Optical Transmission Cable Patents (Class 385/100)
  • Patent number: 11409064
    Abstract: An optical communication cable is provided having a cable body with an inner surface defining a passage within the cable body and a plurality of core elements within the passage. A film surrounds the plurality of core elements, wherein the film directs a radial force inward onto the plurality of core elements to restrain and hold the plurality of core elements in place.
    Type: Grant
    Filed: January 11, 2021
    Date of Patent: August 9, 2022
    Assignee: CORNING OPTICAL COMMUNICATIONS LLC
    Inventors: Michael Emmerich, Warren Welborn McAlpine, Guenter Wuensch
  • Patent number: 11391903
    Abstract: It is disclosed a method for coupling an optical fiber to a fiber optic cable, the fiber optic cable comprising a sheath surrounding an optical core comprising a buffer tube, the optical fiber being loosely contained in the buffer tube. The method comprises: cutting the sheath for a predetermined length thereof and exposing a corresponding portion of the optical core extending outward beyond a butt of the cut sheath; cutting the buffer tube of the exposed optical core and exposing a portion of the optical fiber; using a blocking tube to at least partially surround a section of the exposed portion of the optical fiber; and injecting a sealant into the blocking tube to lock the optical fiber within the blocking tube and couple the optical fiber to the fiber optic cable.
    Type: Grant
    Filed: March 5, 2021
    Date of Patent: July 19, 2022
    Assignee: PRYSMIAN S.P.A.
    Inventors: Ralph Sutehall, Patrick Briggs
  • Patent number: 11360281
    Abstract: An intermittent tape core wire (140) of an optical fiber cable is assembled into a cable core so that in a k core wire, an l core wire, and an m core wire composed of a multi-core optical fibers continuously adjacent in the width direction of the intermittent tape core wire (140), a difference ? between a core wire twisting direction D2km of the k core wire at a bonding portion (142) connecting the k core wire and the l core wire and a core wire twisting direction D2kl of the k core wire at a bonding portion (142) connecting the k core wire and the m core wire is different from when manufactured.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: June 14, 2022
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Masashi Kikuchi, Yusuke Yamada, Hisashi Izumita, Junichi Kawataka, Kazunori Katayama
  • Patent number: 11340414
    Abstract: An optical fiber cable including a central strength member, a first plurality of tight-buffered ribbon stacks, a binder film, and a cable sheath. The central strength member extends along a longitudinal axis of the optical fiber cable. The tight-buffered ribbon stacks are SZ-stranded around the central strength member. An interstitial space is provided between adjacent tight-buffered ribbon stacks. A binder film continuously and contiguously surrounds the first plurality of tight-buffered ribbon stacks along the longitudinal axis. The binder film includes first portions and at least one second portion. Each of the at least one second portion of the binder film extends into one of the interstitial spaces of the first plurality of tight-buffered ribbon stacks. The cable sheath continuously and contiguously surrounds the binder film along the longitudinal axis, and the cable sheath is coupled to the first portions of the binder film.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: May 24, 2022
    Assignee: CORNING RESEARCH & DEVELOPMENT CORPORATION
    Inventors: Bradley Jerome Blazer, Julian Latelle Greenwood, III, Warren Welborn McAlpine, David Alan Seddon
  • Patent number: 11339613
    Abstract: Composite cables suitable for use in conjunction with wellbore tools. One cable may include a polymer composite that includes dopants dispersed in a polymer matrix and continuous fibers extending along an axial length of the cable through the polymer matrix, wherein the cable is characterized by at least one of the following: (1) at least a portion of the cable having a density greater than about 2 g/cm3, wherein at least some of the dopants have a density of about 6 g/cm3 or greater, (2) at least a portion of the cable having a density less than about 2 g/cm3, wherein at least some of the dopants have a density of about 0.9 g/cm3 or less, (3) at least some of the dopants are ferromagnetic, or (4) at least some of the dopants are hydrogen getters.
    Type: Grant
    Filed: August 5, 2020
    Date of Patent: May 24, 2022
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Sean Gregory Thomas, Michael Fripp
  • Patent number: 11327259
    Abstract: A multichip package may include at least a package substrate, a main die mounted on the package substrate, a transceiver die mounted on the package substrate, and an optical engine die mounted on the package substrate. The main die may communicate with the transceiver die via a first high-bandwidth interconnect bridge embedded in the package substrate. The transceiver die may communicate with the optical engine die via a second high-bandwidth interconnect bridge embedded in the package substrate. The transceiver die has physical-layer circuits that directly drive the optical engine. An optical cable can be connected directly to the optical engine of the multichip package.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: May 10, 2022
    Assignee: Intel Corporation
    Inventors: Peng Li, Joel Martinez, Jon Long
  • Patent number: 11320620
    Abstract: Embodiments of a bundled optical fiber cable are provided. Included therein is a central cable unit spanning a first length from a first end to a second end. The central cable unit has a first plurality of optical fibers disposed within a cable jacket. The bundled optical fiber cable also includes at least one optical fiber drop cable wound around the cable jacket of the central cable unit. Each optical fiber drop cable spans a second length from a first end to a second end. Further, each optical fiber drop cable includes one or more optical fibers disposed within a buffer tube. The first end of each optical fiber drop cable is substantially coterminal with the first end of the central cable unit, and the first length spanned by the central cable unit is longer than the second length spanned by each of the optical fiber drop cables.
    Type: Grant
    Filed: December 15, 2020
    Date of Patent: May 3, 2022
    Assignee: CORNING RESEARCH & DEVELOPMENT CORPORATION
    Inventors: Ryan Everette Frye, Corey Scott Keisler, James Arthur Register, III, Benjamin Gray Whitener, Christopher L. Willis
  • Patent number: 11322904
    Abstract: An optical amplifier is provided in which adjacent ones of a plurality of cores each containing a rare-earth element and included in an amplifying multi-core optical fiber (MCF) serve as coupled cores at an amplifying wavelength, a connecting MCF is connected to the amplifying MCF, a pump light source is connected to the connecting MCF, and the pump light source pumps the rare-earth element in the amplifying MCF through the connecting MCF.
    Type: Grant
    Filed: October 11, 2018
    Date of Patent: May 3, 2022
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Takemi Hasegawa, Hirotaka Sakuma, Tetsuya Hayashi
  • Patent number: 11268984
    Abstract: A system and method for forming a low cost optical sensor array. The sensor includes an optical fiber; a first nanocomposite thin film along at least a portion of the optical fiber for interrogating a first parameter through a correlated signal having a first wavelength; and a second nanocomposite thin film along at least a portion of the optical fiber for interrogating a second parameter through a correlated signal having a second wavelength different from the wavelength of the first parameter.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: March 8, 2022
    Assignee: United States Department of Energy
    Inventors: Chenhu Sun, Ping Lu, Ruishu Wright, Paul R Ohodnicki
  • Patent number: 11262515
    Abstract: An optical fiber cable includes a core that includes an assembled plurality of optical fibers; an inner sheath that accommodates the core therein, a pair of tension members that are embedded in the inner sheath and that are disposed on opposite sides of the core, and an outer sheath that covers the inner sheath. The inner sheath is formed with a dividing portion that divides an inner peripheral surface and an outer peripheral surface of the inner sheath in a circumferential direction. The dividing portion extends along a longitudinal direction in which the optical fiber cable extends.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: March 1, 2022
    Assignee: FUJIKURA LTD.
    Inventors: Masatoshi Ohno, Shinnosuke Sato, Mizuki Isaji, Kouji Tomikawa, Akira Namazue, Ken Osato
  • Patent number: 11248969
    Abstract: A method is provided for determining temperature changes of an optical fibre having Fiber Bragg Grating (FBG) patterns provided in at least one portion (Portion 1) of the optical fibre. The optical fibre is connected between a first detector arrangement and a second detector arrangement. Light is emitted into the optical fibre in a first direction from the first detector arrangement, which receives reflections from the FBG patterns of the emitted light. The reflections are processed for determining a current temperature change related to the optical fibre. On the basis of predetermined criteria, light is emitted into the optical fibre in an opposite second, direction from the second detector arrangement. The second detector arrangement receives reflections from the FBG patterns of the light emitted in the second direction and the reflections are processed for determining a current temperature change related to the optical fibre.
    Type: Grant
    Filed: February 7, 2019
    Date of Patent: February 15, 2022
    Assignee: SAAB AB
    Inventors: Roy Josefsson, Daniel Eckerstroem
  • Patent number: 11243365
    Abstract: 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.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: February 8, 2022
    Assignee: The Boeing Company
    Inventors: Dennis G. Koshinz, Eric Y. Chan, Tuong K. Truong, Henry B. Pang, Kim Quan Anh Nguyen
  • Patent number: 11221450
    Abstract: The present disclosure relates to systems and method for deploying a fiber optic network. Distribution devices are used to index fibers within the system to ensure that live fibers are provided at output locations throughout the system. In an example, fibers can be indexed in multiple directions within the system. In an example, fibers can be stored and deployed form storage spools.
    Type: Grant
    Filed: August 21, 2020
    Date of Patent: January 11, 2022
    Assignee: CommScope Technologies LLC
    Inventors: Paul Kmit, Thomas Parsons, Erik J. Gronvall, Douglas C. Ellens, Panayiotis Toundas, Timothy G. Badar, Trevor D. Smith, Thomas G. LeBlanc, Todd Loeffelholz
  • Patent number: 11215777
    Abstract: An optical fiber cable includes a central tube having a first inner and a first outer surface. The first inner surface defines a bore along a longitudinal axis of the cable. Optical fibers are disposed within the bore of the central tube. A cable jacket is disposed around the central tube. The cable jacket has a second inner and a second outer surface defining a first thickness. A skin layer is disposed around the cable jacket. The skin layer has a third inner and a third outer surface defining a second thickness that is 100 ?m or less. The cable jacket material is different from the skin layer material, and the third outer surface defines the outermost surface of the optical fiber cable. Access sections made of the second material extend from the skin layer into the first thickness of the cable jacket.
    Type: Grant
    Filed: July 21, 2020
    Date of Patent: January 4, 2022
    Assignee: CORNING RESEARCH & DEVELOPMENT CORPORATION
    Inventors: George Cornelius Abernathy, James Arthur Register, III
  • Patent number: 11209594
    Abstract: A fiber optic cable includes a plurality of fusion spliced optical fibers, with a polymeric overcoating extending over a fusion splice region as well as over a stripped section of each optical fiber proximate to the fusion splice region, wherein the plurality of fusion spliced optical fibers has a non-coplanar arrangement at the fusion splice region. A method for fabricating a fiber optic cable includes fusion splicing first and second pluralities of optical fibers arranged in a respective one-dimensional array to form a plurality of fusion spliced optical fibers, and contacting the fusion splices as well as stripped sections of the fusion spliced optical fibers with polymeric material in a flowable state. Either before or after the contacting step, the method further includes altering a position of at least some of the spliced optical fibers to yield a configuration in which the plurality of fusion spliced optical fibers have a non-coplanar arrangement at the fusion splice region.
    Type: Grant
    Filed: February 3, 2021
    Date of Patent: December 28, 2021
    Assignee: Corning Incorporated
    Inventor: Qi Wu
  • Patent number: 11204473
    Abstract: An optical fiber drop cable. The optical fiber drop cable includes at least one optical fiber and at least one inner tensile element wound around the at least one optical fiber having a laylength of at least 200 mm. The optical fiber drop cable also includes an interior jacket disposed around the at least one inner tensile element and an exterior jacket having an inner surface and an outer surface. The optical fiber drop cable further includes at least one outer tensile element disposed between the interior jacket and the outer surface of the exterior jacket. Each of the at least one outer tensile element has a laylength of at least 1 m. The exterior jacket includes at least one polyolefin, at least one thermoplastic elastomer, and at least one high aspect ratio inorganic filler. The exterior jacket has an averaged coefficient of thermal expansion of no more than 120(10?6) m/mK.
    Type: Grant
    Filed: June 3, 2020
    Date of Patent: December 21, 2021
    Assignee: CORNING RESEARCH & DEVELOPMENT CORPORATION
    Inventors: Xiaole Cheng, Jason Clay Lail
  • Patent number: 11199675
    Abstract: The present disclosure relates to indexing cables for use in building fiber optic networks using an indexing architecture. In certain examples, fan-out structures are used. Certain types of indexing cables have one or more branch cable sections at each end. Certain types of indexing cables have multiple interface cable sections at one or both ends.
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: December 14, 2021
    Assignee: CommScope Connectivity Belgium BVBA
    Inventor: Olivier Hubert Daniel Yves Rousseaux
  • Patent number: 11181709
    Abstract: Provided is a manufacturing method of an optical fiber ribbon for manufacturing an intermittent-connection-type optical fiber ribbon including a connection part and a non-connection part. The manufacturing method includes: a release agent applying process of intermittently applying a release agent for preventing optical fibers from being bonded to each other with a connection resin in a longitudinal direction of the optical fibers in a state where the optical fibers are arranged in parallel; and a connection resin applying process of allowing the optical fibers in the state of being arranged in parallel to pass through a die for applying the connection resin around the optical fibers after the release agent applying process, and of curing the connection resin.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: November 23, 2021
    Assignee: SSUMITOMOM ELECTRIC INDUSTRIES, LTD.
    Inventors: Fumiaki Sato, Shigeru Suemori, Hiroki Ishikawa, Masahiko Ishikawa, Fumikazu Yoshizawa
  • Patent number: 11156793
    Abstract: A cable arrangement includes first and second optical fiber ribbons both having first ends terminated at a first multi-fiber optical connector. The first ribbon includes a drop fiber routed to a drop interface and indexed fibers having ends indexed at a first row of a second multi-fiber connector. The second ribbon includes fibers having ends terminated at the second multi-fiber connector (e.g., at a second row of the second multi-fiber connector).
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: October 26, 2021
    Assignee: CommScope Technologies LLC
    Inventors: Todd Loeffelholz, Timothy G. Badar
  • Patent number: 11145440
    Abstract: Methods of testing and installing fire-resistant coaxial cables are described. The dielectric between the coax cable's central conductor and outer coaxial conductor ceramify under high heat, such as those specified by common fire test standards (e.g., 1850° F./1010° C. for two hours). The dielectric can be composed of ceramifiable silicone rubber, such as that having a polysiloxane matrix with inorganic flux and refractory particles. Because thick layers of uncured ceramifiable silicone rubber deform under their own weight when curing, multiple thinner layers are coated and serially cured in order to build up the required thickness. A sacrificial sheath mold is used to hold each layer of uncured ceramifiable silicone rubber in place around the central conductor while curing. The outer conductor can be a metal foil, metal braid, and/or corrugated metal.
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: October 12, 2021
    Assignee: American Fire Wire, Inc.
    Inventor: William E. Rogers
  • Patent number: 11137564
    Abstract: The present disclosure relates to a hardened fiber optic fan-out arrangement including a fan-out housing. A plurality of fiber optic pigtails projects outwardly from the fan-out housing. The fiber optic pigtails have free ends including hardened de-mateable fiber optic connection interfaces. A fiber optic feeder cable also projects outwardly from the fan-out housing. The fiber optic feeder cable is optically coupled to the fiber optic pigtails.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: October 5, 2021
    Assignee: COMMSCOPE TECHNOLOGIES LLC
    Inventors: Patrick Jacques Ann Diepstraten, Daniel Eduardo Herrera, Darren Craig Atkinson, Roman Kamenik, Emmanuel Alberto Altamirano Escobedo
  • Patent number: 11131812
    Abstract: A fibre optic connector is described the fibre optic connector comprising a threaded body; a tether strand spreader; a compression seal, when assembled the compression seal located between the tethered strand spreader and the threaded body; a threaded sealing block, connectable to the threaded body, when assembled forcing the tether strand spreader into the threaded body; a fibre terminator; and an elongated sheath connectable to the threaded body and at least partially covering the fibre terminator.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: September 28, 2021
    Assignee: Boxfish Research Limited
    Inventor: Benjamin Martin King
  • Patent number: 11131820
    Abstract: Various implementations of epoxy transitions for fiber optic modules are disclosed. As disclosed herein, a fiber optic module system may include a fiber optic module holding a plurality of multi-fiber adapters at a front of the fiber optic module, a multi-fiber cable, and an epoxy transition to transition the multi-fiber cable to a plurality of individual optical fibers inside the fiber optic module. The epoxy transition may be filled with an epoxy to secure the individual optical fibers inside the epoxy transition.
    Type: Grant
    Filed: May 13, 2020
    Date of Patent: September 28, 2021
    Assignee: Panduit Corp.
    Inventors: Thomas M. Sedor, Mark T. Sargis
  • Patent number: 11131822
    Abstract: A breakout transition assembly including a plurality of optical fibers extending through a cable, a plurality of furcation tubes and a housing with a cable inlet and a furcation chamber. The cable, optical fibers and furcation tubes are fixed relative to the housing with a volume of hardened epoxy in the furcation chamber. The cable inlet includes a clearance that tapers between a first end and a second end. In another aspect, the breakout transition can also include a breakout holder comprising at least one guide, such that the plurality of furcation tubes are fixedly received in the at least one guide in the breakout holder, and the volume of hardened epoxy retains the breakout holder in an engaged position with the transition body.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: September 28, 2021
    Assignee: CommScope Technologies LLC
    Inventors: Paula Lockhart, Clair Iburg
  • Patent number: 11127512
    Abstract: The invention concerns a power cable suitable for providing power to and from a downhole tool situated within a borehole. The cable comprises at least one inner conductor comprising at least one first electrically conductive material, at least one inner insulating layer surrounding the inner conductor(s), comprising at least one electrically insulating material, an armour sheath surrounding the inner insulating layer(s) comprising at least one second electrically conductive material and at least one outer conducting layer surrounding, and electrically contacting, the armour sheath, comprising at least one third electrically conductive material.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: September 21, 2021
    Assignee: NEXANS
    Inventors: Robin K. Sangar, Arne Martin Aanerud
  • Patent number: 11059747
    Abstract: A light diffusing optical fiber includes a glass core, a cladding, a phosphor layer surrounding the cladding, and a plurality of scattering structures positioned within the glass core, the cladding, or both. The phosphor layer includes two or more phosphors and is configured to convert guided light diffusing through the phosphor layer into emission light such that the color of the emission light has a chromaticity within a u?-v? chromaticity region on a CIE 1976 chromaticity space defined by: a first u?-v? boundary line and a second u?-v? boundary line that extend parallel to a planckian locus at a distance of ±0.02 Duv from the planckian locus, a third u?-v? boundary line that extends along an isothermal line for a correlated color temperature of about 2000 K, and a fourth u?-v? boundary line that extends along an isothermal line for a correlated color temperature of about 10000 K.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: July 13, 2021
    Assignee: Corning Incorporated
    Inventors: Stephan Lvovich Logunov, Manuela Ocampo
  • Patent number: 11047767
    Abstract: An optical fiber characteristic measurement device includes: a detector that detects Brillouin scattered light obtained by causing light to be incident on an optical fiber under test; a spectrum analyzer that obtains a Brillouin gain spectrum from the Brillouin scattered light; and a spectrum analyzing controller that: measures a characteristic of the optical fiber under test by analyzing the Brillouin gain spectrum to obtain a peak frequency of the Brillouin gain spectrum, and changes a frequency range used by the spectrum analyzer to obtain the Brillouin gain spectrum according to the peak frequency.
    Type: Grant
    Filed: October 16, 2019
    Date of Patent: June 29, 2021
    Assignee: YOKOGAWA ELECTRIC CORPORATION
    Inventor: Osamu Furukawa
  • Patent number: 11044014
    Abstract: The present disclosure relates to a fiber optic network configuration having an optical network terminal located at a subscriber location. The fiber optic network configuration also includes a drop terminal located outside the subscriber location and a wireless transceiver located outside the subscriber location. The fiber optic network further includes a cabling arrangement including a first signal line that extends from the drop terminal to the optical network terminal, a second signal line that extends from the optical network terminal to the wireless transceiver, and a power line that extends from the optical network terminal to the wireless transceiver.
    Type: Grant
    Filed: April 9, 2020
    Date of Patent: June 22, 2021
    Assignee: CommScope Technologies LLC
    Inventors: Trevor D. Smith, Yu Lu, Wayne M. Kachmar
  • Patent number: 11029477
    Abstract: Provided is an optical fiber cable that is easier to be laid and enables higher-density packaging than an existing cable. This optical fiber cable is a slotless type optical fiber cable including: an optical unit formed by collecting and twisting a plurality of optical fibers or ribbons each formed by arranging the plurality of optical fibers; a cable core housing the optical unit; and a cable jacket provided around the cable core, and a tension member made of a fiber body within the cable core.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: June 8, 2021
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Fumiaki Sato, Yoshiaki Nagao, Ryoei Oka, Ken Takahashi, Takao Hirama
  • Patent number: 11022769
    Abstract: The present invention relates to a pre-terminated (pre-terminated) optical fibre cable assembly (10,90), which is configured to be installed through a duct (20). The pre-terminated optical fibre construction (10,90) includes at least one optical fibre (46). A protective sleeve (26) is added to the optical fibre (46) before adding a terminal connector (24) to the leading end of at least one optical fibre (46). The protective sleeve (26) extends from behind the terminal connector (24) along part of the length of the optical fibre (46). When the cable is installed through a duct, the protective sleeve protects the portion of the fibre that protrudes from the end of the duct, for example in a communications cabinet (16). A residual length (28) of the protective sleeve remains within the duct. Terminal connectors and protective sleeves can be applied at both ends of the cable assembly, or only one end.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: June 1, 2021
    Assignee: EMTELLE UK LIMITED
    Inventor: Eben Colin Kirkpatrick
  • Patent number: 11016256
    Abstract: A flame-retardant optical cable is disclosed which includes a polymeric central loose tube housing optical fibres, a metallic armour surrounding the polymeric central loose tube, and a multi-layered sheath surrounding and in direct contact with the metallic armour. The multi-layered sheath includes an inner layer, an intermediate layer, and an outer layer, all made of a LSoH flame-retardant material. The LSoH flame-retardant material of the intermediate layer has a limiting oxygen index (LOI) higher than the LOI of the LSoH flame-retardant material of the inner layer and of the outer layer. Such cable has improved flame-retardant properties, particularly in terms of slowing flame propagation, heat release, droplets and emission of smokes, when it is exposed to flames during fire.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: May 25, 2021
    Assignee: PRYSMIAN S.P.A.
    Inventors: Zekeriya Sirin, Baris Soenmez
  • Patent number: 11002934
    Abstract: A fiber optic connection assembly for fiber to the home, comprising: a fan-out member; a multi-fiber optical cable having a first end introduced into the fan-out member and a second end extending out of the fan-out member; a multi-fiber optic connector connected to the second end of the multi-fiber optical cable; a plurality of single-fiber optical cables each having a first end introduced into the fan-out member and spliced with a respective one of fibers of the multi-fiber optical cable and a second end extending out of the fan-out member; and a plurality of single-fiber optic connectors connected to the second ends of the single-fiber optical cables, respectively; a plurality of first fiber optic adapters mated with the plurality of single-fiber optic connectors, respectively; and a plurality of outer shields each constructed to receive the connector and the adapter of a respective single-fiber optical cable therein, wherein the outer shield is hermetically fitted on the connector and the adapter of the re
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: May 11, 2021
    Assignee: CommScope Telecommunications (Shanghai) Co. Ltd.
    Inventors: Zhengbin Wang, Wenyong Fan, Jianfeng Jin, Xin Tian, Liming Wang
  • Patent number: 10996413
    Abstract: A fire-resistant optical fibre cable includes a core having a central strength member and buffer tubes arranged around the central strength member. Each buffer tube contains optical fibres. A mica layer is arranged around the core. A glass yarn layer surrounds and is in direct contact with the mica layer. Metal armour surrounds the glass yarn layer. A multi-layered sheath surrounds and is in direct contact with the armour. The sheath includes a first layer, a second layer surrounding and in contact with the first layer, and a third layer in a radial inner position with respect to the first layer and in direct contact thereto. The first, second and third layers are made of LS0H flame-retardant material. The LS0H material of the first layer has an LOI higher than the LOI of the LS0H material of the second and third layers. The second layer is the cable outermost layer.
    Type: Grant
    Filed: March 19, 2020
    Date of Patent: May 4, 2021
    Assignee: Prysmian S.p.A.
    Inventors: Zekeriya Sirin, Baris Sönmez, Can Altingoz
  • Patent number: 10998977
    Abstract: A system includes (i) an optical link including multiple spans of optical fiber and multiple network elements and (ii) at least one switch configured to reverse a direction that at least one of the network elements communicates over the optical link.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: May 4, 2021
    Assignee: Neptune Subsea IP Limited
    Inventor: Herve A. Fevrier
  • Patent number: 10983295
    Abstract: An optical cable comprising an optical core and an external sheath surrounding the optical core, wherein the external sheath comprises an inner layer circumferentially enclosing the optical core and an outer layer circumferentially enclosing the inner layer and comprising at least one longitudinal cavity accessible from outside the external sheath and extending through at least a portion of the outer layer thickness. The inner and outer layers of the external sheath are made of a first material having a first tensile strength, while the cavities in the outer layer are filled with a second material having a second tensile strength lower than the first tensile strength.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: April 20, 2021
    Assignee: PRYSMIAN S.p.A.
    Inventors: Ralph Sutehall, Martin Vincent Davies, Ian Dewi Lang
  • Patent number: 10921541
    Abstract: The present disclosure provides an optical waveguide cable. The optical waveguide cable includes one or more optical waveguide bands positioned substantially along a longitudinal axis of the optical waveguide cable. The optical waveguide cable includes one or more layers substantially concentric to the longitudinal axis of the optical waveguide cable. The one or more layers include a cylindrical enclosure. The one or more optical waveguide bands include a plurality of light transmission elements. The density of the cylindrical enclosure is at most 0.935 gram per cubic centimeter. The optical waveguide cable has a waveguide factor of about 44%. The one or more optical waveguide bands are coupled longitudinally with the cylindrical enclosure.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: February 16, 2021
    Assignee: STERLITE TECHNOLOGIES LIMITED
    Inventors: Venkatesh Murthy, Kishore Sahoo, Sravan Kumar Peraka, Atul Mishra, Pavan Kumar Moturu, Kavya Chintada
  • Patent number: 10921539
    Abstract: An optical fiber includes an integrated detector in the form of phosphors that emit light of a characteristic frequency or wavelength in response to leakage, through the fiber cladding, of light having an interrogation wavelength ?1. Stimulation of phosphor emission by the interrogation light is indicative of aging or wear on the layers surrounding the cladding, and therefore can be used to assess the risk of imminent breakage of the fiber.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: February 16, 2021
    Inventor: Joe Denton Brown
  • Patent number: 10910809
    Abstract: The invention relates to an attenuation element and to a cable including an attenuation element. The attenuation element includes a resiliently deformable body having a first end and a second end opposite the first end. The body has a length that is defined by the distance between the first end and the second end in a direction parallel to a longitudinal axis of the body. The body has at least one cavity, which extends from the first end to the second end. The at least one cavity is provided in the body in such a way that the length of the at least one cavity is greater than the geometric length.
    Type: Grant
    Filed: October 2, 2018
    Date of Patent: February 2, 2021
    Assignee: LEONI KABEL GMBH
    Inventors: Peter Lehmann, Philipp Knauer
  • Patent number: 10883860
    Abstract: An optical fiber sensor includes: a central core disposed at a center of an optical fiber; and an outer peripheral core that spirally surrounds the central core. The effective refractive index ne2 of the outer peripheral core is lower than the effective refractive index ne1 of the central core. A ratio between the effective refractive index ne2 and the effective refractive index ne1 matches a ratio between an optical path length of the central core and an optical path length of the outer peripheral core.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: January 5, 2021
    Assignee: Fujikura Ltd.
    Inventors: Kenichi Ohmori, Koji Omichi, Shingo Matsushita, Kentaro Ichii
  • Patent number: 10871621
    Abstract: A fiber-optic cable having optical fibers that are arranged as a rollable ribbon. Water-swellable material (e.g., superabsorbent liquid, superabsorbent powder, superabsorbent adhesive, etc.) is applied directly to the rollable ribbon, thereby eliminating the need to incorporate conventional water-absorbing yarns, tapes, or other such similar materials. The rollable ribbon is surrounded by a tube, with a dielectric strength member positioned external to the tube and substantially parallel to the tube. A jacket, with a ripcord along a substantial length of the jacket, surrounds the tube. Also taught is a process for manufacturing a rollable-ribbon fiber-optic cable, in which a water-swellable material is applied directly to the rollable ribbon, thereby eliminating the need to incorporate conventional water-absorbing yarns, tapes, or other such similar materials.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: December 22, 2020
    Assignee: OFS FITEL, LLC
    Inventors: Harold P Debban, Peter A Weimann, Heng Ly
  • Patent number: 10845556
    Abstract: An optical fiber cable includes optical fiber ribbons, a slot rod and a cable jacket. The slot rod has slot grooves in which the optical fiber ribbons are housed. The cable jacket covers an outside of the slot rod. The optical fiber ribbons have, in a state in which optical fibers having an outer diameter of 0.22 mm or less are arranged in parallel, connecting portions at which adjacent ones of the optical fibers are connected to one another and non-connecting portions at which adjacent ones of the optical fibers are not connected to one another, which are provided intermittently in a longitudinal direction. A density of core number of the optical fibers included in the optical fiber cable is 4.8 cores/mm2 or more in a cross section of the optical fiber cable.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: November 24, 2020
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Fumiaki Sato, Taro Fujita, Nayu Yanagawa, Yoshiaki Nagao, Nobuyuki Suzuki
  • Patent number: 10845548
    Abstract: A connector assembly includes an adapter, a housing device, a ferrule assembly, and a sensor. The housing device is received by the adapter and has a bore, a front end, and a rear end opposite the front end. A ferrule of the ferrule assembly is within the bore of the housing device and has a mating end extending beyond the front end of the housing device. The sensor is mounted on the rear end of the housing, the rear end of the ferrule assembly, or on the adapter confronting and spaced apart from the housing device or the ferrule assembly. The sensor is configured for detecting a force applied by the housing device or the ferrule assembly, respectively. An electrical characteristic of the sensor changes to indicate a predetermined force has been applied by the housing device or the ferrule assembly, respectively.
    Type: Grant
    Filed: June 24, 2019
    Date of Patent: November 24, 2020
    Assignee: Go!Foton Holdings, Inc.
    Inventors: Kenichiro Takeuchi, Haiguang Lu, Chi Kong Paul Ng
  • Patent number: 10812190
    Abstract: Provided is an Active Optical Cable (AOC) device for short-range optical communication. The AOC device includes an electrical wire between a transmitter and a receiver for the feedback of a monitoring signal from the receiver. The receiver further includes a monitoring circuit to control the compensation of a high frequency component of an equalizing filter, acquire the result of receiving signal size determination and a high frequency component compensation from the equalizing filter, and perform the feedback of the acquired monitoring signal to the transmitter through the electrical wire. The transmitter further includes a transmitter control circuit to receive the feedback monitoring signal from the receiver through the electrical wire and control a high frequency component control code of the high frequency component control circuit and an optical signal output size control code of the optical device driving circuit based on the received monitoring signal.
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: October 20, 2020
    Assignee: QUALITAS SEMICONDUCTOR CO., LTD.
    Inventor: Duho Kim
  • Patent number: 10796822
    Abstract: A gas blocking cable includes cabled wires, where each wire includes cabled conductors having interstitial areas there between. An insulation material circumferentially surrounds the cabled conductors and a conductor filling material is positioned within the interstitial areas between conductors. A shield circumferentially surrounds the cabled wires so that a cable is formed with areas between the wires. A wire filling material is positioned within the areas between the wires. Each of the conductor filling material and wire filling material is inert, non-flammable and able to withstand a temperature of at least approximately 200° C.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: October 6, 2020
    Assignee: TE Wire & Cable LLC
    Inventors: Mathew J. Nadakal, Gregory J. Smith
  • Patent number: 10788629
    Abstract: The present disclosure relates to systems and method for deploying a fiber optic network. Distribution devices are used to index fibers within the system to ensure that live fibers are provided at output locations throughout the system. In an example, fibers can be indexed in multiple directions within the system. In an example, fibers can be stored and deployed form storage spools.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: September 29, 2020
    Assignee: CommScope Technologies LLC
    Inventors: Paul Kmit, Thomas Parsons, Erik J. Gronvall, Douglas C. Ellens, Panayiotis Toundas, Timothy G. Badar, Trevor D. Smith, Thomas G. LeBlanc, Todd Loeffelholz
  • Patent number: 10785136
    Abstract: A method and apparatus for providing a tracer function for networked cable systems used for data or power transmission. A self contained and self powered indicator circuit is described that enables tracing the location of both ends of a networked cable.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: September 22, 2020
    Assignee: MERTEK INDUSTRIES, LLC
    Inventors: Christopher Briand Scherer, Jonathan Keith Sholtis
  • Patent number: 10774247
    Abstract: The present invention provides a one-component type thermosetting adhesive composition used as an automotive structural adhesive having high damping performance without reducing adhesive strength and having excellent low-temperature curability and a body structure for vehicle, on which the one-component type thermosetting adhesive composition is applied. The present invention relates to a one-component type thermosetting adhesive composition comprising an epoxy resin and an amine-based latent curing agent, wherein the epoxy resin comprises: (1) a dibasic acid ester-based epoxy resin, (2) a butadiene-acrylonitrile copolymer modified epoxy resin, and (3) an unmodified bisphenol A type epoxy resin, and wherein a thermally cured product formed from the composition has: a loss tangent tan ? at 23° C. of not less than 0.2 as a damping performance, and a Young's modulus of not less than 50 MPa, and a body structure for vehicle, on which the one-component type thermosetting adhesive composition is applied.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: September 15, 2020
    Assignees: SUNSTAR ENGINEERING INC., MAZDA MOTOR CORPORATION
    Inventors: Takatomi Nishida, Shohei Yanagisawa, Katsuya Himuro, Kenichi Yamamoto, Motoyasu Asakawa, Tomoya Yoshida
  • Patent number: 10775557
    Abstract: An optical fiber includes an outer diameter less than 220 ?m, a glass fiber that includes a glass core and a glass cladding, a primary coating, and a secondary coating. The glass cladding surrounds and is in direct contact with the glass core. The primary coating surrounds and is in direct contact with the glass fiber. The primary coating can have a Young's modulus less than 0.5 MPa and a thickness less than 30.0 ?m. The secondary coating surrounds and is in direct contact with the primary coating. The secondary coating can have a thickness less than 27.5 m. A pullout force of the optical fiber can be less than a predetermined threshold when in an as-drawn state. The pullout force may increase by less than a factor of 2.0 upon aging the primary and secondary coatings on the glass fiber for at least 60 days.
    Type: Grant
    Filed: November 4, 2019
    Date of Patent: September 15, 2020
    Assignee: Corning Incorporated
    Inventors: Ching-Kee Chien, Pushkar Tandon, Ruchi Tandon
  • Patent number: 10767421
    Abstract: Composite cables suitable for use in conjunction with wellbore tools. One cable may include a polymer composite that includes dopants dispersed in a polymer matrix and continuous fibers extending along an axial length of the cable through the polymer matrix, wherein the cable is characterized by at least one of the following: (1) at least a portion of the cable having a density greater than about 2 g/cm3, wherein at least some of the dopants have a density of about 6 g/cm3 or greater, (2) at least a portion of the cable having a density less than about 2 g/cm3, wherein at least some of the dopants have a density of about 0.9 g/cm3 or less, (3) at least some of the dopants are ferromagnetic, or (4) at least some of the dopants are hydrogen getters.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: September 8, 2020
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Sean Gregory Thomas, Michael Fripp
  • Patent number: 10739542
    Abstract: In various embodiments, an optical fiber module including an optical fiber having a first end, a second end, and a twisted portion between the first and second ends to enable the optical fiber to provide two orthogonal transverse bending degrees of freedom. The twisted portion induces an optical distortion. The module further includes a distortion compensation arrangement that is configured to at least partially compensate for the optical distortion and a housing that is configured to house at least a portion of the optical fiber including the twisted portion.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: August 11, 2020
    Assignee: Raytheon Company
    Inventors: Ray E. McVey, David A. Rockwell