021 дата публикации

SURGICAL ELECTRODE AND LEAD FOR USE WITH IMPLANTED PULSE GENERATOR AND METHOD OF USE

Номер: US20210001115A1
Автор: II Erich W., Wolf
Принадлежит: Wavegate Corporation

An implantable pulse generator is provided comprising a non-metallic shell adjacent a header. The header abuts an optical window in the shell. The header aligns a series of surgical or percutaneous leads with the optical window. The leads incorporate optical fibers, electrodes and contacts which distribute stimulation signals. Behind the optical window, a set of optical devices is provided which transmit or receive light from the fibers. Signal processors are provided to interpret the signals from the optical fibers, and to mitigate a continuous inductive charging function. 1. A surgical lead comprising:a flexible panel;a set of electrode arrays imbedded in the flexible panel;a set of leads integrally formed with the flexible panel;a set of lumens;at least one lumen of a set of lumens resident in at least one lead of the set of leads;a set of conductors in the at least one lead of the set of leads;a set of contacts, attached to the at least one lead of the set of leads;at least one conductor of the set of conductors, connected between a contact of the set of contacts and an electrode array of the set of electrode arrays;a set of window portals, in the flexible panel, adjacent to and distal from the set of electrode arrays;a set of optical fibers;a set of side firing sections;at least one of optical fiber of the set of optical fibers having at least one side firing section of the set of side firing sections;at least one optical fiber of the set of optical fibers resident in the at least one lumen of the set of lumens;the at least one side firing section positioned adjacent a window portal of the set of window portals;a set of ferrules; and,at least one ferrule, of the set of ferrules, positioned on the at least one optical fiber of the set of optical fibers.2. The surgical lead of further comprising:a set of reflectors; and,at least one reflector, of the set of reflectors, adjacent to the at least one side firing section of the set of side firing sections.3. The ...

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Номер записи: 8
07-01-2016 дата публикации

DIRECT WRITABLE AND ERASABLE WAVEGUIDES IN OPTOELECTRONIC SYSTEMS

Номер: US20160004010A1
Автор: Deurksen Gary Lynn, Miller Seth Adrian
Принадлежит:

Technologies are generally described to form a waveguide in a polymer multilayer comprising a first and second polymer layer. The waveguide may be formed by directing light beams toward the polymer multilayer to form first and second cladding regions in the polymer multilayer, where the first and second cladding regions comprise a mixture of the first and second polymer layers. The first and second cladding regions may define a third cladding region and a waveguide core therebetween, where the third cladding region comprises a portion of the second polymer layer, and the waveguide core comprises a portion of the first polymer layer. In some examples, the polymer multilayer may be formed on a substrate such that the waveguide is formed on the substrate. Additionally, the waveguide may be formed temporarily to test components of an optoelectronic system and then erased by heating the polymer multilayer to destroy the waveguide core, or the waveguide may be formed as a default optical interconnection configuration that may be changed to alter the functional mode of the backplane in the manner of a jumper setting. 1. A method to form a waveguide , the method comprising:providing a polymer multilayer, the polymer multilayer comprising a first polymer layer and a second polymer layer,the first polymer layer having a first refractive index,the second polymer layer having a second refractive index, the second refractive index being lower than the first refractive index;writing a first cladding region by directing a first light beam onto the polymer multilayer to induce mixing of the first and second polymer layers within the first cladding region; andwriting a second cladding region by directing a second light beam on the polymer multilayer to induce mixing of the first and second polymer layers within the second cladding region,such that the waveguide is formed, the waveguide having a waveguide core comprising a portion of the first polymer layer located between the first ...

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Номер записи: 9
07-01-2016 дата публикации

OPTICAL FIBER SEISMIC SENSING CABLE

Номер: US20160004025A1
Автор: Jost Stefan, Ly Heng, Pedder Jason, Petersen Jacob Ulrik
Принадлежит: OFS FITEL, LLC

Described is an improved optical fiber cable specially adapted for seismic sensing. Compared with standard optical fiber cable, this improved optical fiber cable is reduced in size, lighter, and more flexible. These characteristics make the optical fiber cable more robust for reusable applications. Due to modifications in the design of the optical fibers, the size and weight of the seismic sensing cable may be substantially reduced. That allows longer lengths of seismic sensing cable, and more seismic sensor boxes, to be reeled on a given sized reel, and makes deployment of the seismic sensing cable faster, easier, and less expensive. A preferred cable design for reaching these objectives comprises multiple optical fibers, of a design just described, encased in a dual-layer optical fiber buffer encasement of acrylate resin. 1. A seismic optical fiber cable comprising:at least two optical fibers surrounded by a first strength layer, the optical fibers comprising a core, a cladding and a polymer coating, wherein the core and the cladding have a combined diameter in the range of 75-85 micrometers and the overall diameter of the optical fiber is less than 170 microns,a polymer jacket surrounding the first strength layer,a second strength layer surrounding the first polymer jacket, anda second polymer jacket surrounding the second strength layer.2. The seismic optical fiber cable of claim 1 , wherein at least one strength layer comprises a wrap of reinforcing yarns.3. The seismic optical fiber cable of claim 1 , wherein at least one strength layer comprises a wrap of reinforcing tape.4. A seismic optical fiber cable comprising: i. at least two optical fibers encased in a polymer matrix, the optical fibers comprising a core, a cladding and a polymer coating, wherein the core and the cladding have a combined diameter in the range of 75-85 micrometers and the overall diameter of the optical fiber is less than 170 microns, the polymer matrix having a first modulus,', 'ii. a ...

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Номер записи: 10
04-01-2018 дата публикации

Optical device and optical apparatus having the same

Номер: US20180003904A1
Автор: Tomohiko Ishibashi
Принадлежит: Canon Inc

An optical device including first and second optical elements formed of mutually different materials, and a bonding member bonding the first and second optical elements to each other, wherein the following conditional expression is satisfied: 0.14<Log( te/tc )×Log( E 1× E 2/ Ec 2 )<5.0 where tc is a thickness in an optical axis direction of the bonding member on an optical axis, te is a thickness in the optical axis direction of the bonding member in a maximum diameter of interfaces between the first and second optical elements and the bonding member, and E1, E2, and Ec are respective Young's moduli of the first and second optical elements and the bonding member.

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Номер записи: 11
02-01-2020 дата публикации

Plastic optical fiber, plastic optical fiber cable, wire harness and vehicle

Номер: US20200003932A1
Автор: Hideki Kihara, Noboru Fujikura
Принадлежит: Mitsubishi Chemical Corp

There is provided a plastic optical fiber including a core and at least one layer of a clad formed on an outer circumferential surface of the core, wherein a transmission band is 100 MHz or wider, as measured under conditions of a wavelength of 650 nm and a launch NA=0.65; and a transmission loss is 350 dB/km or less, as measured under conditions of a wavelength of 650 nm and a launch NA=0.1, after exposure to an environment of a temperature of 105° C. for 1000 hours.

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Номер записи: 12
12-01-2017 дата публикации

POLYMER COATED OPTICAL FIBER

Номер: US20170010412A1
Автор: Briggs William, Demetz Fred, HULL John, Jalilian Seyed Ehsan, Racosky Michael
Принадлежит:

Coated optical fibers and uses of such fibers as sensors in high temperature and/or high pressure environments. The coated optical fiber has improved sensing properties at elevated pressure and/or temperature, such as enhanced acoustic sensitivity and/or a reduced loss in acoustic sensitivity. The use of the coated optical fibers in various sensing applications that require operation under elevated pressure and/or temperature, such as, acoustic sensors for various geological, security, military, aerospace, marine, and oil and gas applications are also provided. 1. A coated optical fiber comprising:an optical fiber, anda polymeric coating over the optical fiber, the polymeric coating comprising a thermoset, thermoplastic or UV cured elastomer having a Poisson's Ratio of between about 0.350 and about 0.4995, and a shear modulus of between about 20 psi and about 2900 psi.2. The coated optical fiber according to claim 1 , the thermoset claim 1 , thermoplastic or UV cured elastomer further having a Shore A hardness of between about 20 and about 95.3. The coated optical fiber according to claim 1 , wherein the Poisson's Ratio is less than about 0.490.4. The coated optical fiber according to claim 1 , wherein the polymeric coating comprises a thermoset elastomer that is stable at operating temperatures up to about 300° C.5. The coated optical fiber according to claim 4 , wherein the thermoset elastomer is a silicone.6. The coated optical fiber according to claim 1 , wherein the polymeric coating comprises a thermoplastic or UV cured elastomer that is stable at operating temperatures up to about 150° C.7. The coated optical fiber according to claim 6 , wherein the thermoplastic elastomer is a polyester-polyether copolymer.8. The coated optical fiber according to claim 7 , wherein the thermoplastic elastomer is Hytrel® 3078.9. The coated optical fiber according to claim 6 , wherein the UV cured elastomer is an aliphatic urethane acrylate claim 6 , aromatic urethane acrylate ...

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Номер записи: 13
09-01-2020 дата публикации

OPTICAL FIBER MANUFACTURING APPARATUS AND METHOD OF STARTING OPTICAL FIBER MANUFACTURING APPARATUS

Номер: US20200012038A1
Автор: Suzuki Takashi
Принадлежит: FURUKAWA ELECTRIC CO., LTD.

An optical fiber manufacturing apparatus includes a heating furnace configured to heat and melt an optical fiber preform; a pulling mechanism configured to adjust an outer diameter of a glass optical fiber by drawing out the glass optical fiber from the optical fiber preform melted through the heating by the heating furnace, and to draw the glass optical fiber that has been adjusted in outer diameter; a coating mechanism configured to apply a predetermined resin on an outer circumference of the glass optical fiber that has been adjusted in outer diameter; and a transport mechanism configured to returnably retract the coating mechanism from a passage route of the glass optical fiber. 1. An optical fiber manufacturing apparatus , comprising:a heating furnace configured to thermally melt an optical fiber preform;a pulling mechanism configured to adjust an outer diameter of a glass optical fiber by drawing out the glass optical fiber from the optical fiber preform melted through the heating by the heating furnace, and to draw the glass optical fiber that has been adjusted in outer diameter;a coating mechanism configured to apply a predetermined resin on an outer circumference of the glass optical fiber that has been adjusted in outer diameter; anda transport mechanism configured to returnably retract the coating mechanism from a passage route of the glass optical fiber.2. The optical fiber manufacturing apparatus according to claim 1 , further comprising a measuring device configured to measure the outer diameter of the glass optical fiber between the heating furnace and the coating mechanism.3. The optical fiber manufacturing apparatus according to claim 2 , further comprising a hardware processor configured to control the pulling mechanism claim 2 , based on the outer diameter of the glass optical fiber measured by the measuring device.4. The optical fiber manufacturing apparatus according to claim 3 , whereinthe measuring device further measures a passage position of ...

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Номер записи: 14
09-01-2020 дата публикации

Optical cable with channel structure

Номер: US20200012061A1
Автор: Chester Kmiec, Mohamed Esseghir, Wenyi Huang
Принадлежит: Dow Global Technologies LLC

The present disclosure provides an optical cable. In an embodiment, the optical cable includes an elongated member comprising a matrix material and a plurality of channels extending through the matrix material. The optical cable also includes at least one optical fiber extending through at least one channel.

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Номер записи: 15
15-01-2015 дата публикации

Multi-core optical fiber tape

Номер: US20150016791A1
Автор: Eisuke Sasaoka, Takuji Nagashima, Toshiki Taru
Принадлежит: Sumitomo Electric Industries Ltd

A multi-core optical fiber ribbon easily optically connected to another optical component is provided. A multi-core optical fiber ribbon 1 includes a plurality of multi-core optical fibers 10 arranged parallel to one another and a common resin 20, with which the plurality of multi-core optical fibers 10 are collectively coated. A core arrangement direction in which plurality of cores in each of the plurality of multi-core optical fibers 10 are arranged is parallel to or perpendicular to the fiber arrangement direction in which the plurality of multi-core optical fibers 10 are arranged at least at both ends of the multi-core optical fiber ribbon 1.

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Номер записи: 16
21-01-2021 дата публикации

SPOT SIZE CONVERTER AND MANUFACTURING METHOD OF THE SAME

Номер: US20210018682A1
Автор: TANAKA Hajime, WATANABE Masataka
Принадлежит: Sumitomo Electric Industries, Ltd.

A spot size converter includes a first waveguide including a first core layer, the first waveguide propagating light; and a second waveguide including a second core layer and provided on the first waveguide, the second waveguide propagating light. The first waveguide and the second waveguide extend in a waveguide direction. A first region and a second region are provided continuously along the waveguide direction. In the first region, the second waveguide has a tapered shape in a cross section which becomes narrower as going up away from the first waveguide. An angle between a side surface of the second waveguide and a bottom surface of the second waveguide is 60° or less. 1. A spot size converter comprising:a first waveguide including a first core layer, the first waveguide propagating light; anda second waveguide including a second core layer and provided on the first waveguide, the second waveguide propagating light,whereinthe first waveguide and the second waveguide extend in a waveguide direction,a first region and a second region are provided continuously along the waveguide direction,in the first region, the second waveguide has a tapered shape in a cross section which becomes narrower as going up away from the first waveguide, andan angle between a side surface of the second waveguide and a bottom surface of the second waveguide is 60° or less.2. The spot size converter according to claim 1 , whereinthe second waveguide includes a first cladding layer provided between the first core layer and the second core layer, andthe second core layer and the first cladding layer are included in the tapered shape in the cross section.3. The spot size converter according to claim 1 , whereinthe second waveguide includes a second cladding layer provided on the second core layer, andthe second cladding layer in the first region is thinner than the second cladding layer in the second region, or the second cladding layer is not provided in the first region.4. The spot size ...

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Номер записи: 17
24-01-2019 дата публикации

OPTICAL WAVEGUIDE

Номер: US20190025504A1
Автор: Okamoto Norihiko, Tsujita Yuichi
Принадлежит: NITTO DENKO CORPORATION

The present disclosure provides an optical waveguide capable of enhancing the suppression of crosstalk. This optical waveguide includes: under claddings; cores for light propagation arranged in side-by-side relation on surfaces of the respective under claddings; over claddings covering the cores; and a light absorbing part provided between adjacent ones of the cores and adjacent to light exit member connecting portions for connection to light exit members, the light exit member connecting portions being disposed in first end portions of the adjacent cores, the light absorbing part being in non-contacting relationship with the cores. The light absorbing part contains a light absorbing agent having an ability to absorb light exiting the light exit members. The optical waveguide is produced on a surface of a substrate. 1. An optical waveguide comprising:a plurality of cores for light propagation arranged in side-by-side relation; anda light absorbing part provided between adjacent ones of the cores for light propagation, the light absorbing part being in non-contacting relationship with the cores,wherein each of the cores has a first end portion serving as a light exit member connecting portion for connection to a light exit member, andwherein the light absorbing part is positioned adjacent to the light exit member connecting portions disposed in the first end portions of the adjacent cores, and contains a light absorbing agent having an ability to absorb light exiting the light exit members.2. The optical waveguide according to claim 1 ,wherein each of the cores has a second end portion serving as a light entrance member connecting portion for connection to a light entrance member, andwherein the light absorbing part is positioned also adjacent to the light entrance member connecting portions disposed in the second end portions of the adjacent cores.3. The optical waveguide according to claim 1 , further comprising a cladding surrounding the cores between the light ...

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Номер записи: 18
28-01-2021 дата публикации

OPTICAL RECEPTACLE AND OPTICAL TRANSCEIVER

Номер: US20210026080A1
Автор: AGATSUMA Hirotsugu, HAKOZAKI Satoshi, KANEYUKI Satoshi, SATO Hiroki, SUZUKI Arato, TOMINAGA Kohei
Принадлежит:

An optical receptacle includes a fiber stub, a block, and a first elastic member. The fiber stub includes an optical fiber, and a ferrule provided on one end side of the optical fiber. The block is separated from the ferrule and has one end surface, an other end surface, and a through-hole extending from the one end surface to the other end surface. A portion of the optical fiber protrudes from the ferrule and is inserted into the through-hole. The first elastic member fixes the optical fiber in the through-hole. The portion of the optical fiber includes first to third portions. The second portion is provided between the first portion and the third portion. A core diameter at the first portion is smaller than a core diameter at the third portion. A core diameter at the second portion increases from the first portion toward the third portion. 1. An optical receptacle , comprising: an optical fiber including a core and cladding, the core being for transmitting light, and', 'a ferrule provided on one end side of the optical fiber;, 'a fiber stub including'}a block separated from the ferrule, the block having one end surface, an other end surface on a side opposite to the one end surface, and a through-hole extending from the one end surface to the other end surface, a portion of the optical fiber protruding from the ferrule and being inserted into the through-hole from the one end surface side; anda first elastic member fixing the optical fiber in the through-hole,the portion of the optical fiber protruding from the ferrule including a first portion, a second portion, and a third portion,the first portion being provided on the other end surface side of the third portion,the second portion being provided between the first portion and the third portion,a core diameter at the first portion being smaller than a core diameter at the third portion,a core diameter at the second portion increasing from the first portion toward the third portion,the first elastic member being ...

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Номер записи: 19
02-02-2017 дата публикации

Writing of high mechanical strength fiber bragg gratings using ultrafast pulses and a phase mask

Номер: US20170031090A1
Автор: Francois Trepanier, Julien Carrier, Martin Bernier, Real Vallee
Принадлежит: UNIVERSITE LAVAL

Methods and systems for writing a Bragg grating along a grating region of an optical fiber through a polymer coating of the optical fiber are provided. A light beam of ultrafast optical pulses is impinged on the grating region, the ultrafast optical pulses being characterised by writing wavelength at the grating region to which the polymer coating is substantially transparent The light beam is diffracted through a phase mask so as to form an interference pattern defining the Bragg grating at the grating region of the optical fiber. The light beam is also focussed such that the intensity of the optical pulses is below a damage threshold within the polymer coating, and above an FBG inscription threshold within the grating region of the fiber. Optical fiber having Bragg gratings and improved mechanical are also provided.

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Номер записи: 20
05-02-2015 дата публикации

Single mode propagation in fibers and rods with large leakage channels

Номер: US20150036703A1
Автор: Liang Dong, Martin E. Fermann, William Wong
Принадлежит: IMRA America Inc

Various embodiments include large cores fibers that can propagate few modes or a single mode while introducing loss to higher order modes. Some of these fibers are holey fibers that comprise cladding features such as air-holes. Additional embodiments described herein include holey rods. The rods and fibers may be used in many optical systems including optical amplification systems, lasers, short pulse generators, Q-switched lasers, etc. and may be used for example for micromachining.

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Номер записи: 21
04-02-2021 дата публикации

PLASTIC WAVELENGTH SHIFTING FIBER AND A METHOD OF MAKING THE SAME

Номер: US20210033783A1
Автор: Buzniak Jan J.
Принадлежит:

A wavelength shifting fiber and method of making the same is disclosed. A wavelength shifting fiber can include a plastic core and a coating surrounding the plastic core. The numerical aperture for the wavelength shifting fiber can be at least about 0.53. A method of making a wavelength shifting fiber can include heating and drawing a plastic core precursor to form a plastic core, coating the plastic core with a liquid coating, and curing the liquid coating around the plastic core to form a wavelength shifting fiber. 1. A wavelength shifting fiber , comprising:a plastic core; anda cladding surrounding the plastic core, wherein a numerical aperture for the wavelength shifting fiber is at least about 0.53.2. The wavelength shifting fiber of claim 1 , wherein the numerical aperture is defined by the formula NA=√{square root over ((n)−(n))} claim 1 , wherein nis a refractive index of the plastic core and nis a refractive index of the cladding.3. The wavelength shifting fiber of claim 1 , wherein the numerical aperture for the wavelength shifting fiber is at least about 0.6.4. The wavelength shifting fiber of claim 1 , wherein the numerical aperture for the wavelength shifting fiber is at least about 0.7.5. The wavelength shifting fiber of claim 1 , wherein the cladding has a thickness of at least 3 μm.6. The wavelength shifting fiber of claim 1 , wherein the cladding surrounding the plastic core is a UV cured cladding.7. The wavelength shifting fiber of claim 6 , wherein the cladding is in direct contact with the core without any intervening substances in between.8. The wavelength shifting fiber of claim 1 , wherein the plastic core comprises a material selected from the group consisting of polystyrene (PS) claim 1 , polyvinyltoluene (PVT) claim 1 , polymethyl methacrylate (PMMA) claim 1 , polycarbonate claim 1 , and any combination thereof.9. The wavelength shifting fiber of claim 8 , wherein the plastic core comprises a fluorescent dopant.10. The wavelength shifting ...

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Номер записи: 22
08-02-2018 дата публикации

Thermally-Drawn Fiber Including Devices

Номер: US20180039036A1
Автор: Fink Yoel, Rein Michael
Принадлежит: Massachusetts Institute of Technology

There is provided herein a fiber including a fiber body with a fiber body material having a longitudinal axis along a fiber body length. A plurality of devices is disposed as a linear sequence of devices within the fiber body. Each device includes at least one electrical contact pad. At least one electrical conductor is disposed within the fiber body. The electrical conductor is electrically connected to an electrical contact pad of devices in the plurality of devices. A weavable device includes at least one device material arranged in a planar device configuration and connected to an electrical contact pad. An electrically insulating, mechanically flexible fiber body material encapsulates the planar device configuration and contact pad and has a fiber body length greater than 10 m. An electrical conductor is electrically connected to a device contact pad and extends the fiber body length. 1. A fiber comprising:a fiber body comprising a fiber body material and having a longitudinal axis along a fiber body length;a plurality of devices disposed as a linear sequence of devices within the fiber body along at least a portion of the fiber body length, each device including at least one electrical contact pad; andat least one electrical conductor disposed within the fiber body along at least a portion of the fiber body length, the electrical conductor being electrically connected to an electrical contact pad of devices in the plurality of devices within the fiber body.2. The fiber of wherein the fiber body material comprises a polymeric claim 1 , electrically insulating material.3. The fiber of wherein the fiber body material includes at least one material selected from the group consisting of a thermoplastic material claim 1 , a polyimide material claim 1 , a thermoset material claim 1 , a glass material claim 1 , a polysulfone material claim 1 , a polycarbonate material claim 1 , a polymethyl methacrylate material claim 1 , a polyethylene material claim 1 , a polyether ...

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Номер записи: 23
15-02-2018 дата публикации

COATED OPTICAL FIBRES HAVING IMPROVED FEATURES

Номер: US20180045884A1
Автор: Mizrahi David, SOKOLOWA Angelika, ZILBERMAN Alexander
Принадлежит:

A waveguide for high efficiency transmission of high energy light useful in ablation procedures at predetermined bandwidths over predetermined distances comprising: an optical fiber core; a silanization agent; layered cladding surrounding the optical fiber core comprising: a first thin metal layer comprising at least two types of metals the first thin metal layer covalently bonded to the core and a second thin metal layer bonded to the second metal layer, and a catalyst component; wherein the silanization agent comprising organofunctional alkoxysilane molecule, such as 3-aminopropyltriethoxysilane (APTS), is a self supporting bridge between the surface of the optical fiber and the first metal layer; the first metal layer is uniformly chemisorbed onto the surface of the optical fiber by means of covalent Si—O—Si bonds with the optical fiber; further wherein the catalyst component derived from an activation solution for enhancing the layered cladding upon the optical fiber. 157-. (canceled)58. A waveguide for high efficiency transmission of high energy light for ablation procedures at predetermined bandwidths over predetermined distances , comprising:a. an optical fibre core;b. an alkoxysilane bridge derived from 3-aminopropyltriethoxy-silane, immobilized onto the optical fibre core via covalent Si—O—Si bonds with said optical fibre core, and capable of binding metals with its amino functional group; and i. a first thin metal layer comprising at least two types of metals, said first thin metal layer of up to 3 microns in thickness bound to said core; and', 'ii. a second thin metal layer of up to 3 microns in thickness bound to said first metal layer;, 'c. a metal-layered cladding bound to the alkoxysilane bridge, thereby coating said optical fibre core with metals, said metal-layered cladding comprisingwherein (i) said layered cladding has a thickness between 0.25 to about 5 micron, and (ii) said waveguide has a bending radius in a range of 8 mm to 12 mm without ...

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Номер записи: 24
19-02-2015 дата публикации

FIBER OPTIC SENSING APPARATUS AND METHOD FOR SENSING PARAMETERS INVOLVING DIFFERENT PARAMETER MODALITIES

Номер: US20150049981A1
Автор: Balasubramaniam Mahadevan NMN, Dekate Sachin Narahari, Koste Glen Peter, Rubinsztajn Slawomir, Soni Sunilkumar Onkarnath, Vejjupalle Subramanyam Anurag Kasyap
Принадлежит: GENERAL ELECTRIC COMPANY

An optical-based sensing apparatus and method are provided. A sensing apparatus () may include a tube (). An optical fiber () may be encased in the tube. A buffering layer () may be interposed between the optical fiber and the tube. The buffering layer and/or the tube may be selectively configured to form along a length of the apparatus a plurality of optical sensing zones () spatially arranged to sense parameters involving different parameter modalities. 1. In an optical-based sensing apparatus , a method comprising:providing an optical fiber;disposing a buffering layer around the optical fiber; andselectively configuring the buffering layer to form a plurality of optical sensing zones spatially arranged along a length of the optical sensing apparatus to sense parameters comprising different parameter modalities.2. The method of claim 1 , wherein the configuring of the buffering layer comprises varying along the length of the optical sensing apparatus at least one property of the buffering layer to tune a sensitivity of a respective sensing zone to a respective parameter.3. The method of claim 2 , wherein the at least one property of the buffering layer is selected from the group consisting of a property of a buffering layer material claim 2 , a geometry of the buffering layer claim 2 , and a combination of said properties.4. The method of claim 2 , wherein the buffering layer comprises a gel or resin claim 2 , and the method further comprises irradiating the gel or resin to meet a desired value for said at least one property.5. The method of claim 1 , wherein the disposing of the buffering layer comprises selectively injecting at least one resin to form at least one of the plurality of optical sensing zones.6. The method of claim 5 , wherein the injecting of the at least one resin comprises injecting at least two reactive resins to form the at least one optical sensing zone.7. The method of claim 1 , wherein the disposing of the buffering layer comprises ...

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Номер записи: 25
03-03-2022 дата публикации

WAVEGUIDE WITH TRAPEZOIDAL CORE

Номер: US20220066092A1
Автор: Gallagher Michael K., Joo Jake, Kondo Masaki, Ryley James F., Shen Yi, WILLIAMSON Curtis, Zhang Zhebin
Принадлежит:

Provided is an optical waveguide comprising a core surrounded by a cladding, wherein the core is in the shape of a trapezoid with sidewall angles between 60° and 85° and an opto-electronic circuit comprising the optical waveguide. Operational characteristics of the optical waveguide are shown to be superior to those of incumbent devices.

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Номер записи: 26
22-02-2018 дата публикации

POLYMERIC WAVEGUIDE WITH SINGLE DOPANT

Номер: US20180051161A1
Автор: Bonefacino Julien, Cheng Xin, Tam Hwa-Yaw
Принадлежит:

The present invention relates to the use of dopants for polymer optical fibres or polymer waveguides containing the dopants, sensors in the polymer optical fibres or polymer waveguides, which may be used in the biomedical industry for the measurement of different physiological and physical variables. 1. A polymer optical fibre comprising a single dopant material permitting both refractive index increase and photosensitivity enhancement for Fibre Bragg grating (FBG) fabrication , wherein the single dopant material comprises at least two phenyl rings linked by a disulfide bridge.23.-. (canceled)4. A polymer optical fibre as claimed in claim 1 , wherein the one or more of the phenyl rings may be functionalized with one or more groups selected from alkyl claim 1 , substituted alkyl claim 1 , alkenyl claim 1 , substituted alkenyl claim 1 , alkynyl claim 1 , substituted alkynyl claim 1 , phenyl claim 1 , substituted phenyl claim 1 , aryl claim 1 , substituted aryl claim 1 , heteroaryl claim 1 , substituted heteroaryl claim 1 , halo claim 1 , hydroxyl claim 1 , nitro claim 1 , amino claim 1 , alkoxy claim 1 , substituted alkoxy groups claim 1 , or carboxylic acid groups claim 1 , or combinations of any two or more thereof.6. A polymer optical fibre as claimed in claim 5 , wherein the single dopant material is diphenyl disulfide.7. A polymer optical fibre as claimed in claim 1 , comprising alternating integrated light source sections and sensing sections.8. A polymer optical fibre as claimed in claim 7 , wherein the integrated light source sections are doped with a laser dye and the sensing sections are doped with the single dopant material.9. A polymer optical fibre as claimed in claim 1 , wherein between about 0.1 to about 10 mol % of the single dopant material is employed.10. A sensor system comprising a polymer optical fibre according to .11. A sensor system as claimed in claim 10 , wherein the sensor system is a medical sensor system.12. A method of measuring one or ...

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Номер записи: 27
25-02-2016 дата публикации

Optical fiber cable

Номер: US20160054532A1
Автор: Kouji Asano, Tsuyoshi Kimura, Yoshihiro Tsukamoto
Принадлежит: Mitsubishi Rayon Co Ltd

An optical fiber cable is formed with an optical fiber and a coating layer made up of at least one layer provided on the outer periphery of the optical fiber. The material for forming the coating layer is made of a halogen-free resin composition containing polyolefin resin (A) and melt tension enhancer (B).

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Номер записи: 28
13-02-2020 дата публикации

Refractory anchor device and system

Номер: US20200049408A1
Автор: Anthony Stephen Harris, Eduardo Fernando D&#39;Oracio De Almeida
Принадлежит: BRAND SHARED SERVICES LLC

Refractory anchoring devices include a main body and a mounting feature for mounting to a thermal vessel. The main body has the shape of two end-to-end Y's forming a central segment, two branch segments extending from each end of the central segment, and an extension segment extending from each of the four branch segments, to collectively form four unenclosed cell openings that are each semi-hexagonal in shape. Some embodiments include four reinforcement segments with each one extending into a respective cell opening, four voids with each one extending through respective adjacent branch and extension segments, an underbody gap formed under the central segment for refractory interlinking between cell openings, and/or a single stud-welding stud for the mounting feature. Refractory anchoring systems and methods include an array of the refractory anchoring devices arranged and mounted so that the unenclosed semi-hexagonal cell openings of adjacent anchoring devices cooperatively form substantially hexagonal cells.

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Номер записи: 29
13-02-2020 дата публикации

AMBIENT FIBER LIGHTING SYSTEMS AND METHODS

Номер: US20200049874A1
Автор: Eckardt Dirk
Принадлежит: LEONI Kabel GmbH

Optical fiber systems and related methods are provided. The optical fiber systems include at least one optical fiber and at least one light source. The optical fibers include a core, a cladding, and a jacket. Scattering structures are dispersed within the cladding. The optical fibers are configured to scatter light by way of the scattering structures away from the core to emit radial lighting along the length of the optical fibers. 1. An optical fiber , comprising:a central glass core;a polymer cladding disposed on and surrounding the core; anda polymer jacket disposed on and surrounding the cladding, a polymer substrate; and', 'a plurality of light scatter structures; and, 'wherein the cladding compriseswherein the cladding is configured to uniformly scatter light radially along a length of the optical fiber.2. The optical fiber of claim 1 ,wherein the central glass core comprises fused silica.3. The optical fiber of claim 1 ,wherein the central glass core has a diameter that ranges from approximately 100 μm to 1500 μm.4. The optical fiber of claim 1 ,wherein the polymer substrate comprises a transparent or translucent polymer; and aluminum oxide particles;', 'titanium oxide particles;', 'silica particles; or', 'combinations thereof., 'wherein the plurality of light scatter structures comprises5. The optical fiber of claim 4 ,wherein the translucent polymer of the polymer substrate comprises an acrylic polymer.6. The optical fiber of claim 1 ,wherein the cladding has a thickness that ranges from approximately 20 μm to 1700 μm.7. The optical fiber of claim 4 ,wherein the aluminum oxide particles are homogenously dispersed within the polymer substrate along the length of the optical fiber.8. The optical fiber of claim 1 ,wherein the polymer jacket comprises a translucent polymer.9. The optical fiber of claim 1 ,wherein the jacket has a thickness that ranges from approximately 300 μm to 5 mm.10. The optical fiber of claim 8 , ethylene tetrafluoroethylene;', 'nylon;', ...

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Номер записи: 30
15-05-2014 дата публикации

COMPOSITION FOR JACKETING OPTICAL FIBER AND OPTICAL FIBER CABLE

Номер: US20140133812A1
Автор: Akihara Rie, Asano Kouji, Kimura Tsuyoshi, Tsukamoto Yoshihiro, Yoshioka Akira
Принадлежит: MITSUBISHI RAYON CO., LTD.

A composition for jacketing an optical fiber including a modified PPE resin containing a polyphenylene ether resin and a thermoplastic resin compatible with the polyphenylene ether resin, and a non halogen-based flame retardant, in which a nitrogen compound is included as the non halogen-based flame retardant and the content of nitrogen element in the composition is in the range of 100000 to 300000 ppm as measured by an elementary analysis. 1. A composition for jacketing an optical fiber , the composition comprising a modified PPE resin including a polyphenylene ether resin and a thermoplastic resin compatible with the polyphenylene ether resin , and a non halogen-based flame retardant ,wherein the composition includes a nitrogen compound as the non halogen-based flame retardant and a content of nitrogen element in the composition is in the range of 100000 to 300000 ppm as measured by an elementary analysis.2. The composition according to claim 1 , wherein the nitrogen compound is at least one selected from the group consisting of a melamine-based compound claim 1 , a triazine-based compound claim 1 , a guanidine-based compound claim 1 , a urea-based compound claim 1 , and a tetrazole-based compound.3. The composition according to claim 1 , wherein a content ratio of the nitrogen compound is in the range of 5 to 60% by mass relative to the modified PPE resin.4. The composition according to claim 1 , wherein the non halogen-based flame retardant further includes a phosphorus compound and a content of phosphorus element in the composition is in the range of 10000 to 80000 ppm as measured by an elementary analysis.5. The composition according to claim 4 , wherein the phosphorus compound is at least one selected from the group consisting of phosphoric acid ester claim 4 , condensed phosphoric acid ester claim 4 , phosphoric acid salt claim 4 , condensed phosphoric acid salt claim 4 , phosphoric acid amide claim 4 , and condensed phosphoric acid amide.6. The composition ...

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Номер записи: 31
20-02-2020 дата публикации

Epoxy-Free Plastic Optical Fiber Splice Design and Fabrication Process

Номер: US20200057203A1
Автор: Dennis G. Koshinz, Eric Y. Chan, Kim Quan Anh Nguyen, Tuong K. Truong
Принадлежит: Boeing Co

An epoxy-free, high-durability and low-cost plastic optical fiber splice design and fabrication process which meets commercial airplane environmental requirements. The splice design: (1) does not require the use of epoxy to join the end faces of two plastic optical fibers together; (2) incorporates double-crimp rings to provide highly durable pull force for the plastic optical fibers that are joined together; (3) resolves any vibration problem at the plastic optical fiber end faces using a miniature stop inside a splice alignment sleeve; and (4) incorporates a splice alignment sleeve that can be mass produced using precision molding or three-dimensional printing processes.

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Номер записи: 32
20-02-2020 дата публикации

COAXIAL WIRE AND OPTICAL FIBER TRACE VIA HYBRID STRUCTURES AND METHODS TO MANUFACTURE

Номер: US20200057219A1
Автор: Buvid Daniel J., Campbell Eric J., Czaplewski Sarah K., Steffen Christopher W.
Принадлежит:

A method of forming a coaxial wire that includes providing a sacrificial trace structure using an additive forming method, the sacrificial trace structure having a geometry for the coaxial wire, and forming a continuous seed metal layer on the sacrificial trace structure. The sacrificial trace structure may be removed and a first interconnect metal layer may be formed on the continuous seed layer. An electrically insulative layer may then be formed on the first interconnect metal layer, and a second interconnect metal layer is formed on the electrically insulative layer. Thereafter, a dielectric material is formed on the second interconnect metal layer to encapsulate a majority of an assembly of the first interconnect metal layer, electrically insulative layer and second interconnect metal layer that provides said coaxial wire. Ends of the coaxial wire may be exposed through opposing surfaces of the dielectric material to provide that the coaxial wire extends through that dielectric material. 1. A wiring structure comprising:a dielectric base material; andan interconnect structure including at least one coaxial wire extending through said dielectric base material from a first side of the dielectric base material to an opposing second side of the dielectric base material, wherein at least one coaxial wire extends from the first side of the dielectric base material to the second side of said dielectric base material has at least one angled portion.2. The wiring structure of claim 1 , wherein said electrically insulating layer comprises a dielectric comprised of an oxide claim 1 , nitride or oxynitride material.3. The wiring of claim 1 , wherein said electrically insulating layer comprises a polymer selected from the group consisting of parylene claim 1 , organosiloxanes claim 1 , epoxies claim 1 , acrylates claim 1 , urethanes claim 1 , silicones claim 1 , polyimide claim 1 , poly(phenylene oxide) claim 1 , polyamide claim 1 , polyester claim 1 , PEEK claim 1 , ...

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Номер записи: 33
22-05-2014 дата публикации

Optical waveguide forming resin composition, optical waveguide and light transmission flexible printed board produced by using the resin composition, and production method for the optical waveguide

Номер: US20140140672A1
Автор: Tomoyuki Hirayama
Принадлежит: Nitto Denko Corp

There are provided an optical waveguide forming resin composition, an optical waveguide and a light transmission flexible printed board both produced by using the composition, and a production method for the optical waveguide, wherein the resin composition is superior in coatability, capable of omitting a solvent drying step in coating film formation, and suitable as a material for forming an optical waveguide which allows only a low waveguide loss and which has a higher Tg and higher flexibility. An optical waveguide forming resin composition comprises the following components (A) through (D), wherein the optical waveguide forming resin composition is free from a solid resin component and the viscosity thereof under a 25° C. environment is within the range of 10 to 20 mPa·s: (A) a liquid oxetane compound; (B) a liquid epoxy compound; (C) an alkylene glycol; and (D) a photoacid generator.

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Номер записи: 34
28-02-2019 дата публикации

METHOD OF MAKING A DISTRIBUTED OPTICAL FIBER SENSOR HAVING ENHANCED RAYLEIGH SCATTERING AND ENHANCED TEMPERATURE STABILITY, AND MONITORING SYSTEMS EMPLOYING SAME

Номер: US20190064432A1
Автор: BURIC MICHAEL P., CHEN PENG KEVIN, Huang Sheng, OHODNICKI PAUL R., YAN AIDONG
Принадлежит: University of Pittsburgh - of the Commonwealth System of Higher Education

A method of making an optical fiber sensor device for distributed sensing includes generating a laser beam comprising a plurality of ultrafast pulses, and focusing the laser beam into a core of an optical fiber to form a nanograting structure within the core, wherein the nanograting structure includes a plurality of spaced nanograting elements each extending substantially parallel to a longitudinal axis of optical fiber. Also, an optical fiber sensor device for distributed sensing includes an optical fiber having a longitudinal axis, a core, and a nanograting structure within the core, wherein the nanograting structure includes a plurality of spaced nanograting elements each extending substantially parallel to the longitudinal axis of the optical fiber. Also, a distributed sensing method and system and an energy production system that employs such an optical fiber sensor device. 1. A method of making an optical fiber sensor device structured for distributed sensing , comprising:generating a laser beam comprising a plurality of ultrafast pulses; andfocusing the laser beam into a core of an optical fiber to form a nanograting structure within the core, wherein the nanograting structure includes a plurality of spaced nanograting elements each extending substantially parallel to a longitudinal axis of optical fiber.2. The method according to claim 1 , wherein the plurality of ultrafast pulses comprises a plurality of femtosecond ultrafast pulses.3. The method according to claim 2 , wherein each of the femtosecond ultrafast pulses is a sub-μJ laser pulse.4. The method according to claim 1 , further comprising causing the laser beam and the optical fiber to be moved relative to one another during focusing such that the nanograting structure is formed within a longitudinally extending portion of the core.5. The method according to claim 4 , wherein a position of the laser beam in a longitudinal direction is stationary and wherein the optical fiber is caused to move ...

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Номер записи: 35
12-03-2015 дата публикации

SYSTEMS AND METHODS FOR FACILITATING OPTICAL PROCESSES IN A BIOLOGICAL TISSUE

Номер: US20150073513A1
Автор: Redmond Robert W., Yun Seok-Hyun
Принадлежит:

A system and method for establishing optical communication between the depths of the biological tissue, optionally exceeding 1 cm, and the ambient environment with the use of an optical waveguide device that includes biodegradable material. The waveguide device is configured to deliver light from the outside into the biological tissue and/or vice versa. The light delivered from the biological tissue is informative about the status of the tissue. A specific waveguide device includes a mesh of biodegradable optical waveguides, is configured for insertion into the tissue, and does not require to be removed from the tissue after the irradiation of the tissue has been accomplished. 1. A light-delivery system comprising:a biodegradable mesh of optical waveguides, said optical waveguides having respectively corresponding light-guiding surfaces and terminating facets,said biodegradable mesh having an optical terminal structured to receive light from a light source into optical waveguides of said biodegradable mesh,wherein at least one of said optical waveguides is structured to radiate light propagating therein through at least one of (i) a corresponding light-guiding surface when said surface is in contact with the biological tissue and (ii) a corresponding terminating facet.2. A system according to claim 1 , wherein at least one of said optical waveguides includes at least one of polyethylene glycols (PEGs) claim 1 , poly-L-lactic acid (PLLA) claim 1 , poly-dl-lactide-co-glycolide (PLGA).3. A system according to claim 1 , further comprising an opto-electronic component including at least one of a) a source of light claim 1 , wherein said opto-electronic component is adapted to couple light into the optical terminal of said biodegradable mesh claim 1 , and b) an optical detector adapted to receive light claim 1 , guided by the at least one of the optical waveguides claim 1 , through the optical terminal of said biodegradable mesh.4. A system according to claim 2 , wherein ...

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Номер записи: 36
24-03-2022 дата публикации

WEAKLY-PENETRATING RADIATION DETECTION PLASTIC SCINTILLATING FIBER

Номер: US20220091325A1
Автор: AKARI Masashi, FUJITA Katsuhiro
Принадлежит: KURARAY CO., LTD.

A plastic scintillating fiber capable of detecting radiation having a weakly penetrating property is provided. A plastic scintillating fiber according to an aspect of the present invention includes a plastic optical fiber, and further includes a core containing at least one type of a fluorescent agent, a cladding layer having a refractive index lower than that of the core disposed at a center, and an outermost layer covering an outer peripheral surface of the cladding layer. The outermost layer contains a base material that generates scintillation light, and at least one type of a fluorescent agent that converts the scintillation light into light having a wavelength longer than that of the scintillation light. 1. A plastic scintillating fiber comprising a plastic optical fiber , further comprising:a core containing at least one type of a fluorescent agent;a cladding layer having a refractive index lower than that of the core disposed at a center; andan outermost layer covering an outer peripheral surface of the cladding layer, whereinthe outermost layer contains a base material that generates scintillation light, and at least one type of a fluorescent agent that converts the scintillation light into light having a wavelength longer than that of the scintillation light.2. The plastic scintillating fiber according to claim 1 , wherein the fluorescent agent contained in the core further convert the light generated in the outermost layer into light having a wavelength longer than that of the light generated in the outermost layer.3. The plastic scintillating fiber according to claim 1 , wherein the cladding layer has a multi-cladding structure comprising:an inner cladding layer; andan outer cladding layer covering an outer peripheral surface of the inner cladding layer and having a refractive index lower than that of the inner cladding layer.4. The plastic scintillating fiber according to claim 1 , wherein the fluorescent agent contained in the core wavelength-converts ...

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Номер записи: 37
05-03-2020 дата публикации

OPTICAL FIBER WITH REDUCING LIGHT BIAS FOR LIGHTING AND MANUFACTURING METHOD OF THE SAME

Номер: US20200073049A1
Автор: Hwang Jin Taek, Kang Chan Hee, Lee Byeok Jae
Принадлежит:

Disclosed is an optical fiber with reducing light bias for lighting including: a core extending in a length direction and formed of a material containing a phosphorus (P) based stabilizer; and a clad formed to surround the core, wherein the phosphorus (P) based stabilizer contains cyclic phosphite. 1. An optical fiber with reducing light bias for lighting comprising:a core extending in a length direction and formed of a material containing a phosphorus (P) based stabilizer; anda clad formed to surround the core,wherein the phosphorus (P) based stabilizer contains cyclic phosphite.2. The optical fiber with reducing light bias for lighting of claim 1 , wherein:the cyclic phosphite contains bis(2.6-di-tert-butyl-4-methylphenyl) pentaerythriol-di-phosphite.3. The optical fiber with reducing light bias for lighting of claim 1 , wherein:the core is formed of a material containing 0.1 to 0.4 wt % of a silicone dispersant, 0.05 to 1 wt % of the phosphorus (P) based stabilizer, and the remainder resin.4. The optical fiber with reducing light bias for lighting of claim 1 , wherein:the clad is formed of a material containing a fluorine (B) based resin.5. The optical fiber with reducing light bias for lighting of claim 4 , wherein:the clad is formed of a material that does not contain a silicon dispersant.6. The optical fiber with reducing light bias for lighting of claim 3 , wherein:the resin is formed of poly methyl methacrylate (PMMA).7. The optical fiber with reducing light bias for lighting of claim 3 , wherein:the resin is a form in which methyl methacrylate and butyl metacrylate are polymerized.8. The optical fiber with reducing light bias for lighting of claim 1 , wherein:the cyclic phosphite has a molecular weight of 650 or less.9. The optical fiber with reducing light bias for lighting of claim 1 , wherein:the cyclic phosphite has a melting point of 220° C. or more.10. The optical fiber with reducing light bias for lighting of claim 1 , wherein:the clad includesa ...

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Номер записи: 38
21-03-2019 дата публикации

FEEDSTOCK LINES FOR ADDITIVE MANUFACTURING OF AN OBJECT, AND SYSTEMS AND METHODS FOR CREATING FEEDSTOCK LINES

Номер: US20190084251A1
Автор: Evans Nick Shadbeh, Harrison Samuel F., Kozar Michael Patrick, Torres Faraón, Wilenski Mark Stewart
Принадлежит:

A feedstock line () comprises elongate filaments (), a resin (), and optical direction modifiers (). The resin () covers the elongate filaments (). The optical direction modifiers () are covered by the resin () and are interspersed among the elongate filaments (). Each of the optical direction modifiers () has an outer surface (). Each of the optical direction modifiers () is configured such that when electromagnetic radiation () strikes the outer surface () from a first direction, at least a portion of the electromagnetic radiation () departs the outer surface () in a second direction that is at an angle to the first direction to irradiate, in the interior volume of the feedstock line (), the resin () that, due at least in part to the elongate filaments (), is not directly accessible to the electromagnetic radiation (), incident on the exterior surface of the feedstock line. 134-. (canceled)35. A system for creating a feedstock line for additive manufacturing of an object , the feedstock line having a feedstock-line length , the system comprising:a prepreg-tow supply, configured to dispense a precursor prepreg tow, comprising elongate filaments and resin, covering the elongate filaments;a prepreg-tow separator, configured to separate the precursor prepreg tow, dispensed from the prepreg-tow supply, into individual ones of the elongate filaments, at least partially covered with the resin, or into subsets of the elongate filaments, at least partially covered with the resin, wherein each of the subsets comprises a plurality of the elongate filaments;an optical-direction-modifier supply, configured to dispense optical direction modifiers to be applied to the individual ones of the elongate filaments, at least partially covered with the resin, or the subsets of the elongate filaments, at least partially covered by the resin, originating from the prepreg-tow separator, wherein each of the optical direction modifiers has an outer surface, and each of the optical direction ...

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Номер записи: 39
01-04-2021 дата публикации

OPTICAL FIBER ARTICLE, ITS PRODUCTION AND USE

Номер: US20210093158A1
Автор: Fratzer Oliver, Mangold Stephanie, WEINGÄRTNER Thomas
Принадлежит:

The present disclosure relates to an optical fiber article and a method for the production of the optical fiber article. The present disclosure in particular relates to the use of the optical fiber article in a fiber bundle as light guide and/or image guide, for example in an endoscope. 2. The optical fiber article according to claim 1 , wherein the amount of photopolymerized polymers is less than 1% by weight claim 1 , based on the weight of the functional layer.3. The optical fiber article according to claim 1 , wherein the amount of polyacrylates claim 1 , polymethacrylates claim 1 , polyvinyl polymers claim 1 , polystyrene and/or derivatives thereof in the functional layer is less than 1% by weight claim 1 , based on the weight of the functional layer.4. The optical fiber article according to claim 1 , wherein the optical fiber article comprises less than 500 ppm (m/m) of a halide.5. The optical fiber article according to claim 1 , wherein the functional layer comprises at least one fatty acid.6. The optical fiber article according to claim 1 , wherein the optical fiber has a bending radius of less than 10 mm when measured in the breaking-loop test according to DIN 58141-6:2011.7. The optical fiber article according to claim 1 , wherein the optical fiber article has a press force of at least 250 N.8. The optical fiber article according to claim 1 , wherein the optical fiber article is biocompatible according to at least one of ISO10993-1:2018 claim 1 , USP Class VI claim 1 , and ISO10993-5:2009.9. The optical fiber article according to claim 1 , wherein the functional layer comprises at least one of an alkylsilane and a polyethylene glycol silane claim 1 , covalently bound to the surface of the fiber.10. The optical fiber article according to claim 1 , wherein R4 is —NHR′; wherein R′ is —(CH)NH claim 1 , wherein m=2 claim 1 , and wherein Z is an unbranched alkyl group with 1 to 10 carbon atoms claim 1 , preferably of 3 to 8 carbon atoms.11. The optical fiber ...

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Номер записи: 40
09-04-2020 дата публикации

Fabric with Fiber Including Devices

Номер: US20200110236A1
Автор: Fink Yoel, Rein Michael
Принадлежит: Massachusetts Institute of Technology

Provided is a fabric including a plurality of fibers disposed in a fabric configuration. At least one of the fibers comprises a device fiber having a device fiber body including a device fiber body material, having a longitudinal axis along a device fiber body length. A plurality of discrete devices are disposed as a linear sequence within the device fiber body along at least a portion of the device fiber body length. Each discrete device includes at least one electrical contact pad. The device fiber body includes device fiber body material regions disposed between adjacent discrete devices in the linear sequence, separating adjacent discrete devices. At least one electrical conductor is disposed within the device fiber body along at least a portion of the device fiber body length. The electrical conductor is disposed in electrical connection with an electrical contact pad of discrete devices within the device fiber body. 1. A fabric comprising:a plurality of fibers disposed in a fabric configuration, at least one of the fibers comprising a device fiber; and a device fiber body comprising a device fiber body material and having a longitudinal axis along a device fiber body length;', 'a plurality of discrete devices disposed as a linear sequence of discrete devices within the device fiber body along at least a portion of the device fiber body length, each discrete device including at least one electrical contact pad, said device fiber body including device fiber body material regions disposed between adjacent discrete devices in the linear sequence of discrete devices, separating adjacent discrete devices; and', 'at least one electrical conductor disposed within the device fiber body along at least a portion of the device fiber body length, the electrical conductor disposed in electrical connection with an electrical contact pad of discrete devices within the device fiber body., 'each device fiber comprising2. The fabric of wherein the device fiber body material ...

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Номер записи: 41
25-08-2022 дата публикации

FLUORINE-CONTAINING COPOLYMER, OPTICAL RESIN COMPOSITION, AND OPTICAL RESIN FORMED BODY

Номер: US20220267490A1
Автор: Kawamitsu Shoichi, Sugimoto Naoya
Принадлежит: NITTO DENKO CORPORATION

The fluorine-containing copolymer of the present invention includes: 2. The fluorine-containing copolymer according to claim 1 , whereinthe fluorine-containing copolymer includes the structural unit (B), anda content of the structural unit (B) is 5 to 10 mol % relative to a total content of all structural units in the fluorine-containing copolymer.3. The fluorine-containing copolymer according to claim 1 , whereinthe fluorine-containing copolymer includes the structural unit (C), anda content of the structural unit (C) is 5 to 10 mol % relative to the total content of all structural units in the fluorine-containing copolymer.4. The fluorine-containing copolymer according to claim 1 , whereinthe fluorine-containing copolymer includes the structural unit (D), anda content of the structural unit (D) is 30 to 67 mol % relative to the total content of all structural units in the fluorine-containing copolymer.9. An optical resin composition comprising the fluorine-containing copolymer according to .10. The optical resin composition according to claim 9 , further comprising a refractive index modifier.11. An optical resin formed body comprising the optical resin composition according to .12. The optical resin formed body according to claim 11 , being an optical transmitting body.13. The optical resin formed body according to claim 12 , wherein the optical transmitting body is a plastic optical fiber. The present invention relates to a fluorine-containing copolymer, an optical resin composition including the fluorine-containing copolymer, and an optical resin formed body including the fluorine-containing copolymer.A fluorine-containing polymer is a useful substance used as the material of optical members such as plastic optical fibers (hereinafter referred to as “POFs”) and exposure members in a wide range of fields.For example, Patent Literature 1 describes, as a non-crystalline fluorine-containing polymer having substantially no C—H bond and suitably used as the material ...

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Номер записи: 42
27-05-2021 дата публикации

OPTICAL FIBER CONNECTOR ASSEMBLY WITH FERRULE MICROHOLE INTERFERENCE FIT AND RELATED METHODS

Номер: US20210157062A1
Автор: Bickham Scott Robertson, McDermott Mark Alan, Tandon Pushka
Принадлежит:

The present disclosure relates to a process by which an optical fiber is terminated with a ferrule to form an optical fiber connector assembly. The ferrule is heated at a heating temperature whereby the ferrule bore (and ferrule microhole) expands. The optical fiber is then inserted into the ferrule microhole. The ferrule then contracts when heat is no longer applied resulting in an interference fit between the optical fiber and the ferrule microhole based on the dimensions of the optical fiber and the ferrule microhole. The interference fit yields certain optical fiber characteristics within the optical fiber connector assembly. The present disclosure also relates to an optical fiber having an outer cladding comprising titania-doped silica and the resulting optical fiber characteristics. 1. An optical fiber connector assembly , comprising:{'b': '1', 'an optical fiber having an optical fiber diameter D, the optical fiber comprising a core, an inner cladding surrounding the core, and a titania-doped outer cladding surrounding the inner cladding, the titania-doped outer cladding having between 4 wt. % to 16 wt. % titania based on the total weight of the titania-doped outer cladding and having a thickness between 3 microns and 20 microns;'}{'b': '2', 'a ferrule having a front end, a rear end, and a ferrule bore including a ferrule bore diameter and extending between the front end and the rear end, wherein at least a portion of the ferrule bore defines a microhole that has a microhole diameter D;'}{'b': 2', '1, 'wherein a fit D−D exists between the microhole and the optical fiber, and the fit is between 0 microns and −0.4 microns.'}2. The connector assembly of claim 1 , wherein the optical fiber connector assembly has an insertion loss of less than 0.25 decibels (dB) at a reference wavelength of 1550 nanometers (nm).3. The connector assembly of claim 1 , wherein the optical fiber connector assembly has an insertion loss of less than 0.12 dB at a reference wavelength of ...

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Номер записи: 43
10-05-2018 дата публикации

COAXIAL WIRE AND OPTICAL FIBER TRACE VIA HYBRID STRUCTURES AND METHODS TO MANUFACTURE

Номер: US20180129002A1
Автор: Buvid Daniel J., Campbell Eric J., Czaplewski Sarah K., Steffen Christopher W.
Принадлежит:

A method of forming a coaxial wire that includes providing a sacrificial trace structure using an additive forming method, the sacrificial trace structure having a geometry for the coaxial wire, and forming a continuous seed metal layer on the sacrificial trace structure. The sacrificial trace structure may be removed and a first interconnect metal layer may be formed on the continuous seed layer. An electrically insulative layer may then be formed on the first interconnect metal layer, and a second interconnect metal layer is formed on the electrically insulative layer. Thereafter, a dielectric material is formed on the second interconnect metal layer to encapsulate a majority of an assembly of the first interconnect metal layer, electrically insulative layer and second interconnect metal layer that provides said coaxial wire. Ends of the coaxial wire may be exposed through opposing surfaces of the dielectric material to provide that the coaxial wire extends through that dielectric material. 1. A method of forming a coaxial wire comprising:providing a sacrificial trace structure using an additive forming method, the sacrificial trace structure having a geometry for the coaxial wire;forming a continuous seed metal layer on the sacrificial trace structure;removing the sacrificial trace structure, wherein the continuous seed metal layer remains;forming a first interconnect metal layer on the continuous seed layer;forming an electrically insulative layer on the first interconnect metal layer to provide that the electrically insulative layer is present entirely encircling a core of the first interconnect metal layer;forming a second interconnect metal layer on the electrically insulative layer to provide that the second interconnect metal layer is present entirely encircling the electrically insulative layer; andforming a dielectric material on the second interconnect metal layer to encapsulate a majority of an assembly of the first interconnect metal layer, ...

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Номер записи: 44
07-08-2014 дата публикации

Compound containing crosslinkable moieties, prepolymer, blend and polymer sheet obtained therefrom, and waveguide for optical interconnection

Номер: US20140219625A1
Автор: Choe Joong-Seon, JU Jung Jin, KIM Jin Tae, Kim Min-Su, LEE Jong-Moo, PARK Seung Koo, PARK Suntak
Принадлежит: Electronics and Telecommunications Research Institute

An optical waveguide for optical interconnection including a polymer sheet comprising a crosslinked product of a prepolymer, the prepolymer prepared by condensation reaction between a first compound represented by the formula Ar—H, where Ar comprises (a) a crosslinkable moiety at one end, (b) a moiety selected from the group consisting of —O—, —S—, —COO—, —CO—, —COS—, —SO—, and —NH—, and (c) one or two repeating units selected from the group consisting of: 3. The optical waveguide of claim 2 , wherein the blend is prepared by mixing the prepolymer and one of a polymer and a vinyl monomer.5. The optical waveguide of claim 4 , further comprising a base film covering at least a portion of the cladding.6. The optical waveguide of claim 5 , wherein the base film comprises the polymer sheet.7. The optical waveguide of claim 4 , further comprising a metal sheet covering at least a portion of the cladding. This is a divisional of co-pending U.S. application Ser. No. 12/634,625, filed Dec. 9, 2009. This application claims the benefit of Korean Patent Application Nos. 10-2008-0125325, filed on Dec. 10, 2008, and 10-2009-0100772, filed on Oct. 22, 2009, in the Korean Intellectual Property Office, the disclosures of which are incorporated herein in their entirety by reference.1. Field of the InventionThe present invention relates to a material for a flexible thick film optical waveguide for optical interconnection and a method of preparing the same, and more particularly, to a compound used to prepare a thick film optical waveguide having a thickness of several tens of μm or greater, a prepolymer, a blend, and a polymer sheet obtained therefrom, and an optical waveguide for optical interconnection.2. Description of the Related ArtPolymer materials for optical waveguides include a large amount of fluorine in order to reduce optical loss in optical communication bands during the fabrication of waveguides. Polymer materials have an intrinsic absorption area based on vibrations of ...

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Номер записи: 45
17-05-2018 дата публикации

FLEXIBLE OPTICAL WAVEGUIDES AND METHODS FOR MANUFACTURING FLEXIBLE OPTICAL WAVEGUIDES

Номер: US20180136389A1
Автор: Kumar Parshant, LeBlanc John J., Lissandrello Charles A., Register Joseph J., Segura Carlos A., Wheeler Jesse J.
Принадлежит:

The material stack of the present disclosure can be used for fabricating optical waveguides that are thin and flexible, and that can bend light around small turns. The stack of materials can include a polymer core and a cladding, which together can create a large difference in refractive index. As a result, light can remain within the core even when bent around radii where standard glass fibers could fail. 1. A method to manufacture an implantable optrode comprising:depositing a first cladding layer comprising a fluoropolymer;treating the first cladding layer with a fluoropolymer etchant to change a surface energy of a first face of the first cladding layer;depositing a core material on the first face of the first cladding layer; andencapsulating the core material with a second cladding layer.2. The method of claim 1 , wherein the core material comprises at least one of poly(methyl methacrylate) (PMMA) claim 1 , Omrmocore claim 1 , SU-8 claim 1 , or parylene.3. The method of claim 2 , wherein the change to the surface energy of the first face of the first cladding layer is configured to enable the core material to bond with the first cladding layer.4. The method of claim 1 , further comprising etching or patterning the core material to form a waveguide.5. The method of claim 4 , wherein the waveguide has a width between about 10 μm and about 1 mm.6. The method of claim 4 , wherein the waveguide has a thickness between about 10 μm and about 1 mm.7. The method of claim 4 , wherein the waveguide comprises at least one turn with a diameter between about 50 μm and about 1000 μm.8. The method of claim 1 , further comprising:depositing a release layer onto a silicon wafer; anddepositing a substrate layer on the release layer.9. The method of claim 8 , wherein the substrate layer is between about 10 μm and about 30 μm.10. The method of claim 8 , further comprising:depositing a resist layer on the substrate layer;patterning the resist layer;depositing a metal layer on the ...

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Номер записи: 46
09-05-2019 дата публикации

WRITING OF HIGH MECHANICAL STRENGTH FIBER BRAGG GRATINGS USING ULTRAFAST PULSES AND A PHASE MASK

Номер: US20190137685A1
Автор: Bernier Martin, Carrier Julien, TRÉPANIER François, Vallee Real
Принадлежит:

An optical fiber having a Bragg grating along a non-photosensitized grating region thereof and a pristine polymer coating around the grating region with the Bragg grating having been written through the polymer coating has a mechanical resistance that is greater than 20% of the mechanical resistance of an identical grating-free optical fiber.” 124-. (canceled)25. A manufacture comprising an optical fiber , wherein said optical fiber comprises a Bragg grating along a non-photosensitized grating region thereof , wherein said optical fiber has a pristine polymer coating around said grating region , wherein said Bragg grating has been written through said polymer coating , wherein said optical fiber is characterized by a mechanical resistance that is greater than 20% of a mechanical resistance of an identical grating-free optical fiber.26. The manufacture of claim 25 , wherein said Bragg grating is characterized by a fundamental Bragg resonance.27. The manufacture of claim 25 , wherein said optical fiber comprises a core and a cladding claim 25 , wherein said non-photosensitized grating region is provided within said core claim 25 , wherein said cladding surrounds said core claim 25 , and wherein said polymer coating extends around said cladding.28. The manufacture of claim 26 , wherein said core and said cladding are made of a glass material or of a crystalline material.29. The manufacture of claim 25 , wherein said Bragg grating defines a refractive index modulation greater than 5.10.30. The manufacture of claim 25 , wherein said optical fiber has a mechanical resistance of at least 99% of said mechanical resistance of an identical grating-free optical fiber.31. The manufacture of claim 25 , further comprising a wavelength-division-multiplexing light filter claim 25 , wherein said optical fiber is a constituent of said wavelength-division-multiplexing light filter.32. The manufacture of claim 25 , further comprising a laser having a laser cavity claim 25 , wherein ...

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Номер записи: 47
09-05-2019 дата публикации

Systems And Techniques For Splicing Together Optical Fiber Ribbon Cables Having Different Core-To-Core Spacings

Номер: US20190137711A1
Автор: Burek Denis E, Czosnowski Wladyslaw, Liang Yue
Принадлежит: OFS FITEL, LLC

A system forms, at an end of a multifiber ribbon cable, a multifiber ribbon cable segment having an enlarged core-to-core spacing. A UV-transparent mold is mounted on top of a chassis. The mold defines a plurality of individual fiber channels corresponding to individual fibers of the existing multifiber ribbon cable and having a spacing equal to that of the enlarged core-to-core spacing. Each individual fiber channel passes through the internal cavity. The assembled mold further includes an injection system for receiving light curable, flowable material from the reservoir and pumping system and feeding it into the internal cavity, and at least one vent for allowing air to escape from the internal cavity as the light-curable, flowable material is fed into the internal cavity. The injected material is cured by exposure to a curing light. 1. A system for forming , at an end of an existing multifiber ribbon cable having an initial core-to-core spacing , a multifiber ribbon cable segment having an enlarged core-to-core spacing , comprising:a chassis,a mold mounted on top of the chassis,a reservoir and pumping system mounted on top of the mold for holding a flowable, light-curable material and injecting the light-curable material into the mold, anda curing light source mounted into an enclosure within the chassis,wherein the mold is formed from a material that is transparent to the curing light and is positioned such that light-curable material injected into the mold is exposed to light from the curing light source,wherein the mold comprises a base and a lid that, when in a closed configuration, define an internal cavity corresponding to the multifiber ribbon cable segment to be formed, and further define a plurality of individual fiber channels corresponding to individual fibers of the existing multifiber ribbon cable and having a spacing equal to that of the enlarged core-to-core spacing, wherein each individual fiber channel passes through the internal cavity, and ...

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Номер записи: 48
14-08-2014 дата публикации

VISUAL TRACER SYSTEM FOR FIBER OPTIC CABLE

Номер: US20140227438A1
Автор: Dean, Hurley William Carl, JR. David Lee
Принадлежит: Corning Cable Systems LLC

A fiber optic cable includes a first optical fiber, a jacket, and a second optical fiber. The first optical fiber includes a glass core and cladding. The glass core is configured to provide controlled transmission of light through the fiber optic cable for high-speed data communication. The jacket has an interior surface that defines a conduit through which the first optical fiber extends. The jacket further has an exterior surface that defines the outside of the fiber optic cable. The second optical fiber is integrated with the exterior surface of the jacket. 1. A method of manufacturing a cable , comprising:extruding a second optical fiber, wherein the second optical fiber is plastic, and wherein the second optical fiber is configured to release, along a length of the second optical fiber, at least some of light passed through the second optical fiber; andextruding, while extruding the second optical fiber, a jacket to at least partially embed the second optical fiber and to surround a first optical fiber, the first optical fiber comprising a glass core and cladding, wherein the glass core is configured to provide controlled transmission of light therethrough for high-speed data communication;wherein the first optical fiber is positioned in an interior cavity of the jacket and the second optical fiber is integrated with an exterior surface of the jacket, and wherein the jacket is such that light released by the second optical fiber is visible along the exterior surface of the jacket, thereby providing a visual trace.2. The method of claim 1 , wherein the second optical fiber is extruded with a round cross section.3. The method of claim 1 , wherein the plastic of the second optical fiber is a single material claim 1 , and wherein the material of the jacket has a lesser index of refraction than the plastic of the second optical fiber such that the material of the jacket serves as cladding for the second optical fiber.4. The method of claim 1 , wherein the second ...

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Номер записи: 49
04-06-2015 дата публикации

PREPOLYMER, CURABLE MATERIAL, COATING COMPOSITION, NON-LINEAR OPTICAL MATERIAL, OPTICAL WAVEGUIDE AND LIGHT CONTROL DEVICE

Номер: US20150153509A1
Автор: FUKUDA Keiko, MUROTANI Eisuke, TAKAHIRA Yusuke
Принадлежит: Asahi Glass Company, Limited

Provided are: a prepolymer which is capable of forming a non-linear optical material that has excellent non-linear optical effect, heat resistance, withstand voltage and transparency; a curable material which contains the prepolymer; a coating composition which contains the curable material and a solvent; a non-linear optical material which is obtained by curing the curable material; an optical waveguide which uses the non-linear optical material; and a light control device which is provided with the optical waveguide. The present invention uses a prepolymer having a crosslinkable functional group, which is obtained by reacting one or more compounds (X) that are selected from the group consisting of compounds (X1), compounds (X2) and compounds (X3), a compound (Y) that is represented by formula (Y), a compound (Z) that has three or more phenolic hydroxyl groups, and an organic compound (B) that exerts a non-linear optical effect and has a reactive group. 2. The prepolymer according to claim 1 , which is a prepolymer (C1) obtained by reacting the organic compound (B) with a fluorinated polyarylene ether prepolymer (A1) obtained by subjecting the compound (X) claim 1 , the compound (Y) and the compound (Z) to a condensation reaction in the presence of a dehydrohalogenating agent.3. The prepolymer according to claim 1 , which is a prepolymer (C2) obtained by reacting the organic compound (B) and the compound (X) with a fluorinated polyarylene ether prepolymer (A2) obtained by subjecting the compound (Y) and the compound (Z) to a condensation reaction in the presence of a dehydrohalogenating agent.4. The prepolymer according to claim 1 , which is a prepolymer (C3) obtained by reacting the organic compound (B) and the compound (X) with a fluorinated polyarylene ether prepolymer (A1) obtained by subjecting the compound (X) claim 1 , the compound (Y) and the compound (Z) to a condensation reaction in the presence of a dehydrohalogenating agent.5. The prepolymer according ...

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Номер записи: 50
15-09-2022 дата публикации

Methods and devices for optoacoustic stimulation

Номер: US20220287758A1
Автор: Chen Yang, Ji-Xin Cheng, Linli Shi, Lu Lan, Nan Zheng, Ying Jiang, Yueming Li
Принадлежит: Boston University

A tapered fiber optoacoustic emitter includes a nanosecond laser configured to emit laser pulses and an optic fiber. The optic fiber includes a tip configured to guide the laser pulses. The tip has a coating including a diffusion layer and a thermal expansion layer, wherein the diffusion layer includes epoxy and zinc oxide nanoparticles configured to diffuse the light while restricting localized heating. The thermal expansion layer includes carbon nanotubes (CNTs) and Polydimethylsiloxane (PDMS) configured to convert the laser pulses to generate ultrasound. The frequency of the ultrasound is tuned with a thickness of the diffusion layer and a CNT concentration of the expansion layer.

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Номер записи: 51
21-08-2014 дата публикации

Optical Fiber Having Scintillation Quencher, a Radiation Sensor and a Radiation Detection Apparatus Including the Optical Fiber and a Method of Making and Using the Same

Номер: US20140231656A1
Автор: Kusner Michael R.
Принадлежит: SAINT-GOBAIN CERAMICS & PLASTICS, INC.

An optical fiber can include a polymer and a scintillation quencher. The optical fiber can be a member of a radiation sensor or radiation detecting system. The scintillation quencher can include a UV-absorber or a scintillation resistant material. In one embodiment, the radiation sensor includes a scintillator that is capable of generating a first radiation having a wavelength of at least about 420 nm; and a scintillation quencher is capable of absorbing a second radiation having a wavelength of less than about 420 nm. The optical fiber including a scintillation quencher provides for a method to detect neutrons in a radiation detecting system. 1. An optical fiber , comprising:a polymer core; anda scintillation quencher.2. The optical fiber according to claim 1 , wherein the polymer core comprises a polystyrene.3. The optical fiber according to claim 1 , wherein the scintillation quencher includes a UV-absorber.4. The optical fiber according to claim 3 , wherein the UV-absorber absorbs radiation at wavelengths in a UV-A range claim 3 , in a UV-B range claim 3 , in a UV-C range claim 3 , or any combination thereof.5. The optical fiber according to claim 1 , wherein the scintillation quencher absorbs Cherenkov light.6. The optical fiber according to claim 1 , wherein the scintillation quencher includes a scintillation resistant material.7. The optical fiber according to claim 1 , wherein:the optical fiber is capable of transmitting a first radiation having a wavelength of at least about 420 nm; andthe scintillation quencher is capable of absorbing a second radiation having a wavelength of less than about 420 nm.8. The optical fiber according to claim 1 , wherein the scintillation quencher is selected from a group consisting of aromatic compounds claim 1 , ketones claim 1 , and esters.9. The optical fiber according to claim 1 , wherein the scintillation quencher is selected from a group consisting of benzophenone claim 1 , 2 claim 1 ,4-dihydroxybenzophenone claim 1 , 2 ...

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Номер записи: 52
15-09-2022 дата публикации

POLYMER OPTICAL FIBRE FOR ACTIVE IMPLANTABLE MEDICAL DEVICES (AIMD) AND AIMD USING SAME

Номер: US20220291442A1
Автор: Callegari Vincent, DE COCK DE RAMEYEN Aurelie, Doguet Pascal, Nieuwenhuys Aurore
Принадлежит: Synergia Medical

A polymer optical fibre (POF) () for transmitting light of wavelength, λi, between two separate elements of an active implantable medical device (AIMD), includes a core () which is cylindrical and made of a cyclic olefin polymer (COP) or copolymer (COC), having a core refractive index at the wavelength, λi, n_core, A cladding () which has a cladding refractive index at the wavelength, λi, n_clad Подробнее

Номер записи: 53
14-06-2018 дата публикации

SYSTEMS AND METHODS FOR INTEGRATED, MULTI-FUNCTIONAL, FAULT TOLERANT SENSING AND COMMUNICATION

Номер: US20180164526A1
Автор: Brookhart Andrew, Cappelli Marcus D., Davis Mark W., Garhart Jonathan K., Geiger Derek, Sarlashkar Avinash
Принадлежит:

A fiber-optic sensor system includes a structure having a fiber-optic cable operatively connected thereto. The system includes a network controller with an interrogator operatively connected to the fiber-optic cable to receive optical energy indicative of a characteristic of the structure therefrom and convert optical energy to electrical energy and electrical energy to optical energy for data communication. A sensor and/or a data source are operatively connected to the fiber-optic cable through the network controller to transmit data through the fiber-optic cable and receive data therefrom. 1. A fiber-optic sensor system comprising:a structure having a fiber-optic cable operatively connected thereto;a network controller having an interrogator operatively connected to the fiber-optic cable to receive optical energy indicative of a characteristic of the structure therefrom and convert optical energy to electrical energy and electrical energy to optical energy for data communication; andat least one of a data source or a sensor operatively connected to the fiber-optic cable through the network controller to transmit data through the fiber-optic cable and receive data therefrom.2. The system as recited in claim 1 , wherein the data source is at least one of an avionics system or a flight control system to provide data through the fiber optic cable to the network controller and to receive data through the fiber optic cable from the network controller.3. The system as recited in claim 2 , wherein the avionics system includes at least one of a health monitoring system or a rotor state feedback system operatively connected to the fiber-optic cable through the network controller to transmit data to the network controller and through the fiber-optic cable and to receive data therefrom.4. The system as recited in claim 1 , wherein the fiber-optic cable is embedded within the structure.5. The system as recited in claim 1 , wherein the structure is one of a plurality of ...

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Номер записи: 54
21-05-2020 дата публикации

Methods for Providing Flammability Protection for Plastic Optical Fiber

Номер: US20200158972A1
Автор: Dennis G. Koshinz, Eric Y. Chan, Henry B. Pang, Kim Quan Anh Nguyen, Tuong K. Truong
Принадлежит: Boeing Co

Methods for providing flammability protection for plastic optical fiber (POF) embedded inside avionics line replaceable units (LRUs) or other equipment used in airborne vehicles such as commercial or fighter aircrafts. A thin and flexible flammability protection tube is placed around the POF. In one proposed implementation, a very thin (100 to 250 microns in wall thickness) polyimide tube is placed outside and around the POF cable embedded inside an LRU or other equipment. The thin-walled polyimide tube does not diminish the flexibility of the POF cable.

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Номер записи: 55
23-06-2016 дата публикации

Hydrogel fibers and preparation thereof

Номер: US20160177002A1
Автор: Hadas Kaminsky, Lev KUNO, Oleg Palchik
Принадлежит: INTELLISIV Ltd

This invention provides a Polymer Fiber and Polymer Optical Fiber (POF) wherein said polymer is a hydrogel. This invention further provides a process for preparing water-absorbent and superabsorbent acrylate polymer fibers and polymer optical fibers, and provides encapsulated, biodegradable, renewable and functional hydrogel fibers and hydrogel optical fibers prepared according to the process of this invention.

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Номер записи: 56
01-07-2021 дата публикации

Expanded beam connector

Номер: US20210199897A1
Автор: Frank J. Graczyk, Richard J. Pimpinella, Surendra Chitti Babu
Принадлежит: Panduit Corp

An expanded beam connector has a MOST ferrule; a fiber to be retained within the MOST ferrule; and, a collimating lens abutting the fiber for expanding the optical beam of the fiber wherein the lens and fiber are in alignment to a common optic axis. In one embodiment, the collimating lens can have a conical cutout configured to aid in aligning the fiber to the common optic axis. In another embodiment, the collimating lens can have a semi-cylindrical tab protruding from the rear with a V-groove configured to interact with a flexible feature on the interior of the ferrule to align the fiber to the common optic axis.

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Номер записи: 57
23-06-2016 дата публикации

LIGHT CYLINDER, DISPENSER, AND LIGHT CYLINDER MANUFACTURING METHOD

Номер: US20160178838A1
Автор: Hwang Jang Hwan, Kim Heon Cheol
Принадлежит:

A light cylinder, a dispenser, and a method of manufacturing a light cylinder are disclosed. The light cylinder includes an outer layer and an inside layer, where the inside layer is formed by filling optical resin into the inside space of the outer layer, and the refractive index of the optical resin is determined in consideration of the refractive index of the outer layer. 1. A light cylinder comprising:an outer layer; andan inside layer formed by a filling of optical resin into an inside space of the outer layer,wherein a refractive index of the optical resin is determined in consideration of a refractive index of the outer layer.2. The light cylinder of claim 1 , wherein the outer layer is a clay claim 1 , and the inside layer is a core claim 1 , andthe clay has a thickness that is greater than or equal to 0.01 mm and smaller than or equal to 1 mm.3. The light cylinder of claim 1 , wherein the clay is a bendable material claim 1 , and the optical resin is a UV-curable resin.4. The light cylinder of claim 1 , wherein the optical resin is formed by combining a plurality of optical substances in consideration of the refractive index of the outer layer.5. The light cylinder of claim 4 , wherein the optical substances include a mixture of at least two of a urethane acrylate compound claim 4 , an epoxy acrylate compound claim 4 , an acrylate monomer claim 4 , an acrylate comprising a vinyl group claim 4 , a bisphenol compound claim 4 , and an acrylate comprising a fluoro group.6. A light cylinder comprising:a clay composed of a substance having a first refractive index; anda core composed of an optical substance formed by combining a plurality of substances,wherein the core has a second refractive index such that a total reflection relationship is established between the core and the clay.7. The light cylinder of claim 6 , wherein the core is formed by filling an optical resin into an inside space of the clay.8. A dispenser comprising:a body configured to hold an ...

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Номер записи: 58
22-06-2017 дата публикации

Light pipe structure of image sensing device and fabricating method thereof

Номер: US20170176671A1
Автор: Chin-Yu Hsieh, Tzu-Wen Kao, Yu-Yuan Lai
Принадлежит: Powerchip Technology Corp

A light pipe structure of an image sensing device including a substrate, a dielectric layer, and a light-pipe material layer is provided. The substrate has a light sensing region therein. The dielectric layer is disposed on the substrate. The dielectric layer has a light pipe therein, and the light pipe is located above the light sensing region. The light-pipe material layer is disposed in the light pipe and has a recessed curved surface.

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Номер записи: 59
28-05-2020 дата публикации

SYSTEMS AND METHODS FOR DATA COMMUNICATION

Номер: US20200167305A1
Автор: Chan Eric Y., Pang Henry B., Truong Tuong Kien
Принадлежит:

A line replacement unit includes a terminal controller, and a plastic optical fiber serial interface module (POFSIM) coupled between the terminal controller and the data bus. The POFSIM is configured to transmit digital optical signals to the data bus based on electrical signals received from the terminal controller, and transmit electrical signals to the terminal controller based on digital optical signals received from the data bus. 1. A line replacement unit (LRU) , comprising:a terminal controller configured to transmit and receive electrical signals for communication with a POF data bus; and [ transmit digital optical signals based on the electrical signals received from said terminal controller through said transmit light pipe; and', 'transmit electrical signals, to said terminal controller, based on digital optical signals received from said receive light pipe;, 'a mating connector that extends from said POFSIM and comprises a transmit metal hermetic feed-through tube within which a transmit light pipe is mounted, and a receive metal hermetic feed-through tube within which a receive light pipe is mounted, and wherein said POFSIM is configured to, 'a transmit POF coupled to said mating connector and optically coupled, within said transmit metal hermetic feed-through tube, to said transmit light pipe and further optically coupled to the POF data bus; and', 'a receive POF coupled to said mating connector and optically coupled, within said receive metal hermetic feed-through tube, to said receive light pipe and further optically coupled to the POF data bus., 'a plastic optical fiber serial interface module (POFSIM) coupled directly to said terminal controller and further coupled to the POF data bus, wherein said POFSIM comprises2. The LRU of claim 1 , wherein said POFSIM comprises an optical source configured to generate digital optical signals to be transmitted to the POF data bus.3. The LRU of claim 2 , wherein said transmit light pipe is optically coupled to ...

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Номер записи: 60
28-06-2018 дата публикации

RESIN OPTICAL WAVEGUIDE

Номер: US20180180806A1
Автор: OHARA Seiki, TAKENOBU Shotaro
Принадлежит: Asahi Glass Company, Limited

A resin optical waveguide containing a core, an under cladding and an over cladding having refractive indices lower than that of the core, in which the resin optical waveguide has, at one end side of, a core-exposed section at which the over cladding is not present and the core and the under cladding nearby the core are exposed and, of the under cladding, a portion corresponding to the core-exposed section has a first layer and a second layer that satisfy a certain condition. 1. A resin optical waveguide comprising a core , an under cladding and an over cladding having refractive indices lower than that of the core ,wherein the resin optical waveguide comprises, at one end side thereof, a core-exposed section at which the over cladding is not present and the core and the under cladding nearby the core are exposed and,of the under cladding, a portion corresponding to the core-exposed section comprises a first layer and a second layer that satisfy the following (1) to (3):(1) the first layer and the second layer differ from each other in a distance from an interface with the core or an exposed surface of the under cladding, and the first layer is positioned on a near side to these surfaces and the second layer is positioned on a far side from these surfaces;(2) the first layer is positioned within 15 μm in the distance from the interface with the core or the exposed surface of the under cladding; and(3) the first layer and the second layer differ from each other in refractive index, and the first layer has the refractive index higher than that of the second layer.2. The resin optical waveguide according to claim 1 , wherein the core-exposed section has a length of 100 μm or more in a light propagation direction.3. The resin optical waveguide according to claim 1 , having a difference (n-n) between a maximum value nof the refractive index of the first layer and a maximum value nof the refractive index of the second layer being 0.001 or more.4. The resin optical ...

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Номер записи: 61
20-06-2019 дата публикации

OPTICAL TRANSMISSION SYSTEM

Номер: US20190187365A1
Автор: MORI Takayoshi, Nakajima Kazuhide, SAKAMOTO Taiji, URUSHIBARA Azusa, WADA Masaki, Yamamoto Takashi
Принадлежит: Nippon Telegraph and Telephone Corporation

An optical transmission system according to the present disclosure is a mode multiplexed optical transmission system using a multi-mode optical fiber in which a plurality of propagation modes propagate as a transmission line, the optical transmission system including an optical fiber transmission line () that includes an optical fiber with two or more propagation modes; and a plurality of mode converters () that are configured to generate mode coupling between at least one pair of the propagation modes, in which a variation in an installation interval of the plurality of mode converters () is equal to or less than a threshold value determined by the transmission line length (Lt) of the optical fiber transmission line (). 1. An optical transmission system comprising:an optical fiber transmission line that includes an optical fiber with two or more propagation modes; anda plurality of mode converters that are configured to generate mode coupling between at least one pair of the propagation modes,wherein a variation in installation intervals of the plurality of mode converters is equal to or less than a threshold value determined by a transmission line length of the optical fiber transmission line.2. The optical transmission system according to claim 1 ,wherein a transmission line length of the optical fiber transmission line is Lt, and a converter length of the mode converter is Lg, and {'br': None, 'i': L', 'L', 'n+, 'sub': t', 'i=1', 'gi, 'sup': 'n', '(−Σ)/(1)×0.4 \u2003\u2003(c1)'}, 'wherein in a case where the transmission line length Lt includes the converter length Lg, standard deviation of an installation interval of the mode converter is equal to or less than a value expressed by a following expression (C1).'}3. The optical transmission system according to claim 1 ,wherein a transmission line length of the optical fiber transmission line is Lt, and a converter length of the mode converter is Lg, and {'br': None, 'Lt/(n+1)×0.4 \u2003\u2003(C2)'}, 'wherein in a ...

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Номер записи: 62
11-06-2020 дата публикации

LIGHT GUIDES WITH COATING FOR USE IN WATER

Номер: US20200183119A1
Автор: deWijs Willem-Jan Arend, VAN LIEROP MICHAEL MARIA JOHANNES, VISSER Cornelis Gerardus
Принадлежит:

The invention provides a layer stack () comprising a first silicone layer (), wherein the first silicone layer () has a first surface () and a second surface (), wherein the first silicone layer () is transmissive for UV radiation having one or more wavelengths selected from the range of 200-380 nm, wherein the layer stack () further comprises one or more of:—a first layer element configured at a first side of the first surface (), wherein the first layer element is associated by a chemical binding with the first surface () directly or via a first intermediate layer, which is transmissive for UV radiation having one or more wavelengths selected from the range of 200-380 nm, wherein the first layer element at least comprises a first layer differing in composition from the first silicone layer (), and wherein the first layer element is transmissive for UV radiation having one or more wavelengths selected from the range of 200-380 nm; and —a second layer element () configured at a second side of the second surface () wherein the second layer element () is associated by a chemical binding with the second surface () directly or via a second intermediate layer, wherein the second layer element () at least comprises a second layer () differing in composition from the first silicone layer (). 1. A layer stack comprising: wherein the first silicone layer has a first surface, a second surface and silicon layer a thickness,', 'wherein the first silicone layer is transmissive for UV radiation having one or more wavelengths selected from the range of 200-380 nm,, 'a first silicone layer,'} wherein the first layer element is arranged at a first side of the first surface,', 'wherein the first layer element is associated by a chemical binding with the first surface directly or via a first intermediate layer,', 'wherein the first intermediate layer is transmissive for UV radiation having one or more wavelengths selected from the range of 200-380 nm,', 'wherein the first layer ...

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Номер записи: 63
18-06-2020 дата публикации

METHOD FOR PREPARING INVERSE OPAL COLLOIDAL CRYSTAL FIBERS

Номер: US20200190704A1
Автор: Ding Chen, LI Tingting, Yuan Wei, ZHANG Ke-Qin
Принадлежит:

The present invention discloses a method for preparing inverse opal photonic crystal fibers. In this method, by means of vertical deposition of colloidal spheres (micron scale or nanoscale), of polystyrene shell-core structured spheres and silica particles, the inverse opal colloidal crystal fiber stripes having a length of about 3.5 cm as well as an adjustable width and thickness is obtained. The invention provides a convenient method and achieves inverse opal photonic crystal fiber stripes with a high yield and a controllable size, and there is no crack on the surface of the fibers or inside the fibers. Furthermore, the inverse opal photonic crystal stripes of the invention can be peeled off from the surface of a glass slide and used conveniently. 1. A method for preparing non-crack inverse opal colloidal crystal fibers , comprising steps of:(1) forming a layer of a copolymer of methyl methacrylate (MMA) and acrylic acid (AA) on the surface of polystyrene (St) microspheres by a microemulsion method, to obtain shell-core structured P-(St-MMA-AA) microspheres with a polystyrene core;(2) uniformly mixing a 0.3%-1.0% w/v dispersion solution of the shell-core structured P-(St-MMA-AA) microspheres with silica nanoparticles by a weight ratio of 1:0.4-0.6 to form a colloidal solution, and obtaining colloidal crystal fiber stripes after vertical deposition of the colloidal solution and drying the colloidal solution in an oven under 50° C.; and(3) sintering the colloidal crystal fiber stripes in an oven under 500° C. for 2 hrs to remove the shell-core structured P-(St-MMA-AA) microspheres, to get the inverse opal colloidal crystal fibers,wherein the silica nanoparticles are irregular solid particles, and have a refractive index of 1.56;wherein the inverse opal colloidal crystal fibers have a length of about 3.5 cm and a width of 50 μm-200 μm; andwherein the inverse opal colloidal crystal fibers do not have crack on surface and in interior thereof.2. The method as claimed in ...

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Номер записи: 64
18-06-2020 дата публикации

PLASTIC SCINTILLATING FIBER AND METHOD FOR PRODUCING SAME

Номер: US20200191980A1
Автор: IWAKAWA Ryuichi, Shinji Osamu, SONOBE Minoru
Принадлежит: KURARAY CO., LTD.

Provided is a plastic scintillating fiber having a circular cross-section, in which a reduction in light emission amount depending on the radiation crossing position can be suppressed. A plastic scintillating fiber according to one aspect of the present invention is a plastic scintillating fiber having a circular cross-section, the plastic scintillating fiber including: a core which contains a fluorescent agent having ultraviolet absorption and luminescence properties; and a clad which covers the outer peripheral surface of the core and has a lower refractive index than that of the core. The concentration of the fluorescent agent in the core is distributed such that it increases from the center toward the outer periphery in a cross-section of the core. 1. A plastic scintillating fiber having a circular cross-section , comprising:a core that comprises a fluorescent agent having ultraviolet absorption and luminescence properties; anda clad that covers an outer peripheral surface of the core and has a lower refractive index than a refractive index of the core,wherein a concentration of the fluorescent agent in the core increases from a center toward an outer periphery in a cross-section of the core.2. The plastic scintillating fiber according to claim 1 , wherein the concentration of the fluorescent agent increases discontinuously in two or more steps from the center toward the outer periphery in the cross-section of the core.3. The plastic scintillating fiber according to claim 1 , wherein the concentration of the fluorescent agent increases continuously from the center toward the outer periphery in the cross-section of the core.4. The plastic scintillating fiber according to claim 1 , wherein the clad has a multi-clad structure comprising:an inner clad; andan outer clad that covers an outer peripheral surface of the inner clad and has a lower refractive index than a refractive index of the inner clad.5. A method of producing a plastic scintillating fiber that ...

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Номер записи: 65
20-07-2017 дата публикации

POLYMER CLAD FIBER FOR EVANESCENT COUPLING

Номер: US20170205583A1
Автор: Bennett Kevin Wallace, Evans Alan Frank, Li Ming-Jun, Zakharian Aramais Robert
Принадлежит:

A fiber to waveguide coupler is provided that includes an optical fiber having a core and a cladding. The cladding includes an inner cladding and an outer cladding with a polymer. At least one of the core and inner cladding defines a substantially flat surface parallel with an axis of the optical fiber. The optical fiber defines a stripped portion substantially free of outer cladding configured to expose the at least one substantially flat surface of the core or inner cladding. A waveguide is configured to be evanescently coupled with the exposed at least one substantially flat surface of the core or inner cladding. 1. A fiber to waveguide coupler comprising:an optical fiber having a core and a cladding, the cladding comprising an inner cladding and an outer cladding comprising a polymer, at least one of the core and inner cladding defining a substantially flat surface parallel with an axis of the optical fiber, wherein the optical fiber defines a stripped portion substantially free of the outer cladding configured to expose the at least one substantially flat surface of the core or inner cladding; anda waveguide configured to evanescently couple with the fiber through the exposed at least one substantially flat surface of the core or inner cladding.2. The fiber to waveguide coupler of claim 1 , wherein the waveguide is a planar waveguide positioned on a photonic integrated circuit.3. The fiber to waveguide coupler of claim 1 , wherein the core and the inner cladding each define a substantially flat surface.4. The fiber to waveguide coupler of claim 3 , wherein the substantially flat surface of the core and the substantially flat surface of the inner cladding are offset.5. The fiber to waveguide coupler of claim 3 , wherein the substantially flat surface of the core and the substantially flat surface of the inner cladding are aligned with one another.6. The fiber to waveguide coupler of claim 1 , wherein only the inner cladding defines a substantially flat surface.7 ...

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Номер записи: 66
27-07-2017 дата публикации

Optical Coupling Using Plastic Optical Fiber

Номер: US20170212307A1
Автор: JIANG Jia
Принадлежит:

An optical coupler has a plastic optical fiber and a curved support member for mechanically supporting the plastic optical fiber at a predetermined bend radius. The plastic optical fiber can be made of perfluorinated polymer. The plastic optical fiber can be curved at a bend radius of less than 10 mm. This enables compact packaging of the coupler. 1. An optical coupler comprising:a plastic optical fiber; anda curved support member for mechanically supporting the plastic optical fiber at a predetermined bend radius.2. The optical coupler of wherein the plastic optical fiber is made of perfluorinated polymer.3. The optical coupler of wherein the plastic optical fiber is curved at a bend radius of less than 10 mm.4. The optical coupler of wherein the plastic optical fiber adheres to a photonic integrated circuit by a polymer glue that has substantially a same thermal expansion coefficient as the plastic optical fiber to thereby lessen thermally induced strain.5. The optical coupler of further comprising a silicon grating coupler claim 1 , wherein the plastic optical fiber is angled to couple with the silicon grating coupler.6. The optical coupler of comprising a plurality of plastic optical fibers packaged side-by-side as a fiber ribbon and wherein the curved support member mechanically supports the ribbon of plastic optical fibers at a common predetermined bend radius.7. The optical coupler of comprising a plurality of plastic optical fibers packaged in a two-dimensional array and wherein the curved support member mechanically supports the two-dimensional array of plastic optical fibers at a common predetermined bend radius.8. The optical coupler of comprising a plurality of plastic optical fibers packaged side-by-side as a fiber ribbon and wherein the curved support member mechanically supports the ribbon of plastic optical fibers at a common predetermined bend radius.9. The optical coupler of comprising a plurality of plastic optical fibers packaged in a two- ...

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Номер записи: 67
25-06-2020 дата публикации

METHOD OF MAKING A DISTRIBUTED OPTICAL FIBER SENSOR HAVING ENHANCED RAYLEIGH SCATTERING AND ENHANCED TEMPERATURE STABILITY, AND MONITORING SYSTEMS EMPLOYING SAME

Номер: US20200200968A1
Автор: BURIC MICHAEL P., CHEN PENG KEVIN, Huang Sheng, OHODNICKI PAUL R., YAN AIDONG
Принадлежит: University of Pittsburgh - of the Commonwealth System of Higher Education

A method of making an optical fiber sensor device for distributed sensing includes generating a laser beam comprising a plurality of ultrafast pulses, and focusing the laser beam into a core of an optical fiber to form a nanograting structure within the core, wherein the nanograting structure includes a plurality of spaced nanograting elements each extending substantially parallel to a longitudinal axis of optical fiber. Also, an optical fiber sensor device for distributed sensing includes an optical fiber having a longitudinal axis, a core, and a nanograting structure within the core, wherein the nanograting structure includes a plurality of spaced nanograting elements each extending substantially parallel to the longitudinal axis of the optical fiber. Also, a distributed sensing method and system and an energy production system that employs such an optical fiber sensor device. 1. A method of making an optical fiber sensor device structured for distributed sensing , comprising:generating a laser beam comprising a plurality of ultrafast pulses; andfocusing the laser beam into a core of an optical fiber to form a nanograting structure within the core, wherein the nanograting structure includes a plurality of spaced nanograting elements each extending substantially parallel to a longitudinal axis of optical fiber.2. The method according to claim 1 , wherein the plurality of ultrafast pulses comprises a plurality of femtosecond ultrafast pulses.3. The method according to claim 2 , wherein each of the femtosecond ultrafast pulses is a sub-μJ laser pulse.4. The method according to claim 1 , further comprising causing the laser beam and the optical fiber to be moved relative to one another during focusing such that the nanograting structure is formed within a longitudinally extending portion of the core.5. The method according to claim 4 , wherein a position of the laser beam in a longitudinal direction is stationary and wherein the optical fiber is caused to move ...

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Номер записи: 68
04-07-2019 дата публикации

RESIN OPTICAL WAVEGUIDE AND COMPOSITE OPTICAL WAVEGUIDE

Номер: US20190204503A1
Автор: OHARA Seiki, TAKENOBU Shotaro
Принадлежит: AGC Inc.

The present invention relates to a resin optical waveguide including a core and a cladding having a refractive index lower than that of the core, in which the resin optical waveguide includes, along a light propagation direction, a coupling part at which at least a part of the core is exposed and an optical waveguide part where the whole circumference of the core is covered with the cladding, and the core has a width Wb at an end part of the coupling part at a side of the optical waveguide part being larger than a width Wa of the core at an end part of the coupling part at a side opposite to the optical waveguide part. 1. A resin optical waveguide comprising a core and a cladding having a refractive index lower than that of the core ,wherein the resin optical waveguide comprises, along a light propagation direction, a coupling part at which at least a part of the core is exposed, and an optical waveguide part where the whole circumference of the core is covered with the cladding, andthe core has a width Wb at an end part of the coupling part at a side of the optical waveguide part being larger than a width Wa of the core at an end part of the coupling part at a side opposite to the optical waveguide part.2. The resin optical waveguide according to claim 1 ,wherein the width Wa of the core is 4 μm or more.3. The resin optical waveguide according to claim 1 ,wherein the width Wa of the core and the width Wb of the core satisfy the relation of (Wb/Wa)≥1.1.4. The resin optical waveguide according to claim 1 ,wherein the width Wb of the core is 10 μm or less.5. The resin optical waveguide according to claim 1 ,wherein the core is composed of a first core part, a third core part and a second core part in this order along the light propagation direction in the coupling part,the first core part includes the end part of the coupling part at the side opposite to the optical waveguide part,the second core part includes the end part of the coupling part at the side of the ...

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Номер записи: 69
04-08-2016 дата публикации

OPTICAL FIBER RE-COATING DEVICE

Номер: US20160221025A1
Автор: Kanda Yoshiharu, YOKOTA Koichi, Yoshida Hiroki
Принадлежит: FUJIKURA LTD.

An optical fiber re-coating device of the invention includes an optical fiber coater that cures resin and coats a coating-removed portion of an optical fiber therewith. The optical fiber re-coating device includes: a resin reservoir tank that stores the resin which is before subjected to curing; a pump that supplies the resin stored in the resin reservoir tank to an optical fiber coater; and an air bubble separator that separates air bubbles included in the resin from the pump therefrom, sends the resin from which the air bubbles are separated to the optical fiber coater, and returns the resin including the separated air bubbles to the resin reservoir tank. 1. An optical fiber re-coating device comprising an optical fiber coater that cures resin and coats a coating-removed portion of an optical fiber therewith , the optical fiber re-coating device comprising:a resin reservoir tank that stores the resin which is before subjected to curing;a pump that supplies the resin stored in the resin reservoir tank to an optical fiber coater; andan air bubble separator that separates air bubbles included in the resin from the pump therefrom, sends the resin from which the air bubbles are separated to the optical fiber coater, and returns the resin including the separated air bubbles to the resin reservoir tank.2. The optical fiber re-coating device according to claim 1 , whereinthe air bubble separator includes a resin accumulator that has an upper position and a lower position and is a space, the upper position is connected to a resin flow-in passage into which the resin flows from the pump, the lower position is connected to a resin supply passage which sends the resin to the optical fiber coater, and the space is connected to a resin collection passage that is used to return the resin including the separated air bubbles to the resin reservoir tank, andthe resin collection passage is located upper than the resin supply passage.3. The optical fiber re-coating device according ...

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Номер записи: 70
11-07-2019 дата публикации

OPTICAL RECEPTACLE AND OPTICAL TRANSCEIVER

Номер: US20190212501A1
Автор: AGATSUMA Hirotsugu, HAKOZAKI Satoshi, KANEYUKI Satoshi, SATO Hiroki, SUZUKI Arato, TOMINAGA Kohei
Принадлежит:

An optical receptacle includes a fiber stub, a block, and a first elastic member. The fiber stub includes an optical fiber, and a ferrule provided on one end side of the optical fiber. The block is separated from the ferrule and has one end surface, an other end surface, and a through-hole extending from the one end surface to the other end surface. A portion of the optical fiber protrudes from the ferrule and is inserted into the through-hole. The first elastic member fixes the optical fiber in the through-hole. The portion of the optical fiber includes first to third portions. The second portion is provided between the first portion and the third portion. A core diameter at the first portion is smaller than a core diameter at the third portion. A core diameter at the second portion increases from the first portion toward the third portion. 1. An optical receptacle , comprising: an optical fiber including a core and cladding, the core being for transmitting light, and', 'a ferrule provided on one end side of the optical fiber;, 'a fiber stub including'}a block separated from the ferrule, the block having one end surface, an other end surface on a side opposite to the one end surface, and a through-hole extending from the one end surface to the other end surface, a portion of the optical fiber protruding from the ferrule and being inserted into the through-hole from the one end surface side; anda first elastic member fixing the optical fiber in the through-hole,the portion of the optical fiber protruding from the ferrule including a first portion, a second portion, and a third portion,the first portion being provided on the other end surface side of the third portion,the second portion being provided between the first portion and the third portion,a core diameter at the first portion being smaller than a core diameter at the third portion,a core diameter at the second portion increasing from the first portion toward the third portion,the first elastic member being ...

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Номер записи: 71
12-08-2021 дата публикации

POLYMER WAVEGUIDE ACCOMMODATING DISPERSED GRAPHENE AND METHOD FOR MANUFACTURING THE SAME, AND LASER BASED ON THE POLYMER WAVEGUIDE

Номер: US20210247565A1
Автор: RYU Bowon, SONG Yong-Won
Принадлежит:

Embodiments relate to a polymer waveguide including a substrate, a cladding layer made of a first polymer, formed on the substrate, wherein a first monomer is polymerized into the first polymer, and the cladding layer has a groove for the waveguide by removing part of the cladding layer, and a core accommodating graphene therein, formed on the groove, a method for manufacturing the same, and a passively mode-locked laser based on the polymer waveguide. 1. A method for manufacturing a polymer waveguide accommodating dispersed graphene , the method comprising:forming a cladding layer made of a first polymer on a substrate;removing part of the cladding layer to form a groove for the waveguide; andforming a core accommodating dispersed graphene therein on the groove.2. The method for manufacturing a polymer waveguide accommodating dispersed graphene according to claim 1 , wherein forming the core comprises:coating a graphene dispersed solution on the groove; andcuring the graphene dispersed solution to form the core, andwherein the graphene dispersed solution is a mixed solution in which a suspension containing graphene dissolved in an organic solvent that dissolves a polar molecule is mixed with a second monomer solution that will be polymerized into a polymer.3. The method for manufacturing a polymer waveguide accommodating dispersed graphene according to claim 2 , wherein the mixed solution has a graphene concentration lower than a threshold concentration at which the graphene is kept in a dispersed state.4. The method for manufacturing a polymer waveguide accommodating dispersed graphene according to claim 3 , wherein the core accommodating the dispersed graphene is configured to have a higher effective refractive index than the cladding layer.5. The method for manufacturing a polymer waveguide accommodating dispersed graphene according to claim 4 , wherein the threshold concentration is 0.95×10wt % to 1.05×10wt %.6. The method for manufacturing a polymer waveguide ...

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Номер записи: 72
20-08-2015 дата публикации

OPTICAL CONNECTION COMPONENT MANUFACTURING APPARATUS AND HIGH POLYMER MATERIAL COAT FORMING APPARATUS

Номер: US20150231662A1
Автор: Hashimoto Nobuhiro, Suzuki Masayoshi
Принадлежит: TOMOEGAWA CO., LTD.

Disclosed is an optical connection component manufacturing apparatus that manufactures an optical connection component in which a refractive index matching body is attached to a front end face of an optical fiber. The optical connection component manufacturing apparatus includes: a holding unit that includes a holding face holding a refractive index matching liquid including the refractive index matching body; a dispenser that supplies the refractive index matching liquid to the holding face; and a static electricity generating device that charges the optical fiber so that the refractive index matching liquid held on the holding face is adsorbed onto the front end face of the optical fiber, wherein the holding face has an outer peripheral edge connected in a curved line. 1. An optical connection component manufacturing apparatus that manufactures an optical connection component in which a refractive index matching body is attached to a front end face of a linear optical member , the optical connection component manufacturing apparatus comprising:a holding unit that includes a holding face holding a refractive index matching liquid including the refractive index matching body;a supply unit that supplies the refractive index matching liquid to the holding face; anda charging unit that charges the optical member so that the refractive index matching liquid held on the holding face is adsorbed onto the front end face of the optical member,wherein the holding face has an outer peripheral edge connected in a curved line.2. The optical connection component manufacturing apparatus according to claim 1 , further comprising:a support member that supports the optical member such that the front end face faces the refractive index matching liquid in a direction intersecting a thickness direction of the refractive index matching liquid with the front end face of the optical member being spaced from the refractive index matching liquid held on the holding face,wherein the supply ...

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Номер записи: 73
16-08-2018 дата публикации

A FLEXIBLE LINEAR LIGHT EMITTING ELEMENT AND A METHOD OF PRODUCING THE SAME

Номер: US20180231711A1
Автор: KANAMORI Naoaki
Принадлежит: FUKUVI CHEMICAL INDUSTRY CO., LTD.

A flexible linear light emitting element to be flexibly bent along the shape of an object to be decorated or to be bent in accordance with a linearly represented decorative letter or decorative pattern of any kind and to excel in light emitting performance such as luminance as well as a method of producing the same. The optical fiber type linear light emitting element includes a bar-shaped extrusion-molded article in which a clad layer made from a fluorine resin is integrally formed over the periphery of a cored layer made from an acrylic thermoplastic elastomer; and a block copolymer of methyl methacrylate and butyl acrylate or a block copolymer of methyl acrylate and butyl acrylate, the flexural modulus of elasticity (according to ASTM D790) of the copolymers ranging from 50 to 500 MPa, is adopted for the material of the cored layer. 1. A flexible linear light emitting element which is a bar-shaped extrusion-molded article with a clad layer essentially made from a fluorine resin integrally formed over a periphery of a cored layer made from an acrylic thermoplastic elastomer , wherein the cored layer is made from one of a block copolymer comprising methyl methacrylate and butyl acrylate and a block copolymer comprising methyl acrylate and butyl acrylate.2. The flexible linear light emitting element according to claim 1 , wherein the cored layer is made from an acrylic thermoplastic elastomer whose MFR (Melt Flow Rate) ranges from 2 to 10 g/10 min under test conditions of 190 degrees Centigrade in temperature and 5 kg in load; and the clad layer is made from a fluorine resin whose melting point is 230 degrees centigrade or lower.3. The flexible linear light emitting element according to claim 1 , wherein the cored layer is made from the block copolymer comprising methyl methacrylate and butyl acrylate.4. The flexible linear light emitting element according to claim 1 , wherein a thickness of the clad layer ranges from 0.1 to 1 mm; and 0.01 to 5 parts by weight of a ...

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Номер записи: 74
25-07-2019 дата публикации

BAND-GAP TUNABLE ELASTIC OPTICAL MULTILAYER FIBERS

Номер: US20190227224A1
Автор: Aizenberg Joanna, HOWE Robert D., KOLLE Mathias, VUKUSIC Peter
Принадлежит:

The rolled photonic fibers presents two codependent, technologically exploitable features for light and color manipulation: regularity on the nanoscale that is superposed with microscale cylindrical symmetry, resulting in wavelength selective scattering of light in a wide range of directions. The bio-inspired photonic fibers combine the spectral filtering capabilities and color brilliance of a planar Bragg stack compounded with a large angular scattering range introduced by the microscale curvature, which also decreases the strong directional chromaticity variation usually associated with flat multilayer reflectors. Transparent and elastic synthetic materials equip the multilayer interference fibers with high reflectance that is dynamically tuned by longitudinal mechanical strain. A two-fold elongation of the elastic fibers results in a shift of reflection peak center wavelength of over 200 nm. 139-. (canceled)40. A suture filament comprising:a central core extending along the length of the filament, wherein the central core has a diameter in the range of 10 μm to 500 μm;a first polymer layer having a first refractive index; anda second layer having a second refractive index, wherein the first and second polymer layers are positioned adjacent to one another to form a bilayer and wherein the first and second refractive indices are selected to provide interference of light reflected from the optical interfaces between the first and second layers;wherein the bilayer is concentrically wound around the central core to provide a multilayer cladding having a jelly roll structure and form a tunable band-gap multilayer fiber having a first color at zero axial strain,wherein the suture filament changes to a second color in response to an axial extension of the filament.41. The suture filament of claim 40 , wherein the tunable band-gap multilayer fiber is spliced into the filament.42. The suture filament of claim 40 , wherein the change in color is related to the amount of ...

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Номер записи: 75
25-08-2016 дата публикации

BIODEGRADABLE OPTICAL FIBERS AND METHODS OF USE THEREOF

Номер: US20160245990A1
Автор: Boyden Edward S., Della Rocca Gregory J., Derdeyn Colin P., Hyde Roderick A., Ishikawa Muriel Y., JR. Lowell L., Kare Jordin T., Leuthardt Eric C., Myhrvold Nathan P., Santiago Paul, Stewart Todd J., Tegreene Clarence T., Wood, Wood Victoria Y.H.
Принадлежит:

A device and methods of use thereof are disclosed herein for a biodegradable optical fiber and a method of producing a device including a biodegradable optical fiber. A device is disclosed that includes: a biodegradable optical fiber including; a biodegradable optically functional inner fiber including an optically-transmitting cladding in contact with and surrounding an optically-transmitting core, wherein the inner fiber is biodegradable on a first time scale; and an outer layer in contact with and surrounding the optically-transmitting cladding, wherein the outer layer is biodegradable on a controllably-defined delayed time scale, and the controllably-defined delayed time scale is of greater duration than the first time scale. 1. A device comprising:a biodegradable optical fiber including:a biodegradable optically functional inner fiber including an optically-transmitting cladding in contact with and surrounding an optically-transmitting core, wherein the inner fiber is biodegradable on a first time scale; andan outer layer in contact with and surrounding the optically-transmitting cladding, wherein the outer layer is biodegradable on a controllably-defined delayed time scale, and the controllably-defined delayed time scale is of greater duration than the first time scale.2. (canceled)3. The device of claim 1 , wherein the outer layer is less optically transmissive than the cladding or the core.4. The device of claim 1 , wherein the outer layer has an index of refraction greater than an index of refraction of the cladding.5. The device of claim 1 , wherein a composition of the outer layer determines rate of biodegradation at the controllably-defined delayed time scale of the outer layer.6. The device of claim 1 , wherein thickness of the outer layer determines rate of biodegradation at the controllably-defined delayed time scale of the outer layer.7. The device of claim 1 , wherein the optically functional inner fiber is biodegradable on a substantially ...

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Номер записи: 76
10-09-2015 дата публикации

Waveguide assisted solar energy harvesting

Номер: US20150255657A1
Автор: Faramarz Farahi
Принадлежит: UNIVERSITY OF NORTH CAROLINA AT CHARLOTTE

A photovoltaic (PV) system includes a fiber optical waveguide comprising an active core that hosts material configured to absorb and emit light, a cladding layer surrounding the active core, the cladding layer being configured to allow ambient light to pass through the cladding layer, and an exit port located proximate an end of the waveguide. The PV system further comprises one or more solar cells disposed at the exit port of the waveguide. The waveguide is configured to guide light to the one or more solar cells. Another photovoltaic (PV) system includes a waveguide comprising an active cladding layer hosting material configured to absorb and emit light, and a core layer configured to confine light emitted by the active cladding layer. The PV system further includes one or more solar cells disposed proximate the waveguide. The core layer is configured to guide light to the one or more solar cells.

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Номер записи: 77
01-09-2016 дата публикации

Self referenced intensity-based polymer optical fibre displacement sensor

Номер: US20160252344A1
Автор: WAN Kai Tai
Принадлежит:

The present invention provides a self-reference and tunable optical displacement transducer comprising an optical splitter, at least one transducing element and a self-reference element, where each of said transducing element and said self-reference element comprises a pair of optical fibers and a reception assembly between each pair of the optical fibers. One of the reception assembly and the second optical fiber of the transducing element are displaceable along the same axis and relatively with respect to each other while another reception assembly and the second optical fiber of the self-reference element are non-displaceable. Incorporation of the self-reference element into the present transducer enables monitoring and measuring crack size and integral strength of a structure without being affected by other environmental or external factors. 1. A self-referenced and tunable optical displacement transducer comprising an optical splitter , at least one transducing element and a self-reference element;said optical splitter comprising one inlet and at least two outlets, an optical fiber in the inlet further comprising at least one light source coupled for transmission and split into at least two separated optical paths in the outlets and the proportion of light intensity in each of the outlets compared with the inlet is fixed;each of said at least one transducing element comprising a first optical fiber and a second optical fiber, said first optical fiber of the transducing element comprising a first end face aligned along an axis and positioned in one of the outlets of the optical splitter, and a second end face from the outlet of the optical splitter aligned along an axis and positioned with a small gap between said second end face of the first optical fiber and a first end face of a first reception assembly, the small gap at the first reception assembly being filled by a material comprising transparent solid, liquid and gas;said transducer further comprising at ...

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Номер записи: 78
20-11-2014 дата публикации

OPTICAL FIBER COATING COMPOSITIONS WITH NON-CURABLE REINFORCING AGENTS

Номер: US20140341524A1
Автор: Bookbinder Dana Craig, Fabian Michelle Dawn, McCarthy Kevin Robert, Niu Weijun, Schissel David Neal, Winningham Michael James
Принадлежит: CORNING INCORPORATED

A coating composition including a reinforcing agent. The coating composition may include one or more radiation-curable monofunctional monomers, one or more radiation-curable multifunctional monomers or oligomers, a photoinitiator, and a reinforcing agent. The monofunctional monomers, multifunctional monomers, and multifunctional oligomers may include acrylate groups. The reinforcing agent may be an acrylic co-polymer that includes two or more repeat units. At least one of the repeat units includes chemical groups that enable self-association of the acrylic co-polymer. Self-association of the acrylic co-polymer may improve the tensile strength of coatings formed from the coating compositions. 1. An optical fiber coating composition comprising:a radiation-curable monomer;a photoinitiator; andan acrylic co-polymer, said co-polymer including a first repeat unit derived from a (meth)acrylate monomer and a second repeat unit derived from an ethylenically unsaturated monomer, said (meth)acrylate and ethylenically unsaturated monomers differing in chemical composition.2. The coating composition of claim 1 , wherein said radiation-curable monomer includes a (meth)acrylate monomer.3. The coating composition of claim 1 , wherein said radiation-curable monomer includes a multifunctional (meth)acrylate monomer.4. The coating composition of claim 3 , wherein said multifunctional (meth)acrylate monomer includes a polyol di(meth)acrylate.5. The coating composition of claim 1 , wherein said radiation-curable monomer lacks groups capable of reacting to form urethane linkages.6. The coating composition of claim 1 , wherein said ethylenically unsaturated monomer includes a hydrogen bond donor group.7. The coating composition of claim 6 , wherein said ethylenically unsaturated monomer further includes a hydrogen bond acceptor group.8. The coating composition of claim 7 , wherein said hydrogen bond donor group is an N—H group claim 7 , an O—H group claim 7 , or a —COH group.9. The ...

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Номер записи: 79
23-09-2021 дата публикации

MICROSTRUCTURED MATERIALS

Номер: US20210292934A1
Автор: Holmes, JR. Larry R., JR. Patrick M., Rodriguez Ricardo X., Toal, WETZEL ERIC D.
Принадлежит:

A thermoplastic filament comprising multiple polymers of differing flow temperatures in a regular geometric arrangement, and a method for producing such a filament, are described. Because of the difference in flow temperatures, there exists a temperature range at which one polymer is mechanically stable while the other is flowable. This property is extremely useful for creating thermoplastic monofilament feedstock for three-dimensionally printed parts, wherein the mechanically stable polymer enables geometric stability while the flowable polymer can fill gaps and provide strong bonding and homogenization between deposited material lines and layers. These multimaterial filaments can be produced via thermal drawing from a thermoplastic preform, which itself can be three-dimensionally printed. Furthermore, the preform can be printed with precisely controlled and complex geometries, enabling the creation of monofilament and fiber with unique decorative or functional properties. 1. A filament or preform comprising at least a first thermoplastic polymer and a second thermoplastic polymer , the first thermoplastic polymer and the second thermoplastic polymer physically associated in a geometric arrangementsaid filament or preform further comprising at least one orifice extending the length of said filament or preform and a thread comprising a third material that is different from said first thermoplastic polymer and said second thermoplastic polymer disposed in said orifice in said filament or preform.2. The filament or preform of wherein said filament or preform is printed.3. The filament or preform of claim 1 , where said thread is an optical fiber.4. The filament or preform of claim 3 , where said thread is made of glass.5. The filament or preform of claim 3 , where said thread is made of polymer.6. The filament or preform of claim 5 , wherein said thread is made of a thermoplastic with a flow temperature at least 20 degrees Celsius higher than the higher of the flow ...

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Номер записи: 80
23-09-2021 дата публикации

METHOD OF MAKING HINGED SELF-REFERENCING FABRY-PÉROT CAVITY SENSORS

Номер: US20210294039A1
Автор: Chandrahalim Hengky, Williams Jeremiah Q.
Принадлежит:

A method is provided for fabricating a passive optical sensor on a tip of an optical fiber. The method includes perpendicularly cleaving a tip of an optical fiber and mounting the tip of the optical fiber in a specimen holder of a photosensitive polymer three-dimensional micromachining machine. The method includes forming a three-dimensional microscopic optical structure within the photosensitive polymer that comprises a two cavity Fabry-Perot Interferometer (FPI) having a hinged optical layer that is pivotally coupled to a suspended structure. The method includes removing an uncured portion of the photosensitive polymer using a solvent. The method includes depositing a reflective layer on a mirror surface of the hinged optical layer. The method includes positioning the pivotally hinged optical layer to a closed position with the suspended structure, aligning the mirror surface with the cleaved tip of the optical fiber. 1. A method for fabricating a passive optical sensor on a tip of an optical fiber , the method comprising:perpendicularly cleaving a tip of an optical fiber;mounting the tip of the optical fiber in a specimen holder of a photosensitive polymer three-dimensional micromachining machine; andforming a three-dimensional microscopic optical structure within the photosensitive polymer that comprises a two cavity Fabry-Pérot Interferometer (FPI) having a hinged optical layer that is pivotally coupled to a suspended structure;removing an uncured portion of the photosensitive polymer using a solvent;depositing a reflective layer on a mirror surface of the hinged optical layer; andpositioning the pivotally hinged optical layer to a closed position with the suspended structure, aligning the mirror surface with the cleaved tip of the optical fiber.2. The method of claim 1 , wherein forming the three-dimensional microscopic optical structure comprises performing a two-photon polymerization process of a photosensitive polymer using a three-dimensional ...

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Номер записи: 81
08-09-2016 дата публикации

LIGHTING PLASTIC OPTICAL FIBER AND METHOD OF MANUFACTURING SAME

Номер: US20160259125A1
Автор: Kamei Ryuichi, Maeda Hironobu, SATO Shinji
Принадлежит:

An optical fiber is a linear radiator uniform in the longer direction thereof, and a lighting device uses the optical fiber. The optical fiber is a lighting fiber having a core and a cladding. In the fiber, as the cladding, there is used a polymer obtained by polymerizing a polymerizing ingredient containing 90% or more by weight of vinylidene fluoride, and the cladding has a crystallinity of 45% to 52%. 19-. (canceled)10. A lighting plastic optical fiber comprising a core and a cladding and which lights from a side surface of the fiber , wherein the cladding comprises a polymer obtained by polymerizing a polymerizing ingredient containing 90% or more by weight of vinylidene fluoride , and the cladding has a crystallinity of 45% to 52%.11. The lighting plastic optical fiber according to claim 10 , wherein the cladding has a thickness of 3.0 μm to 15.0 μm.12. A method of manufacturing the lighting plastic optical fiber according to claim 10 , comprising: subjecting a material which is to be a core and a material which is to be a cladding to conjugate melt spinning claim 10 , wherein the temperature (T) for the conjugate melt spinning and the discharge rate (W) of the polymer of the cladding satisfy Expression (1):{'br': None, 'i': '≦T/W≦', '2801500\u2003\u2003(1)'}where T is the temperature (° C.) for the spinning; andW is the discharge rate (g/minute) of the polymer of the cladding per line of the fiber.13. A lighting plastic optical fiber bundle claim 10 , comprising a plurality of bundled lines of the lighting plastic optical fiber according to .14. An optical fiber lighting device claim 10 , comprising the lighting plastic optical fiber according to claim 10 , and a light source connected to at least one end of the plastic optical fiber.15. An optical fiber sensor claim 10 , comprising claim 10 , in at least one portion thereof claim 10 , the lighting plastic optical fiber according to .16. An optical fiber sheet claim 10 , comprising claim 10 , in at least one ...

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Номер записи: 82
06-09-2018 дата публикации

Converter Plate for Producing Polychromatic Light

Номер: US20180254388A1
Автор: Herzig Justin, Kishinevski Anatoly
Принадлежит: Anatoly Glass, LLC.

A converter plate includes an array of optical fibers arranged axially parallel to each other. The optical fibers have optical properties selected to convert light from a light-emitting diode entering the optical fibers from one end of the array of optical fibers to light of a different wavelength exiting the fibers from another end of the array of optical fibers. The optical properties of some of the optical fibers differ from the optical properties of others of the optical fibers such that the light exiting the some of the optical fibers has a wavelength different from that of the light exiting the others of the optical fibers. The converter plate is manufactured by providing the optical fibers and combining the optical fibers into a bundle, the optical fibers being arranged axially parallel to each other. The bundle of optical fibers is drawn to attenuate the bundle of fibers into a secondary fiber having a reduced cross section. The secondary fiber is wafered into a converter plate that includes an array of the optical fibers arranged axially parallel to each other. 1. A converter plate comprising an array of optical fibers arranged axially parallel to each other , the optical fibers having optical properties selected to convert light from a light-emitting diode entering the optical fibers from one end of the array of optical fibers to light of a different wavelength exiting the fibers from another end of the array of optical fibers , the optical properties of some of the optical fibers differing from the optical properties of others of the optical fibers such that the light exiting the some of the optical fibers has a wavelength different from that of the light exiting the others of the optical fibers.2. A converter plate in accordance with wherein at least some the optical fibers are unclad.3. A converter plate in accordance with wherein at least some of the optical fibers are clad with a cladding.4. A converter plate in accordance with wherein the cladding is ...

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Номер записи: 83
07-10-2021 дата публикации

SELF-HEALING OPTICAL FIBERS AND THE COMPOSITIONS USED TO CREATE THE SAME

Номер: US20210309567A1
Автор: Fauvell Thomas, He Meng, Urruti Eric
Принадлежит:

Disclosed herein are compositions for coating an optical fiber containing an optional reactive monomer and/or oligomer, a self-healing component with self-healing moieties, an initiator component, and optionally an additive component. The self-healing component preferably includes polymerizable moieties. Such compositions contain greater than 30% by weight of the self-healing component, and/or greater than 0.015 equivalents of self-healing moieties per 100 g of the composition. Also disclosed herein are coated optical fibers having a glass fiber, at least one coating layer and an optional ink layer, which are configured to possess self-healing properties and/or stress relaxation behavior. Further disclosed are methods for coating self-healing optical fibers, and optical fiber cables comprising a one or more self-healing coated optical fibers. 1. A composition for coating an optical fiber comprising:optionally, a reactive monomer and/or oligomer component;a self-healing component consisting of molecules possessing one or more self-healing moieties and optionally one or more polymerizable moieties;an initiator component; andoptionally, an additive component; wherein(a) the self-healing component is present, relative to the weight of the entire composition, in an amount greater than 30 wt. %; or(b) the composition possesses greater than 0.015 equivalents of self-healing moieties per 100 g of the composition.2. The composition according to claim 1 , wherein the self-healing component is present claim 1 , relative to the weight of the entire composition claim 1 , in an amount from 30-80 wt. %; andthe composition possesses from 0.015 to 0.10 equivalents of self-healing moieties per 100 g of the composition.3. The composition according to claim 1 , wherein the composition contains less than 5 wt. % of solvent claim 1 , wherein the weight content of solvents may be determined via a suitable method such as size exclusion chromatography (SEC) method.4. The composition ...

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Номер записи: 84
15-09-2016 дата публикации

OPTICAL WAVEGUIDE, AND OPTO-ELECTRIC HYBRID BOARD

Номер: US20160266310A1
Автор: TANAKA Naoyuki
Принадлежит: NITTO DENKO CORPORATION

An optical waveguide is provided, which includes a core layer and a cladding layer, wherein at least one of the core layer and the cladding layer is formed from a transparent resin composition containing a phosphorus-containing epoxy resin and a photopolymerization initiator. The optical waveguide and an opto-electric hybrid board including the optical waveguide are excellent in flame resistance, and permit thickness reduction thereof. 1. An optical waveguide comprising:a core layer; anda cladding layer;wherein at least one of the core layer and the cladding layer is formed from a transparent resin composition comprising a phosphorus-containing epoxy resin and a photopolymerization initiator.2. The optical waveguide according to claim 1 , wherein the optical waveguide does not include a flame resistant cover layer.5. An opto-electric hybrid board comprising:a substrate;an electric wiring provided on the substrate; and{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'an optical waveguide provided on the substrate, the optical waveguide being the optical waveguide according to .'} This application is a continuation of International Application No. PCT/JP2014/81144, filed on Nov. 26, 2014, which claims priority to Japanese Patent Application No. 2013-251255, filed on Dec. 4, 2013, the entire contents of each of which are hereby incorporated by reference.The embodiment of the present invention relates to an optical waveguide and an opto-electric hybrid board which are widely used for optical communications, optical information processing and other general optics.Optical waveguides are incorporated in optical waveguide devices, optical integrated circuits and optical wiring boards, and widely used for optical communications, optical information processing and other general optics. With recent trend toward higher capacity and higher speed information transmission, opto-electric hybrid boards are notably developed. An exemplary opto-electric hybrid board includes a ...

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Номер записи: 85
15-08-2019 дата публикации

Flexible Optical-Fiber Ribbon

Номер: US20190250347A1
Автор: Anderson Clint Nicholaus, Barker Jeffrey Scott, Fallahmohammadi Ehsan, Risch Brian G., Sach John R., Terry Andrea
Принадлежит:

An optical-fiber ribbon having excellent flexibility, strength, and robustness includes optical fibers having a sacrificial, outer release layer that facilitates separation of an optical fiber from the optical-fiber ribbon without damaging the optical fiber's glass core, glass cladding, primary coating, secondary coating, and ink layer, if present. 1. A method of making an optical-fiber ribbon , comprising(i) arranging a plurality of optical fibers into a longitudinal optical-fiber assembly, wherein the plurality of optical fibers are parallel and respectively adjacent to each other, and wherein each optical fiber includes, from its center to its periphery, a glass core, a glass cladding, a primary coating, a secondary coating, and an outer layer formed of a first curable resin that is less than completely cured;(ii) applying a second curable resin to a surface of the optical-fiber assembly, wherein the second curable resin forms a plurality of successive elongated rectilinear beads configured to form bonds between adjacent optical fibers in the optical-fiber assembly; and(iii) passing the optical-fiber assembly with the surficial, elongated rectilinear beads through a curing station to cure the second curable resin and to further cure the first curable resin.2. The method according to claim 1 , comprising claim 1 , before the step of arranging the plurality of optical fibers into a longitudinal optical-fiber assembly claim 1 , curing the first curable resin to between 90 and 95 percent cured as determined using Fourier Transform Infrared (FTIR) of the peak of the chemically active group of the first curable resin.3. The method according to claim 1 , comprising claim 1 , before the step of arranging the plurality of optical fibers into a longitudinal optical-fiber assembly claim 1 , curing the first curable resin to greater than 95 percent cured as determined using Fourier Transform Infrared (FTIR) of the peak of the chemically active group of the first curable ...

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Номер записи: 86
01-10-2015 дата публикации

Primary optical fiber coating composition containing non-radiation curable component

Номер: US20150277031A1
Автор: Dana Craig Bookbinder, David Neal Schissel, Kevin Robert McCarthy, Weijun Niu
Принадлежит: Corning Inc

An optical fiber is disclosed that includes a primary coating formed from a radiation curable composition that includes a curable cross-linker essentially free of urethane and urea functional groups, a curable diluent, and a non-radiation curable component comprising (thio)urethane and/or (thio)urea groups. The primary coating features low Young's modulus, low T g , and high tensile strength. The optical fiber exhibits low microbend losses in wire mesh drum and basketweave tests.

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Номер записи: 87
04-11-2021 дата публикации

HIGH-DENSITY FAUs AND OPTICAL INTERCONNECTION DEVICES INCLUDING OPTIMIZED ARRAYS AND RELATED METHODS

Номер: US20210341669A1
Автор: Sutherland James Scott
Принадлежит:

A method for fabrication a multifiber cable assembly is provided. The method includes selecting a plurality of optical fibers that each have a respective cladding diameter, determining a maximum fiber core position error for the plurality of optical fibers in a plurality of configurations, and determining a desired order of the plurality of optical fibers that minimizes the maximum fiber position total error. 1. A method for fabricating a multifiber assembly , comprising:selecting a plurality of optical fibers that each have a respective cladding diameter; the plurality of optical fibers are arranged side-by-side in an array such that each optical fiber has a position in the array,', 'the plurality of optical fibers are arranged in a different order,', 'each optical fiber has a respective fiber core position relative to an ideal core position for that optical fiber to define a respective fiber core position error,', 'the ideal core positions are based on each optical fiber of the plurality of optical fibers having an ideal cladding diameter, and', 'the maximum fiber core position error is a maximum of the respective fiber core position errors; and, 'determining a maximum fiber core position error for the plurality of optical fibers in a plurality of configurations, wherein for each configurationdetermining a desired order of the plurality of optical fibers that minimizes the maximum fiber core position error.2. The method of claim 1 , wherein for each optical fiber of the plurality of optical fibers claim 1 , a geometric center of the respective cladding diameter is used as the respective fiber core position.3. The method of claim 1 , further comprising:measuring the respective cladding diameter of each optical fiber of the plurality of optical fibers at one or more locations along a length of the optical fiber.4. The method of claim 1 , further comprising:arranging the plurality of optical fibers in the desired order; andapplying a matrix material to the plurality ...

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Номер записи: 88
04-11-2021 дата публикации

HIGH-DENSITY FAUs AND OPTICAL INTERCONNECTION DEVICES AND RELATED METHODS

Номер: US20210341691A1
Автор: James Scott Sutherland
Принадлежит: Corning Research and Development Corp

A optoelectronic assembly is provided including a photonic integrated circuit (PIC) including at least one electronic connection element and plurality of waveguides disposed on a PIC face, a printed circuit board (PCB) including at least one PCB electronic connection element, which is complementary to the at least one electronic connection element of the PIC and the PIC is configured to be flip chip mounted to the PCB, a lidless fiber array unit including a support substrate having a substantially flat first surface and a signal fiber array including a plurality of optical fibers supported on the first surface, and an alignment substrate disposed on the PIC face and configured to align the plurality of optical fibers of the signal fiber array with the plurality of waveguides.

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Номер записи: 89
13-08-2020 дата публикации

Temperature-immune self-referencing Fabry-Pérot cavity sensors

Номер: US20200257049A1
Автор: Chandrahalim Hengky, SMITH Jonathan
Принадлежит:

A passive microscopic Fabry-Pérot Interferometer (FPI) sensor an optical fiber a three-dimensional microscopic optical structure formed on a cleaved tip of an optical fighter that reflects a light signal back through the optical fiber. The reflected light is altered by refractive index changes in the three-dimensional structure that is subject to at least one of: (i) thermal radiation; and (ii) volatile organic compounds. 1. A method for fabricating a passive optical sensor on a tip of an optical fiber , the method comprising:perpendicularly cleaving a tip of an optical fiber;mounting the tip of the optical fiber in a specimen holder of a photosensitive polymer three-dimensional micromachining machine; andforming a three-dimensional microscopic optical structure on the tip that reflects a light signal back through the optical fiber, the reflected light altered by refractive index changes in the three-dimensional structure that is subject to at least one of: (i) thermal radiation; and (ii) volatile organic compounds.2. The method of claim 1 , wherein forming the three-dimensional microscopic optical structure comprises:depositing photosensitive polymer on the tip of the optical fiber;during a portion of the photosensitive polymer using the three-dimensional micromachining device that performs two-photon polymerization process to form the three-dimensional microscopic optical structure; anddissolving the uncured portion of the photosensitive polymer using a solvent.3. The method of claim 1 , wherein forming the three-dimensional microscopic optical structure comprises forming a layer of polymer that acts as a single cavity Fabry-Pérot Interferometer (FPI).4. The method of claim 1 , wherein forming the three-dimensional microscopic optical structure comprises forming a suspended layer of polymer providing three flat interfaces that act as a two cavity Fabry-Pérot Interferometer (FPI).5. The method of claim 1 , wherein forming the three-dimensional microscopic optical ...

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Номер записи: 90
29-08-2019 дата публикации

MEDICAL TUBE POSITION CONFIRMATION DEVICE

Номер: US20190262237A1
Автор: Davies John, Small David Raymond
Принадлежит:

A feeding tube position confirmation device , operable to confirm the position of a predetermined portion of a medical feeding tube in a predetermined portion of a human or animal body, the position confirmation device comprising an optical waveguide dimensioned to be insertable into the lumen of the feeding tube, the optical waveguide having a sensing distal end comprising a distal end material and a sensing material mixed with the distal end material, the sensing material operable to provide a change in optical properties at the distal end of the optical waveguide dependent on the environment to which the sensing distal end of the waveguide is exposed. The sensing material may comprise a reflective material. Methods of manufacture and use of such devices are also described. 120-. (canceled)21. A method of manufacturing a feeding tube position confirmation device , the feeding tube position confirmation device being operable to confirm the position of a predetermined portion of a medical feeding tube in a predetermined portion of a human or animal body , the position confirmation device comprising an optical waveguide dimensioned to be insertable into the lumen of said feeding tube , the optical waveguide having a sensing distal end comprising a sensing material operable to provide a change in optical properties at the distal end of the optical waveguide dependent on the environment to which the sensing distal end of the waveguide is exposed , wherein the sensing material comprises an optical indicator and a reflective material mixed within a polymer matrix , the method comprising:providing a length of optical waveguide having a proximal end and a distal end;providing a sensing composition in the form of a solution, gel, dispersion or suspension containing the optical indicator, the reflective material, the polymer and a solvent; andtreating the distal end of the optical waveguide with the sensing composition to coat the distal end material of the optical waveguide ...

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Номер записи: 91
29-09-2016 дата публикации

RESIN COMPOSITION FOR FORMING OPTICAL WAVEGUIDE, RESIN FILM FOR FORMING OPTICAL WAVEGUIDE, AND OPTICAL WAVEGUIDE USING THE SAME

Номер: US20160280829A1
Автор: Kuroda Toshihiro, Sakai Daichi, Uchigasaki Masao
Принадлежит: HITACHI CHEMICAL COMPANY, LTD.

The present invention provides a resin composition for an optical waveguide and a resin film for optical waveguides, the composition and the film being soluble in an aqueous alkaline solution, being patternable as required by alkali development, and exhibiting a lower optical propagation loss at a wavelength of from 830 to 850 nm, and an optical waveguide using the composition or the film. The resin composition for an optical waveguide according to the present invention includes (A) a polymer, (B) a polymerizable compound, and (C) a polymerization initiator. A refractive index A of the film after irradiation with UV light and heat-curing and a refractive index B of the film after irradiation with UV light, immersion in an alkali developer, and then heat-curing satisfy the relationship of A>B. As an optical waveguide produced by alkali development using the resin composition according to the present invention has, on at least part of the periphery of a core pattern that forms a core layer, a portion having a refractive index that is lower than the refractive index of the central portion of the core pattern, the optical waveguide is effective in preventing light travelling through the core layer from leaking out into the cladding layer, which can lower optical propagation loss. 1. A resin composition for forming an optical waveguide , the composition comprising:(A) a polymer;(B) a polymerizable compound; and(C) a polymerization initiator;{'sup': '2', 'wherein a refractive index A at a predetermined wavelength (λ) in the range of from 830 to 850 nm of a film produced by forming the composition into a film, irradiating the film with UV light (at a wavelength of 365 nm) at a predetermined dose (X) in the range of from 1000 to 4000 mJ/cm, and then heating the film at a predetermined temperature (T1) in the range of from 160 to 180° C. for a predetermined period (H1) in the range of from 0.5 to 3 hours and a refractive index B at the predetermined wavelength (λ) of a film ...

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Номер записи: 92
08-10-2015 дата публикации

COATED POLYMER CLAD OPTICAL FIBER

Номер: US20150285991A1
Автор: Matsushita Shingo
Принадлежит: FUJIKURA LTD.

A coated polymer clad optical fiber of the invention includes: a polymer cladding layer that is formed around an optical fiber made of silica-based glass and has a refractive index lower than the refractive index of the silica-based glass; and a protective coating layer formed around the polymer cladding layer. The thickness of the polymer cladding layer is 3.0 or more times the thickness of the protective coating layer. 1. A coated polymer clad optical fiber comprising:a polymer cladding layer formed around an optical fiber made of silica-based glass, the polymer cladding layer having a refractive index lower than a refractive index of the silica-based glass; anda protective coating layer formed around the polymer cladding layer; whereina thickness of the polymer cladding layer is 3.0 or more times a thickness of the protective coating layer.2. The coated polymer clad optical fiber according to claim 1 , whereinthe protective coating layer has a type D durometer hardness of greater than or equal to 20.3. The coated polymer clad optical fiber according to claim 1 , whereina resin used to form the protective coating layer is a thermosetting resin.4. The coated polymer clad optical fiber according to claim 1 , whereina resin used to form the polymer cladding layer is a thermosetting resin.5. A coated polymer clad optical fiber comprising:a polymer cladding layer formed around an optical fiber made of silica-based glass, the polymer cladding layer having a refractive index lower than a refractive index of the silica-based glass;at least one or more buffer layers formed around the polymer cladding layer; anda protective coating layer formed around the buffer layers, whereina total thickness of the polymer cladding layer and the buffer layers is 1.5 or more times a thickness of the protective coating layer.6. The coated polymer clad optical fiber according to claim 5 , whereinthe protective coating layer has a type D durometer hardness of greater than or equal to 20.7. ...

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Номер записи: 93
09-12-2021 дата публикации

LIGHT-EMITTING FIBER

Номер: US20210382228A1
Автор: ENDO Ryokei, Suiko Shunsuke, TSUDAKA Takeshi, Washitake Yosuke
Принадлежит: KURARAY CO., LTD.

A light-emitting fiber includes a core and a cladding and is configured to emit light through a side surface of the fiber. A resin used for the core is at least one selected from the group consisting of polymethyl methacrylate, polymethyl methacrylate copolymers, polystyrene, polycarbonates, polyorganosiloxanes, and norbornene, and a resin used for the cladding is fluorine resin. The light-emitting fiber has a fiber diameter of 95 μm or less. 1. A light-emitting fiber , comprising a core and a cladding and configured to emit light through a side surface of the fiber , wherein:a resin used for the core is at least one selected from the group consisting of polymethyl methacrylate, polymethyl methacrylate copolymers, polystyrene, polycarbonates, polyorganosiloxanes, and norbornene;a resin used for the cladding is fluorine resin; andthe light-emitting fiber has a fiber diameter of 95 μm or less.2. The light-emitting fiber according to claim 1 , wherein the number of double folds required to break the light-emitting fiber in a bending fatigue test that is conducted under load per fineness of 0.04 g/dtex and at a bending angle of 135° is 100 or more.3. The light-emitting fiber according to claim 1 , wherein the light-emitting fiber is a multifilament and a maximum number of twists that does not cause breakage of the multifilament is 400 twists/m or more.4. The light-emitting fiber according to claim 1 , wherein the resin used for the core and the resin used for the cladding have a melt viscosity of 300 Pa·s or less at a shear rate at 260° C. of 1216 s claim 1 , and a ratio (a/b) of the melt viscosity a of the core to the melt viscosity b of the cladding is in a range of 0.1 to 8.0 in a region where the shear rate at 260° C. is 10 to 500 s.5. The light-emitting fiber according to claim 1 , wherein a 1% weight loss temperature of the resin used for the core is 260° C. or higher.6. A fiber structure claim 1 , comprising the light-emitting fiber according to in at least a ...

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Номер записи: 94
15-10-2015 дата публикации

Suspended Ridge Oxide Waveguide

Номер: US20150293299A1
Автор: Shen Xiao, Xu Qianfan
Принадлежит:

A waveguide comprising a single-mode optical core configured to carry an optical signal between an inversely tapered waveguide and an optical fiber, wherein the core extends longitudinally along an axis of optical signal propagation between the inversely tapered waveguide and the optical fiber, and an air cladding disposed adjacent to the core along the axis of optical signal propagation. 1. A single-mode waveguide comprising:an optical core configured to couple an optical signal between an inversely tapered waveguide and an optical fiber, wherein the core extends longitudinally along an axis of optical signal propagation between the inversely tapered waveguide and the optical fiber; andan air cladding disposed adjacent to the core along the axis of optical signal propagation.2. The waveguide of claim 1 , wherein the core further comprises:a slab; anda ridge disposed on the slab,wherein the slab and the ridge extend longitudinally along the axis of optical signal propagation, and{'sub': '2', 'wherein the slab and the ridge comprise a silicon dioxide (SiO) material.'}3. The waveguide of claim 2 , wherein the ridge comprises a height of about 2 micrometers (μm) to about 15 μm.4. The waveguide of claim 2 , wherein the ridge comprises a width of about 2 micrometers (μm) to about 15 μm.5. The waveguide of claim 2 , wherein the slab comprises a height of about 0.5 micrometers (μm) to about 10 μm.6. The waveguide of claim 2 , wherein the slab comprises:a base portion; anda step-up portion positioned adjacent to the base portion,wherein the base portion and the step-up portion extend along the axis of optical signal propagation,wherein the base portion comprises a first height, andwherein the step-up portion comprises a second height that is greater than the first height.7. The waveguide of claim 6 , wherein the ridge is disposed at about a middle portion of the base portion claim 6 , wherein the ridge comprises a third height that is about equal to the second height of the ...

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Номер записи: 95
27-08-2020 дата публикации

IMPACT RESISTANT LIGHT GUIDE STRUCTURE

Номер: US20200269531A1
Автор: KONTTURI Ville
Принадлежит: NANOCOMP OY LTD

A light guide structure () has a first main surface () and an opposite second main surface () and is configured to guide light in the light guide structure via total internal reflections at the first and the second main surfaces. The light guide structure comprises an out-coupling arrangement () configured to couple light propagating in the light guide structure out of it through the first and/or the second main surface. The light guide structure comprises two cladding layers () and a core layer () sandwiched between the cladding layers, the core layer comprising a core material and the cladding layers comprising cladding materials, respectively. The core material has its elasticity higher than the elasticities of the cladding materials, and its refractive index for a design wavelength substantially the same as the refractive indices of the cladding materials. 1. A light guide structure comprising a first main surface and an opposite second main surface , configured to guide light in the light guide structure via total internal reflections at the first main surface and the second main surface , the light guide structure comprising an out-coupling arrangement configured to couple light propagating in the light guide structure out of it through at least one of the first main surface or the second main surface ,wherein the light guide structure comprises two cladding layers and a core layer sandwiched between the cladding layers, the core layer comprising a core material and the cladding layers comprising cladding materials, respectively, the core material having its elasticity higher than elasticities of the cladding materials, and a refractive index for a design wavelength is substantially the same as refractive indices of the cladding materials for the design wavelength, the light guide structure comprising a plurality of alternating core layers and cladding layers.2. The light guide structure as defined in claim 1 , wherein at least one of the cladding materials ...

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Номер записи: 96
06-10-2016 дата публикации

SINGLE MODE PROPAGATION IN FIBERS AND RODS WITH LARGE LEAKAGE CHANNELS

Номер: US20160291247A1
Автор: Dong Liang, FERMANN Martin E., Wong William
Принадлежит:

Various embodiments include large cores fibers that can propagate few modes or a single mode while introducing loss to higher order modes. Some of these fibers are holey fibers that comprise cladding features such as air-holes. Additional embodiments described herein include holey rods. The rods and fibers may be used in many optical systems including optical amplification systems, lasers, short pulse generators, Q-switched lasers, etc. and may be used for example for micromachining. 1. An optical fiber for propagating at least one lower order mode having a wavelength λ , while limiting propagation of higher order modes having a wavelength λ by providing said higher order modes with a higher loss than said at least one lower order mode at said wavelength λ , said optical fiber comprising:a first cladding region comprising a plurality of holes having a diameter, d, and a center-to-center spacing, Λ, wherein the ratio d/Λ is larger than 0.4 and less than about 0.9; anda core region surrounded by said first cladding region, said plurality of holes of the first cladding region configured to substantially confine propagation of said at least one lower order mode to said core region,wherein said core region has a width of at least 20 micrometers and the outside diameter of said optical fiber is at least 200 micrometers,wherein said optical fiber comprises stress elements that are incorporated into at least some of the plurality of holes of the first cladding region, and which generate two-dimensional asymmetries and provide birefringence so that a polarization-maintaining effect for the optical fiber is obtained.2. The optical fiber of claim 1 , wherein said core and first cladding regions are in a substantially optically transmissive main body of said optical fiber claim 1 , said main body comprising material substantially optically transmissive at said wavelength λ claim 1 , said main body having a width and thickness at least about 250 μm so as to reduce mode coupling ...

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Номер записи: 97
25-12-2014 дата публикации

OPTICAL FIBER COATING FOR SHORT DATA NETWORK

Номер: US20140376867A1
Автор: Chien Ching-Kee
Принадлежит: CORNING INCORPORATED

A hybrid cladding for optical fibers used in short data networks. The hybrid cladding surrounds a glass waveguide fiber and is surrounded by a primary coating. The hybrid cladding has low adhesion to the primary coating. The low adhesion permits stripping of the primary coating from the hybrid cladding without damaging the hybrid cladding and without leaving residue of the primary coating on the surface of the hybrid cladding. The hybrid cladding may be formed by curing a composition that includes a monomer with a radiation-curable functional group, a slip component, and a photoinitiator. The radiation-curable functional group may be a (meth)acrylate group. The slip component may contain silicon or silicone and may further contain a radiation-curable functional group. Silicone di(meth)acrylate is an illustrative slip component. 1. An optical fiber comprising:a glass waveguide fiber; a monomer, said monomer comprising a radiation-curable functional group;', 'a photoinitiator; and', 'a slip component, said slip component comprising silicon and an ethylenically unsaturated group., 'a hybrid cladding surrounding said glass waveguide fiber, said hybrid cladding comprising the cured product of a composition that includes2. The optical fiber of claim 1 , wherein said radiation-curable functional group includes a (meth)acrylate group.3. The optical fiber of claim 2 , wherein said ethylenically unsaturated group includes a (meth)acrylate group.4. The optical fiber of claim 3 , wherein said slip component includes a silicone di(meth)acrylate compound.5. The optical fiber of claim 4 , wherein said silicone di(meth)acrylate compound is present in said composition in an amount from 1 wt % to 40 wt %.6. The optical fiber of claim 1 , wherein said composition further includes an oligomer claim 1 , said oligomer including a (meth)acrylate group claim 1 , said oligomer being present in said composition in an amount less than 30 wt %.7. The optical fiber of claim 1 , wherein said ...

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Номер записи: 98
12-10-2017 дата публикации

OPTICAL RECEPTACLE AND OPTICAL TRANSCEIVER

Номер: US20170293072A1
Автор: AGATSUMA Hirotsugu, HAKOZAKI Satoshi, KANEYUKI Satoshi, KONDO Sho, SATO Hiroki, TOMINAGA Kohei
Принадлежит:

An optical receptacle includes: a fiber stub including an optical fiber, a ferrule, and an elastic member; and a holder holding the fiber stub, the optical fiber including a cladding and a core for conducting light, the ferrule having a through-hole fixing the optical fiber, the elastic member fixing the optical fiber in the through-hole, the fiber stub having one end surface on the ferrule side, and another on an opposite side, the optical fiber including first and third portions on the opposite end surface sides and a second portion therebetween, a core diameter of the first portion being smaller than the third portion, and a core diameter of the second portion increasing from the first portion side toward the third portion side. 1. An optical receptacle , comprising:a fiber stub including an optical fiber, a ferrule, and an elastic member, the optical fiber including a cladding and a core for conducting light, the ferrule having a through-hole fixing the optical fiber, the elastic member fixing the optical fiber in the through-hole; anda holder holding the fiber stub,the fiber stub having one end surface on a side of the ferrule optically connecting to a plug ferrule, and one other end surface on an opposite side to the one end surface,the optical fiber including a first portion on an side of the one other end surface, a third portion on a side of the one end surface, and a second portion between the first portion and the third portion,a core diameter of the first portion being smaller than a diameter of the third portion,a core diameter of the second portion increasing from a side of the first portion toward a side of the third portion, andthe elastic member being provided between the optical fiber and an inner wall of the through-hole.2. The receptacle according to claim 1 , whereina refractive index of the core of the first portion, a refractive index of the core of the second portion, and a refractive index of the core of the third portion are equal one ...

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Номер записи: 99
10-09-2020 дата публикации

HYBRID INTEGRATION FOR PHOTONIC INTEGRATED CIRCUITS

Номер: US20200284978A1
Автор: BRAMHAVAR Suraj Deepak, Juodawlkis Paul William, KHARAS Boris, PLANT Jason, SORACE-AGASKAR Cheryl Marie, Swint Reuel B.
Принадлежит:

Photonic integrated circuits (PICs) enable manipulation of light on a chip for telecommunications and information processing. They can be made with silicon and silicon-compatible materials using complementary metal-oxide-semiconductor (CMOS) fabrication techniques developed for making electronics. Unfortunately, most light sources are made with III-V and II-VI materials, which are not compatible with silicon CMOS fabrication techniques. As a result, the light source for a PIC is either off-chip or integrated onto the PIC after CMOS fabrication is over. Hybrid integration can be improved by forming a recess in the PIC to receive a III-V or II-VI photonic chip. Mechanical stops formed in or next to the recess during fabrication align the photonic chip vertically to the PIC. Fiducials on the PIC and the photonic chip enable sub-micron lateral alignment. As a result, the photonic chip can be flip-chip bonded to the PIC with sub-micron vertical and lateral alignment precision. 1. A method of integrating a photonic chip with a photonic integrated circuit (PIC) , the method comprising:forming a bottom cladding having a thickness of at least 3 μm on a substrate of the PIC;forming a waveguide core on the bottom cladding;exposing a surface of the substrate next to the waveguide core;forming dielectric layer on the surface of substrate next to the waveguide core and on the waveguide core, the dielectric layer on the waveguide core forming a top cladding;patterning at least a portion of the dielectric layer on the surface of substrate next to the waveguide core to form a dielectric pedestal next to a recess; andplacing the photonic chip on the dielectric pedestal to align the photonic chip with the waveguide core.2. The method of claim 1 , wherein the photonic chip comprises at least one of a III-V or II-VI material.3. The method of claim 1 , wherein the photonic chip is a Slab Coupled Optical Waveguide Amplifier (SCOWA) with a transverse mode diameter of at least than 3 μm.4. ...

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Номер записи: 100