Where The Second Or Further Layer Is A Coating Patents (Class 385/128)
  • Patent number: 11914205
    Abstract: The present invention satisfies at least one of the condition of the degree of freedom of a primary layer 11 shown in the equation (I) and the condition of the rigidity of a secondary layer 12 shown in the equation (II). Thus, a coated optical fiber 1 capable of suppressing transmission loss in a low temperature environment is provided, in which, even when an optical fiber 10 having a large effective core cross-sectional area Aeff of the optical fiber 10 at a wavelength of 1550 nm and having high microbend sensitivity is used, transmission loss in a low temperature environment can be suppressed. [Math.
    Type: Grant
    Filed: August 23, 2022
    Date of Patent: February 27, 2024
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Minoru Kasahara, Yoshihiro Arashitani, Kouji Mochiduki, Masahiro Yabe
  • Patent number: 11914186
    Abstract: An optical fiber comprises a glass fiber comprising a core and a cladding, a primary resin layer being in contact with the glass fiber and covering the glass fiber, and a secondary resin layer covering the primary resin layer, wherein the Young's modulus of the primary resin layer is 0.04 MPa or more and 1.0 MPa or less at 23° C.±2° C., the secondary resin layer consists of a cured product of a resin composition comprising a base resin containing a urethane (meth)acrylate oligomer, a monomer, and a photopolymerization initiator and hydrophobic inorganic oxide particles, and the content of the inorganic oxide particles is 1% by mass or more and 60% by mass or less based on the total amount of the resin composition.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: February 27, 2024
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Katsushi Hamakubo, Yuya Homma
  • Patent number: 11899257
    Abstract: An optical-electrical conductor assembly is provided that includes an optical waveguide that has an outer organic jacket layer and a functional layer system disposed on the outer jacket layer of the optical waveguide. The functional later has a base layer portion with a single layer or a sequence of layers and an electrically conductive layer disposed on the base layer portion. The electrically conductive layer has a single layer or a sequence of layers.
    Type: Grant
    Filed: January 27, 2021
    Date of Patent: February 13, 2024
    Assignee: SCHOTT AG
    Inventors: Bernd Schultheis, Oliver Keiper, Christian Henn
  • Patent number: 11891330
    Abstract: The system and methods for marking an optical fiber with color-coded marks disclosed herein include forming closely spaced multiple ink streams, with at least two of the ink streams having different colors. The optical fiber moves over a fiber path that resides adjacent the ink streams. The fiber path and the ink streams are made to briefly intersect so that the ink streams form on the outer surface of the optical fiber a group of spaced apart individual marks, wherein the group of individual marks constitute a color-coded mark. Repeating this marking process at different times as the fiber moves over the fiber path forms spaced apart color-coded marks along the length of the fiber. Subsequent drying and overcoating of the marks fixes and protects the color-coded marks.
    Type: Grant
    Filed: December 31, 2020
    Date of Patent: February 6, 2024
    Assignee: Corning Incorporated
    Inventors: Aditya Kaimal, Kelvin Nguyen, Darren Andrew Stainer
  • Patent number: 11886053
    Abstract: A method of processing by controlling one or more beam characteristics of an optical beam may include: launching the optical beam into a first length of fiber having a first refractive-index profile (RIP); coupling the optical beam from the first length of fiber into a second length of fiber having a second RIP and one or more confinement regions; modifying the one or more beam characteristics of the optical beam in the first length of fiber, in the second length of fiber, or in the first and second lengths of fiber; confining the modified one or more beam characteristics of the optical beam within the one or more confinement regions of the second length of fiber; and/or generating an output beam, having the modified one or more beam characteristics of the optical beam, from the second length of fiber. The first RIP may differ from the second RIP.
    Type: Grant
    Filed: June 30, 2022
    Date of Patent: January 30, 2024
    Assignee: NLIGHT, INC.
    Inventors: Ken Gross, Brian Victor, Robert J. Martinsen, Dahv A. V. Kliner, Roger Farrow
  • Patent number: 11880083
    Abstract: Embodiments of the disclosure relate to an optical fiber cable. The optical fiber cable includes a cable jacket having an inner jacket surface and an outer jacket surface. The outer jacket surface is an outermost surface of the optical fiber cable, and the inner jacket surface defines an internal jacket bore. The optical fiber cable also includes at least one subunit disposed within the internal jacket bore. Each of the at least one subunit includes a foamed tube having an inner subunit surface and an outer subunit surface. The inner subunit surface defines a central subunit bore. Each of the at least one subunit also includes a stack of at least two optical fiber ribbons disposed in the central subunit bore of the foamed tube. Each of the at least two optical fiber ribbons comprising at least two optical fibers.
    Type: Grant
    Filed: December 20, 2022
    Date of Patent: January 23, 2024
    Assignee: CORNING RESEARCH & DEVELOPMENT CORPORATION
    Inventors: Anne Germaine Bringuier, Xiaole Cheng, Sergey Vladimirovich Chernykh
  • Patent number: 11835783
    Abstract: The disclosure relates to optical fiber cable manufacturing equipment for long distance wiring, and a traceable optical fiber cable manufactured thereby, and more particularly, to optical fiber cable manufacturing equipment which makes it easy to trace a burying position, considering a maintenance and repair operation of a cable even when the cable is buried deeply, and a traceable optical fiber cable manufactured thereby.
    Type: Grant
    Filed: June 22, 2022
    Date of Patent: December 5, 2023
    Assignee: HYESUNG CABLE & COMMUNICATION INC.
    Inventor: Young Bin Song
  • Patent number: 11835779
    Abstract: The disclosure provides optical fiber cable manufacturing equipment including a collective core portion including a plurality of optical fibers, a metal tape disposed outside the collective core portion, and a sheath portion disposed outside the metal tape, the optical fiber cable manufacturing equipment including: a pre-bonding portion configured to pre-bond the metal tape to the outside of the collective core portion; a first coating portion disposed behind the pre-bonding portion to coat a first adhesive over at least part of both ends of the metal tape; a bonding portion disposed behind the pre-bonding portion to bond the metal tape to the outside of the collective core portion with the both ends of the metal tape overlapping each other; a second coating portion disposed behind the bonding portion to coat a second adhesive over the outside of the metal tape; and a sheath fabrication portion disposed behind the second coating portion to cover the collective core portion to which the metal tape is bonded, w
    Type: Grant
    Filed: June 22, 2022
    Date of Patent: December 5, 2023
    Assignee: HYESUNG CABLE & COMMUNICATION INC.
    Inventor: Young Bin Song
  • Patent number: 11820704
    Abstract: The present disclosure relates to a resin composition for coating an optical fiber, the resin composition including: a base resin that contains an oligomer, a monomer, and a photopolymerization initiator; and inorganic oxide particles, in which the inorganic oxide particles include a plurality of particle groups having different volume average particle sizes, and the volume average particle size is measured by small-angle X-ray scattering.
    Type: Grant
    Filed: June 4, 2020
    Date of Patent: November 21, 2023
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Katsushi Hamakubo, Chiaki Tokuda, Noriaki Iwaguchi, Kazuya Tokuda
  • Patent number: 11795097
    Abstract: A method of producing an optical fiber preform includes a silica glass body forming step of forming a silica glass body to be at least a portion of a core portion. The method includes an alkali-metal-doped silica glass body forming step of forming an alkali-metal-doped silica glass body doped with an alkali metal around the silica glass body such that the alkali-metal-doped silica glass body contacts the silica glass body. The method further includes a diffusing step of diffusing the alkali metal from the alkali-metal-doped silica glass body to the silica glass body by a heat treatment.
    Type: Grant
    Filed: May 7, 2020
    Date of Patent: October 24, 2023
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Keiichi Aiso, Tomohiro Gonda
  • Patent number: 11774644
    Abstract: An electronic device may have a housing with a display. A protective display cover layer for the display may have an image transport layer formed from fibers or Anderson localization material. The image transport layer may include light absorbing material. Light absorbing material may be incorporated as an additive into a component of the image transport layer such as the binder layer of a coherent fiber bundle or the cladding of fibers in the image transport layer. The image transport layer may also be formed from fibers with a light absorbing layer formed in addition to a transparent cladding. The image transport layer may be formed from Anderson localization material that has light absorbing material. Fibers for the image transport layer may be extruded with light absorbing portions. A polymer preform having light absorbing material may be drawn to form fibers for the image transport layer.
    Type: Grant
    Filed: June 15, 2020
    Date of Patent: October 3, 2023
    Assignee: Apple Inc.
    Inventors: Jean-Pierre S. Guillou, Michael J. Brown, Michael B. Wittenberg, Wei Lin, Salman Karbasi, Shubhaditya Majumdar, Ian T. Clark, Nathan K. Gupta, Prabhakar Gulgunje, Chunchia Huang
  • Patent number: 11747551
    Abstract: A plastic optical fiber includes a plastic optical fiber body and a coloring member covering a peripheral surface of the plastic optical fiber body. The coloring member is made from a cured product of a curable composition containing an active-energy-ray-curable multifunctional acrylate and a coloring agent. The reaction percentage yield of the vinyl group of the active-energy-ray-curable multifunctional acrylate in the coloring member is 85% or more.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: September 5, 2023
    Assignee: NITTO DENKO CORPORATION
    Inventors: Yasuaki Okada, Takeshi Saito, Kenjiro Saomoto
  • Patent number: 11747210
    Abstract: The invention relates to the use of an optical waveguide for optically measuring the temperature of a high-temperature melt, the optical waveguide directing electromagnetic waves from the measuring point to an optical detector and being moved to the measuring point with the aid of a fluid through a line through which the fluid flows. The optical waveguide has a core, cladding and a coating, with the coating consisting of a protective layer and an outer protective sheath. The outer protective sheath is firmly connected to the protective layer.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: September 5, 2023
    Assignee: MINKON GmbH
    Inventor: Torsten Lamp
  • Patent number: 11703650
    Abstract: An optical fiber protection system includes an optical fiber, a light source, a protection circuit, a sensor, and a controller. The light source is configured to transmit a signal to the optical fiber. The protection circuit extends along a length direction of the optical fiber. The sensor is electrically connected to the protection circuit. The controller is electrically connected to the sensor and the light source.
    Type: Grant
    Filed: May 31, 2021
    Date of Patent: July 18, 2023
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Meng-Sheng Chang, Chien-Fu Tseng
  • Patent number: 11698483
    Abstract: Embodiments of the current disclosure include small diameter single-mode optical fibers having gratings and methods of forming thereof. In some embodiments, methods of forming a small diameter single-mode optical fibers having gratings include providing an optical fiber having a core and cladding with a combined outer diameter of 100 ?m to 125 ?m and a coating having a thickness of less than or equal to 20 ?m, wherein the coating comprises one of: (i) a high-modulus coating layer surrounding the cladding region; or (ii) a low-modulus coating layer surrounding the cladding region and a high-modulus coating layer surrounding the low-modulus coating layer; and exposing the core, through the coating, to a pattern of ultraviolet radiation to form an optical grating within the core.
    Type: Grant
    Filed: November 30, 2021
    Date of Patent: July 11, 2023
    Assignees: Corning Incorporated, University of Pittsburgh—of the Commonwealth System of Higher Education
    Inventors: Peng Chen, Ming-Jun Li, Jingyu Wu, Jieru Zhao
  • Patent number: 11675122
    Abstract: The present disclosure provides optical fibers with an impact-resistant coating system. The fibers feature low attenuation. The coating system includes a primary coating and a secondary coating. The primary coating and secondary coating have reduced thickness to provide low-diameter fibers without sacrificing protection. The primary coating has high tear strength and is resistant to damage caused by mechanical force. The secondary coating has high puncture resistance. The outer diameter of the optical fiber is less than or equal to 190 ?m.
    Type: Grant
    Filed: May 12, 2021
    Date of Patent: June 13, 2023
    Assignee: Corning Incorporated
    Inventors: Scott Robertson Bickham, Ming-Jun Li, Pushkar Tandon, Ruchi Sarda Tandon
  • Patent number: 11660071
    Abstract: A photoacoustic and ultrasonic endoscope includes an optical fiber, a light diffuser configured to radially diffuse a laser beam transmitted through the optical fiber, and an array transducer having a cylindrical shape and surrounding the light diffuser, the array transducer being configured to transmit the diffused laser beam therethrough and to generate an ultrasonic wave or detect an ultrasonic wave generated by an object to be examined.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: May 30, 2023
    Assignee: UNIST(ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY)
    Inventors: Joon Mo Yang, Chae Un Kim
  • Patent number: 11644697
    Abstract: The present disclosure relates to a method comprising the following steps: a) forming a waveguide from a first material, the waveguide being configured to guide an optical signal; b) forming a layer made of a second material that is electrically conductive and transparent to a wavelength of the optical signal, steps a) and b) being implemented such that the layer made of the second material is in contact with at least one of the faces of the waveguide, or is separated from the at least one of the faces by a distance of less than half, preferably less than a quarter, of the wavelength of the optical signal. The application further relates to a phase modulator, in particular obtained by such a method.
    Type: Grant
    Filed: August 7, 2020
    Date of Patent: May 9, 2023
    Assignee: STMICROELECTRONICS (CROLLES 2) SAS
    Inventors: Sébastien Cremer, Frédéric Boeuf, Stephane Monfray
  • Patent number: 11630266
    Abstract: An optical switching device (20) includes a substrate (39) and first and second optical waveguides (23, 25) having respective first and second tapered ends (62, 64), which are fixed on the substrate in mutual proximity one to another. A pair of electrodes (36, 38) is disposed on the substrate with a gap therebetween. A cantilever beam (32) is disposed on the substrate within the gap and configured to deflect transversely between first and second positions within the gap in response to a potential applied between the electrodes. A third optical waveguide (21) is mounted on the cantilever beam and has a third tapered end (60) disposed between the first and second tapered ends of the first and second waveguides, so that the third tapered end is in proximity with the first tapered end when the cantilever beam is in the first position and is in proximity with the second tapered end when the cantilever beam is in the second position.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: April 18, 2023
    Assignees: YISSUM RESEARCH DEVELOPMENT COMPANY OF THE HEBREW UNIVERSITY LTD., MELLANOX TECHNOLOGIES, LTD.
    Inventors: Eran Aharon, Dan Mark Marom, Dimitrios Kalavrouziotis, Paraskevas Bakopoulos, Elad Mentovich
  • Patent number: 11624871
    Abstract: An object is to obtain an optical fiber having a small diameter and suppressing the increase of a microbending loss of the optical fiber. The optical fiber includes: a core portion made of silica glass; a cladding portion made of silica glass, the cladding portion covering the outer periphery of the core portion and having a refractive index smaller than a maximum refractive index of the core portion; and a coating portion covering the outer periphery of the cladding portion. The outer diameter of the cladding portion is 100 ?m or smaller, the relative refractive-index difference ?1 of the core portion is 0.5% or smaller, and the thickness of the coating portion is 10 ?m or larger.
    Type: Grant
    Filed: April 16, 2021
    Date of Patent: April 11, 2023
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventor: Kazunori Mukasa
  • Patent number: 11603331
    Abstract: An optical fiber comprises a glass fiber comprising a core and a cladding, a primary resin layer being in contact with the glass fiber and covering the glass fiber, and a secondary resin layer covering the primary resin layer, wherein the secondary resin layer consists of a cured product of a resin composition comprising a base resin containing a urethane (meth)acrylate oligomer, a monomer, and a photopolymerization initiator and hydrophobic inorganic oxide particles, the content of the inorganic oxide particles is 1% by mass or more and 60% by mass or less based on the total amount of the resin composition, and the glass transition temperature of the secondary resin layer is 60° C. or more and 120° C. or less.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: March 14, 2023
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventor: Katsushi Hamakubo
  • Patent number: 11591425
    Abstract: Curable compositions having desirable attributes such as rapid curing rates and enhanced physical properties are prepared using admixtures of one or more (meth)acrylate-functionalized compounds and one or more reactive comonomers, such as 1,1-diester-1-alkenes (e.g., methylene malonates), 1,1-diketo-1-alkenes, 1-ester-1-keto-1-alkenes and/or icatonates.
    Type: Grant
    Filed: May 23, 2018
    Date of Patent: February 28, 2023
    Assignee: Arkema France
    Inventors: Margaux Guichard, Brendan T. McGrail, William C. Wolf, Jeffrey A. Klang
  • Patent number: 11579358
    Abstract: An optical fiber comprises a glass fiber comprising a core and a cladding, and a coating resin layer, wherein the coating resin layer has a primary resin layer being in contact with the glass fiber and coating the glass fiber, and a secondary resin layer coating the primary resin layer, and the primary resin layer and the secondary resin layer are resin layers containing inorganic oxide particles.
    Type: Grant
    Filed: June 10, 2020
    Date of Patent: February 14, 2023
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Katsushi Hamakubo, Chiaki Tokuda, Noriaki Iwaguchi, Tatsuya Konishi
  • Patent number: 11573366
    Abstract: An optical fiber having an axial direction and a cross section perpendicular to the axial direction, and a method and preform for producing such an optical fiber. The optical fiber is adapted to guide light at a wavelength ?, and includes a core region, an inner cladding region surrounding said core region, and at least one of a first type of feature including a void and a surrounding first silica material. The core, the inner cladding region and the first type of feature extends along said axial direction over at least a part of the length of the optical fiber. The first silica material has a first chlorine concentration of about 300 ppm or less.
    Type: Grant
    Filed: June 21, 2022
    Date of Patent: February 7, 2023
    Assignee: NKT PHOTONICS A/S
    Inventors: Jens Kristian Lyngsø, Christian Jakobsen, Jesper Skov Gretlund, Harald R. Simonsen
  • Patent number: 11541585
    Abstract: A coextrusion head for manufacturing a bicomponent polymer fiber, comprising a first inlet for receiving a core polymer component, a second inlet for receiving a cladding polymer component, and a dual-channel nozzle comprising an inner channel and an outer channel encompassing the inner channel. The inner and outer channel are in hydraulic connection with the first and second inlet, respectively. The dual-channel nozzle further comprises a joining path establishing a hydraulic connection between the inner channel, the outer channel, and a nozzle outlet of the dual-channel nozzle. The joining path is adapted for bringing the core polymer component and the cladding polymer component into contact with each other such that a contact layer comprising a mixture of the core polymer component and the cladding polymer component is formed between the core polymer component and the cladding polymer component.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: January 3, 2023
    Assignees: Polytex Sportbelage Produktions-GmbH, Sima S.R.L.
    Inventors: Stephan Sick, Dirk Sander, Ivo Lohr, Andrea Zucconi
  • Patent number: 11536922
    Abstract: An intermittently connected optical fiber ribbon includes optical fibers, disposed side by side in a width direction of the optical fibers, and connecting portions that each intermittently connect two adjacent ones of the optical fibers. A center-to-center distance between any of the two adjacent ones of the optical fibers is greater than a diameter of the individual optical fibers. A total volume shrinkage per meter per 1° C. of the connecting portions of a single one of the optical fibers is 0.00070 mm3/m·° C. or lower.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: December 27, 2022
    Assignee: Fujikura Ltd.
    Inventors: Soichiro Kaneko, Koji Tomikawa, Ken Osato
  • Patent number: 11513284
    Abstract: The invention relates to an optical fiber 1 comprising a core 2 and a cladding 3 surrounding the core 2 and having an outer diameter of 125 ?m, the optical fiber 1 comprising a cured primary coating 4 directly surrounding the cladding 3 and a cured secondary coating 5 directly surrounding the cured primary coating 4, said cured primary coating 4 having a thickness t1 between 10 and 18 ?m and an in-situ tensile modulus Emod1 between 0.10 and 0.18 MPa, said cured secondary coating 5 having a thickness t2 between 10 microns and 18 microns and an in-situ tensile modulus Emod2 between 700 and 1200 MPa, wherein said first and second thicknesses and said first and second in-situ tensile moduli satisfy the following equation: 4%<(t1×t2×E mod1×E mod23)/(t1_norm×t2_norm×E mod1_norm×E mod2_norm3)<50%.
    Type: Grant
    Filed: October 28, 2020
    Date of Patent: November 29, 2022
    Assignee: Draka Comteq France
    Inventors: Alain Pastouret, Pierre Sillard, Louis-Anne de Montmorillon
  • Patent number: 11473942
    Abstract: Waveguides, such as light guides, made entirely of elastomeric material or with indents on an outer surface are disclosed. These improved waveguides can be used in sensors, soft robotics, or displays. For example, the waveguides can be used in a strain sensor, a curvature sensor, or a force sensor. In an instance, the waveguide can be used in a hand prosthetic. Sensors that use the disclosed waveguides and methods of manufacturing waveguides also are disclosed.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: October 18, 2022
    Assignee: Cornell University
    Inventors: Robert Shepherd, Huichan Zhao, Rukang Huang, Hedan Bai, Shuo Li
  • Patent number: 11435518
    Abstract: Provided is a coated optical fiber and an optical fiber cable capable of suppressing transmission loss (microbend loss) even in an optical fiber having high microbend sensitivity. In the present invention, the degree of freedom of a primary layer 11 represented by the equation (I) and the rigidity of a secondary layer 12 represented by the equation (II) are set in specific ranges, respectively. Thus, the present invention provides a coated optical fiber 1 capable of suppressing the transmission loss even when an optical fiber 10 having high microbend sensitivity such as a BI fiber having a large effective core cross-sectional area Aeff of an optical fiber is used. The present invention can be widely used as a coated optical fiber 1 constituting a coated optical fiber ribbon or as a coated optical fiber 1 housed in an optical fiber cable. Further, an optical fiber cable including such coated optical fibers 1 enjoys the effect of the above-described coated optical fiber 1. [Math.
    Type: Grant
    Filed: March 12, 2021
    Date of Patent: September 6, 2022
    Assignee: FURUKAWA ELECTRIC CO. LTD.
    Inventors: Minoru Kasahara, Yoshihiro Arashitani, Kouji Mochiduki, Masahiro Yabe
  • Patent number: 11422301
    Abstract: An optical fiber cable 100 includes at least one optical fiber core 140 and a sheath containing the optical fiber core. The optical fiber core 140 includes optical fibers 130. A total length of the optical fiber core 140 is longer than that of the sheath 160. The optical fiber core 140 is contained in the sheath 160 so that bending occurs in the optical fibers 130.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: August 23, 2022
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Yusuke Yamada, Masashi Kikuchi, Hisashi Izumita, Junichi Kawataka, Kazunori Katayama
  • Patent number: 11407846
    Abstract: Provided are a monomer which can provide a cured product having both high toughness and rigidity, a monomer composition containing the monomer, the monomer composition used as a dental material monomer composition, a dental material composition containing the monomer composition or the dental material monomer composition, a cured product thereof having excellent mechanical properties, a dental material formed by curing the dental material composition, a method for producing the monomer composition, and a method for producing the dental material. A (meth)acrylate (D) is a reaction product of an amine compound (A) having two or more amino groups, an iso(thio)cyanate compound (B) having two or more iso(thio)cyanato groups, and a hydroxy (meth)acrylate compound (C) having one or more polymerizable groups.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: August 9, 2022
    Assignee: MITSUI CHEMICALS, INC.
    Inventor: Naoyuki Kakinuma
  • Patent number: 11406248
    Abstract: 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.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: August 9, 2022
    Assignee: SCHOTT AG
    Inventors: Stephanie Mangold, Thomas Weingärtner, Oliver Fratzer
  • Patent number: 11396476
    Abstract: The present invention concerns an optical fibre comprising: an optical waveguide comprising a glass core surrounded by a glass cladding; a coating surrounding said optical waveguide comprising a cured polymer material comprising a polyester obtained by esterification of: a reactant A selected from an acid, a triglyceride, or a mixture of triglycerides having a C16-C24 aliphatic chain comprising at least two conjugated double bonds; and a polyol made of at least one monomer comprising at least 3 hydroxyl groups, the polyol being thermally stable up to 300° C. (reactant B). The present invention concerns also the above said polyester coating, a method for coating an optical fibre with said polyester coating and a method for obtaining predetermined mechanical properties of a coating for an optical fibre. The cured polymer forming the coating can be prepared by curing the polyester of the invention either thermally or by radiation.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: July 26, 2022
    Assignees: PRYSMIAN S.p.A., POLITECNICO DI MILANO
    Inventors: Lidia Terruzzi, Pamela De Martino, Attilio Citterio, Massimo Gola
  • Patent number: 11385431
    Abstract: The coated optical fiber (10) includes: an optical fiber (11) including a core (111) and a cladding (112); a first buffer layer (121) covering the optical fiber (11), and having a refractive index lower than that of the cladding (112) and a Shore D hardness of D/20.0/1 or higher; a second buffer layer (122) covering the first buffer layer (121), and having a higher Shore D hardness than the first buffer layer (121); and a jacket (13) covering the second buffer layer (122).
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: July 12, 2022
    Assignee: Mitshishi Cable Industries, Ltd.
    Inventors: Masatoshi Tanaka, Yoshiki Yamakawa, Hideaki Itou, Daiki Tabei
  • Patent number: 11372155
    Abstract: An optical fiber comprises a glass fiber; a primary resin layer coating an outer periphery of the glass fiber; and a secondary resin layer coating an outer periphery of the primary resin layer, and a pH of the primary resin layer is greater than a pH of the secondary resin layer.
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: June 28, 2022
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Kumiko Tachibana, Noriaki Iwaguchi, Takashi Fujii
  • Patent number: 11359939
    Abstract: Provided is an optical waveguide with an inscribed Bragg grating, where the Bragg grating is stable at high temperature, has low scattering loss and high reflectivity. Also provided is a method for inscribing a Bragg grating in an optical waveguide, the method comprising irradiating the optical waveguide with electromagnetic radiation from an ultrashort pulse duration laser of sufficient intensity to cause a permanent change in an index of refraction within a core of the optical waveguide, where the irradiating step is terminated prior to erasure of a Bragg resonance, and heating the optical waveguide to a temperature and for a duration sufficient to substantially remove a non-permanent grating formed in the optical waveguide by the irradiating step.
    Type: Grant
    Filed: November 19, 2020
    Date of Patent: June 14, 2022
    Assignee: NATIONAL RESEARCH COUNCIL OF CANADA
    Inventors: Dan Grobnic, Stephen Mihailov, Robert Walker, Ping Lu, Huimin Ding, David Coulas, Cyril Hnatovsky
  • Patent number: 11353673
    Abstract: Present disclosure provides a method for grouping of a plurality of optical fibers using first coating layer and magnetic coating layer. The method of the present disclosure includes the step of coating of each of the plurality of optical fibers with a first coating layer and the step of coating of each of the plurality of optical fibers with a magnetic coating layer. Further, the method includes the step of applying magnetic field over the plurality of optical fibers for grouping of the plurality of optical fibers in a predefined manner. Furthermore, the first coating layer serves as a shock absorber to protect the plurality of optical fibers from physical damage.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: June 7, 2022
    Assignee: STERLITE TECHNOLOGIES LIMITED
    Inventor: Hemanth Kondapalli
  • Patent number: 11292928
    Abstract: An active energy ray-curable inkjet ink containing polymerizable compounds and a polymerization initiator, wherein the polymerizable compounds include at least 5 types of polyfunctional polymerizable compounds having molecular weights within a range from 150 to 500, and include substantially no monofunctional polymerizable compounds.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: April 5, 2022
    Assignees: TOYO INK SC HOLDINGS CO., LTD., TOYOCOLOR CO., LTD
    Inventors: Yohei Konda, Hiroyuki Yoshida
  • Patent number: 11275206
    Abstract: An optical fiber comprising a core, a cladding disposed about the core, and a primary coating disposed about the cladding. The primary coating is cured during draw to at least eighty-five percent (85%) of the primary coating's fully cured primary-coating in situ modulus (P-ISM) value.
    Type: Grant
    Filed: July 15, 2020
    Date of Patent: March 15, 2022
    Assignee: OFS FITEL, LLC
    Inventors: Kariofilis Konstadinidis, Debra A Simoff
  • Patent number: 11248091
    Abstract: A curable silicone composition is disclosed. The curable silicone composition comprises: (A) a linear organopolysiloxane having at least two silicon atom-bonded alkenyl groups per molecule, wherein at least 5 mole % of all silicon atom-bonded organic groups are aryl groups; (B) an organopolysiloxane containing siloxane units represented by the general formula R13SiO1/2 where each R1 represents an independently selected monovalent hydrocarbon group, and siloxane units represented by the general formula SiO4/2, wherein the amount of alkenyl groups is at least 6% by weight; (C) an organopolysiloxane having at least two silicon atom-bonded hydrogen atoms per molecule; and (D) a hydrosilylation reaction catalyst. The curable silicone composition forms a cured product with little weight reduction, little change in hardness, and little crack generation after thermal aging.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: February 15, 2022
    Assignee: DOW TORAY CO., LTD.
    Inventors: Akito Hayashi, Tomohiro Iimura
  • Patent number: 11181685
    Abstract: The present disclosure provides optical fibers with an impact-resistant coating system. The fibers feature low microbending and high mechanical reliability. The coating system includes a primary coating and a secondary coating. The primary coating and secondary coating have reduced thickness to provide reduced radius fibers without sacrificing protection. The primary coating has a low spring constant and sufficient thickness to resist transmission of force to the glass fiber. The secondary coating has high puncture resistance. The outer diameter of the optical fiber is less than or equal to 200 ?m.
    Type: Grant
    Filed: January 5, 2021
    Date of Patent: November 23, 2021
    Assignee: Corning Incorporated
    Inventors: Arash Abedijaberi, Scott Robertson Bickham, Darren Andrew Stainer, Pushkar Tandon
  • Patent number: 11150425
    Abstract: A downhole strain sensing cable includes a core optical unit which includes a plurality of optical fibers. A fiber-reinforced polymer matrix layer surrounds and contacts the core optical unit. An extrusion layer surrounds and contacts the fiber-reinforced polymer matrix layer. An outer metal tube surrounds and contacts the extrusion layer.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: October 19, 2021
    Assignee: AFL Telecommunications LLC
    Inventors: Rajesh Kamath, Brett Villiger
  • Patent number: 11045254
    Abstract: A steerable laser probe may include a handle having a handle distal end and a handle proximal end, a plurality of actuation controls of the handle, a flexible housing tube having a flexible housing tube distal end and a flexible housing tube proximal end, and an optic fiber disposed within an inner bore of the handle and the flexible housing tube. An actuation of an actuation control of the plurality of actuation controls may gradually curve the flexible housing tube. A gradual curving of the flexible housing tube may gradually curve the optic fiber. An actuation of an actuation control of the plurality of actuation controls may gradually straighten the flexible housing tube. A gradual straightening of the flexible housing tube may gradually straighten the optic fiber.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: June 29, 2021
    Assignee: KATALYST SURGICAL, LLC
    Inventors: Gregg D Scheller, Matthew N Zeid
  • Patent number: 11036000
    Abstract: The present disclosure provides optical fibers with an impact-resistant coating system. The fibers feature low attenuation. The coating system includes a primary coating and a secondary coating. The primary coating and secondary coating have reduced thickness to provide low-diameter fibers without sacrificing protection. The primary coating has high tear strength and is resistant to damage caused by mechanical force. The secondary coating has high puncture resistance. The outer diameter of the optical fiber is less than or equal to 190 ?m.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: June 15, 2021
    Assignee: Corning Incorporated
    Inventors: Scott Robertson Bickham, Ming-Jun Li, Pushkar Tandon, Ruchi Tandon
  • Patent number: 11007011
    Abstract: One described aspect is an optical fiber comprising: a fiber core that extends along a fiber axis, is configured to transmit a laser energy along the fiber axis, and terminates at a distal end; a first cladding that extends along the fiber axis, is adjacent to the fiber core, and terminates at a distal end; a coating that extends along the fiber axis and terminates at a distal end, wherein the coating is a gold coating; a second cladding that surrounds a portion of the gold coating along the fiber axis, and terminates at a distal end; an outer jacket that extends along the fiber axis and terminates at a distal end; and a fiber tip. Associated laser systems are also disclosed.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: May 18, 2021
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Wen-Jui Ray Chia, Steven Yihlih Peng
  • Patent number: 10989871
    Abstract: A polymer waveguide/modulator including a lower cladding layer, a polymer core, an upper cladding layer, a first protection/barrier layer sandwiched between the lower cladding layer and the core, and a second protection/barrier layer sandwiched between the core and the upper cladding layer. The protection/barrier layers designed to protect the cladding layers and the core from solvents and gases and to prevent current leakage between the cladding layers and the core. The first protection/barrier layer is optically transparent and designed with a refractive index less than, greater than, or the same as the refractive index of the core and approximately equal to the refractive index of the lower cladding layer. The second protection/barrier layer is optically transparent and designed with a refractive index less than, greater than, or the same as the refractive index of the core and approximately equal to the refractive index of the upper cladding layer.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: April 27, 2021
    Assignee: Lightwave Logic Inc.
    Inventors: Richard Becker, Michael Lebby, Youngwoo Yi
  • Patent number: 10976540
    Abstract: Described are optical fibers and scanning fiber displays comprising optical fibers. The disclosed optical fibers include a plurality of mass adjustment regions, such as gas-filled regions, positioned between a central waveguiding element and an outer periphery for reducing a mass of the optical fiber as compared to an optical fiber lacking the plurality of mass adjustment regions.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: April 13, 2021
    Assignee: Magic Leap, Inc.
    Inventors: Timothy Mark Dalrymple, Clinton Carlisle, Jason Schaefer, Andrew C. Duenner, Vaibhav Mathur
  • Patent number: 10883870
    Abstract: The fiber optic probe detects changes in ultrasound pressure in an immersion medium such as a liquid, a gas, or a solid, where the system includes an optical fiber probe having a fiber of the probe has a highly doped (or regular) core with a diameter in the range 5 to 10 ?m and a clad diameter equal to or more than 50 ?m; and the optical fiber tip has been modified in a D-shaped (or V-shaped) structure where the clad material has been removed from one side of the cylindrical fiber to the surface of the fiber core; then, this modified region of the fiber is coated, with a very thin layer of a metallic material, ranging from 3 to 10 nm.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: January 5, 2021
    Assignee: Drexel University
    Inventors: Mahmoud A. El-Sherif, Afshin S. Daryoush, Peter A. Lewin, Rupa Gopinath Minasamudram
  • Patent number: 10884182
    Abstract: Described herein are coated optical fibers including an optical fiber portion, wherein the optical fiber portion includes a glass core and cladding section that is configured to possesses certain mode-field diameters and effective areas, and a coating portion including a primary and secondary coating, wherein the primary coating is the cured product of a composition that possesses specified liquid glass transition temperatures, such as below ?82° C., and/or a viscosity ratios, such as between 25° C. and 85° C., of less than 13.9. Also described are radiation curable coating compositions possessing reduced thermal sensitivity, methods of coating such radiation curable coating compositions to form coated optical fibers, and optical fiber cables comprising the coated optical fibers and/or radiation curable coating compositions elsewhere described.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: January 5, 2021
    Assignee: DSM IP ASSETS B.V.
    Inventors: Paulus Antonius Maria Steeman, Xiaosong Wu, Adrianus Cornelis Bastiaan Bogaerds, Mark Petrus Franciscus Pepels
  • Patent number: 10815129
    Abstract: A rigid radiation reflector is fabricated from a powdered material transparent to light in a wavelength band extending from approximately 0.2 micrometers to at least 8 micrometers. The powdered material is dispersed in a liquid wherein the powdered material is at least 95% insoluble in the liquid. The resulting mixture is molded under pressure at room temperature and then sintered to generate a porous solid. The porous solid is cooled to room temperature. A surface of the porous solid is then coated with a light-reflecting metal.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: October 27, 2020
    Assignee: United States of America as Represented by the Administrator of NASA
    Inventors: Robert C. Youngquist, Tracy L. Gibson, Jan M. Surma, Jerry W. Buhrow, Mark A. Nurge