Loose Tube Type Patents (Class 385/109)
  • Patent number: 10571773
    Abstract: A fiber optic cable assembly includes an elongate housing, a signal fiber placed inside the housing and extending longitudinally, and a plurality of sensing fibers placed inside the housing and extending longitudinally. The plurality of sensing fibers is placed around the signal fiber. Each of the plurality of sensing fibers carries a respective laser signal of a distinct frequency. The signal fiber carries one or more evanescent coupling signals responsive to the laser signals in the plurality of sensing fibers.
    Type: Grant
    Filed: June 10, 2019
    Date of Patent: February 25, 2020
    Assignee: Saudi Arabian Oil Company
    Inventors: Damian Pablo San Roman Alerigi, Frode Hveding
  • Patent number: 10558105
    Abstract: A fiber optic cable assembly includes an elongate housing, a signal fiber placed inside the housing and extending longitudinally, and a plurality of sensing fibers placed inside the housing and extending longitudinally. The plurality of sensing fibers is placed around the signal fiber. Each of the plurality of sensing fibers carries a respective laser signal of a distinct frequency. The signal fiber carries one or more evanescent coupling signals responsive to the laser signals in the plurality of sensing fibers.
    Type: Grant
    Filed: June 10, 2019
    Date of Patent: February 11, 2020
    Assignee: Saudi Arabian Oil Company
    Inventors: Damian Pablo San Roman Alerigi, Frode Hveding
  • Patent number: 10534149
    Abstract: A flame retardant and/or crush-resistant optical cable is provided. The cable includes a plurality of optical fibers and an inner jacket surrounding the plurality of optical fibers. The inner jacket includes an inner layer and an outer layer. The cable includes an armor layer surrounding the inner jacket. The cable includes an outer jacket surrounding the armor layer. The inner layer of the inner jacket, the outer layer of the inner jacket and/or the outer jacket are formed from one or more different material providing different properties to the cable. For example, the outer jacket may be formed from a flame-retardant, zero-halogen polymer material, the inner layer of the inner jacket may be chemically resistant to inorganic material, and the outer layer of the inner jacket may be chemically resistant to organic material.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: January 14, 2020
    Assignee: Corning Optical Communications LLC
    Inventors: Holger Baetz, Anne Germaine Bringuier, Ravinder Kumar Kinnera, Wesley Brian Nicholson
  • Patent number: 10527812
    Abstract: Fiber optic cables suitable for use in downhole applications, with one or more features for inhibiting flow of any fluid breaching an armor layer of the optical cable are provided. By preventing, or at least impeding, fluid flow along the cable length, any breaching fluid may be confined to a small region of the cable, which may significantly reduce the deleterious effects (e.g., hydrogen darkening) of an armor layer breach. One example optical cable generally includes one or more optical fibers, an inner tube surrounding the one or more optical fibers, an outer tube surrounding the inner tube, and one or more polymer sealing features disposed in an annulus between the outer tube and the inner tube and bonded to at least one of the inner tube or the outer tube to prevent fluid flow in the annulus along at least a portion of a length of the optical cable.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: January 7, 2020
    Assignee: Weatherford Technology Holdings, LLC
    Inventors: Domino Taverner, John J. Grunbeck, Jason Scott Kiddy
  • Patent number: 10521017
    Abstract: A gesture sensing device includes a multiple segmented photo sensor and a control circuit for processing sensed voltages output from the sensor. The control circuit processes the sensed voltage signals to determine target motion relative to the segmented photo sensor. The control circuit includes an algorithm configured to calculate one of more differential analog signals using the sensed voltage signals output from the segmented photo sensors. A vector is determined according to the calculated differential analog signals, the vector is used to determine a direction and/or velocity of the target motion.
    Type: Grant
    Filed: January 4, 2016
    Date of Patent: December 31, 2019
    Assignee: Maxim Integrated Products, Inc.
    Inventors: David Skurnik, Nevzat A. Kestelli, Ilya K. Veygman, Anand Chamakura, Christopher F. Edwards, Nicole D. Kerness, Pirooz Parvarandeh, Sunny K. Hsu
  • Patent number: 10436995
    Abstract: A cable, which extends in a longitudinal direction, has a cable core and a cable jacket. The cable jacket is extruded around the cable core. The cable is distinguished by the fact that the cable jacket has a plurality of chambers and, overall, is designed, in particular, in the manner of a hollow profile, and by the fact that a functional material different from the material of the cable jacket is introduced within at least one of the chambers. The functional material is preferably a flame proofing agent, but numerous other materials and, in general, functional elements are also conceivable. We further describe a method for producing the cable.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: October 8, 2019
    Assignee: LEONI Kabel GmbH
    Inventors: Christian Ernst, Sebastian Goss
  • Patent number: 10365537
    Abstract: A fiber optic cable assembly includes an elongate housing, a signal fiber placed inside the housing and extending longitudinally, and a plurality of sensing fibers placed inside the housing and extending longitudinally. The plurality of sensing fibers is placed around the signal fiber. Each of the plurality of sensing fibers carries a respective laser signal of a distinct frequency. The signal fiber carries one or more evanescent coupling signals responsive to the laser signals in the plurality of sensing fibers.
    Type: Grant
    Filed: January 8, 2018
    Date of Patent: July 30, 2019
    Assignee: Saudi Arabian Oil Company
    Inventors: Damian Pablo San Roman Alerigi, Frode Hveding
  • Patent number: 10261278
    Abstract: The present disclosure provides an optical fiber cable. The optical fiber cable includes a central strength member. The central strength member lies substantially along a longitudinal axis of the optical fiber cable. In addition, the optical fiber cable includes a first layer. The first layer includes a plurality of water swellable yarns. Further, the optical fiber cable includes a plurality buffer tubes. Each of the plurality of buffer tubes includes a plurality of optical fiber. Moreover, the optical fiber cable includes a second layer of a pair of binder yarns. Further, the optical fiber cable includes a third layer. The third layer is formed of a plurality of water swellable yarns. The optical fiber cable includes a fourth layer. The fourth layer is a sheath layer.
    Type: Grant
    Filed: October 12, 2018
    Date of Patent: April 16, 2019
    Assignee: STERLITE TECHNOLOGIES LIMITED
    Inventors: Venkatesh Murthy, Kishore Sahoo, Atul Mishra, Kavya Chintada
  • Patent number: 10247838
    Abstract: A fiber optic cable assembly includes an elongate housing, a plurality of fiber optic cables placed inside the housing and extending longitudinally, and acoustic isolating material placed inside the housing and extending longitudinally. The acoustic isolating material includes a plurality of outwardly radially extending arms extending from a center of the housing towards a circumference of the housing. The plurality of arms divides a space inside the housing into a plurality of acoustically isolated sections. Each acoustically isolated section extends longitudinally. Each acoustically isolated section includes at least one of the plurality of fiber optic cables. Each acoustically isolated section is acoustically insulated from remaining sections of the plurality of acoustically isolated sections. A surface of the acoustic isolating material of each acoustically isolated section is covered by acoustic reflective material.
    Type: Grant
    Filed: January 8, 2018
    Date of Patent: April 2, 2019
    Assignee: Saudi Arabian Oil Company
    Inventor: Frode Hveding
  • Patent number: 10191237
    Abstract: A fiber optic cable includes core elements wound in a pattern of stranding, the core elements comprising tubes surrounding optical fibers. The fiber optic cable further includes an binder film surrounding the stranded core elements. The binder film is continuous peripherally around the core elements, forming a continuous closed loop when viewed in cross-section, and continuous lengthwise along a length of the cable that is at least a meter. Further, the binder film is in radial tension and opposes outwardly transverse deflection of the core elements.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: January 29, 2019
    Assignee: Corning Optical Communications LLC
    Inventors: Warren Welborn McAlpine, Eric John Mozdy, Joel Laine Parker
  • Patent number: 10133018
    Abstract: A crush resistant, kink resistant optical cable including crush resistant, kink resistant optical fiber buffer tubes and systems and method for making the same are provided. The buffer tubes include a depression pattern formed along the outer surface of the buffer tube. The depression pattern provides areas of decreased thickness in the buffer tube facilitating flexibility and kink resistance. The system and method relates to laser ablation for forming the depression pattern in the buffer tube.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: November 20, 2018
    Assignee: Corning Optical Communications LLC
    Inventors: Joel Patrick Carberry, David Wesley Chiasson, Jeffrey Dean Danley, Anping Liu, Barada Kanta Nayak
  • Patent number: 10078191
    Abstract: An optical cable is provided. The optical cable includes a tubular, elongate body having an inner surface defining a cavity extending between first and second ends of the elongate body and an optical transmission element located with the cavity. The optical cable includes a coupling or bonding structure non-permanently and non-rigidly joining the outer surface of the optical transmission element to the elongate body at a plurality of periodic contact zones such that relative movement between the optical transmission element and the elongate body is resisted.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: September 18, 2018
    Assignee: Corning Optical Communications LLC
    Inventors: Bradley Jerome Blazer, Yangbin Chen, Ching-Kee Chien, Julian Latelle Greenwood, III, Jason Clay Lail, Warren Welborn McAlpine, Christopher Mark Quinn, David Alan Seddon
  • Patent number: 10042137
    Abstract: A device for rearranging optical fibers has a proximal and distal ends. The ends have openings therein to allow optical fibers to pass therethrough. The openings in the distal end have a width that is less than twice the optical fiber's diameter. Dividers separate the distal end openings and have a projection that narrows the distal openings to prevent the optical fibers from accidentally moving out of the openings. A lid is also provided to assist with organization and compression of the optical fibers.
    Type: Grant
    Filed: August 15, 2016
    Date of Patent: August 7, 2018
    Assignee: US Conec, Ltd
    Inventors: Craig M. Conrad, Darrell R. Childers, Brian J. Gimbel, Brian Pruett, Myron W. Yount
  • Patent number: 9989388
    Abstract: Embodiments of the present invention provide a cable for optical fiber sensing applications formed from fiber wound around a cable core. A protective layer is then preferably placed over the top of the wound fiber, to protect the fiber, and to help keep it in place on the cable core. The cable core is preferably of a diameter to allow bend-insensitive fiber to be wound thereon with low bending losses. The effect of winding the fiber onto the cable core means that the longitudinal sensing resolution of the resulting cable is higher than simple straight fiber, when the cable is used with an optical fiber sensing system such as a DAS or DTS system. The achieved resolution for the resulting cable is a function of the fiber winding diameter and pitch, with a larger diameter and reduced winding pitch giving a higher longitudinal sensing resolution.
    Type: Grant
    Filed: October 15, 2014
    Date of Patent: June 5, 2018
    Assignees: Silixa Ltd., Chevron U.S.A. Inc.
    Inventors: Mahmoud Farhadiroushan, Daniel Finfer, Veronique Mahue, Tom Parker, Sergey Shatalin, Dmitry Strusevich
  • Patent number: 9991690
    Abstract: The present invention relates to an accessory for high-voltage direct-current (HVDC) energy cables comprising: at least one element made from a crosslinked elastomeric polymer material, and at least one scavenging layer comprising zeolite particles. The zeolite particles are able to scavenge, very efficiently and irreversibly, the by-products deriving from the cross-linking reaction, so as to avoid space charge accumulation in the element during the accessory lifespan. Moreover, the zeolite particles can prevent the crosslinking by-products present in the element of a non-degassed accessory from migrating towards the insulating layer of the energy cable on which the accessory is mounted.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: June 5, 2018
    Assignee: PRYSMIAN S.p.A.
    Inventors: Paolo Boffi, Marco Marelli
  • Patent number: 9983127
    Abstract: According to embodiments of the present invention, an optical detection device is provided. The optical detection device includes an optics arrangement configured to generate an annular illumination pattern to illuminate a portion of a sample and further configured to receive a return light from the portion of the sample illuminated by the annular illumination pattern; and a detector arrangement configured to detect the return light. According to further embodiments of the present invention, an optical detection method is also provided.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: May 29, 2018
    Assignee: Nanyang Technological University
    Inventors: Quan Liu, Yi Hong Ong
  • Patent number: 9924241
    Abstract: In one embodiment, a patch cord comprises: a communications cable that includes a first conductor and a second conductor that form a first differential pair, a third conductor and a fourth conductor that form a second differential pair; a fifth conductor and a sixth conductor that form a third differential pair, a seventh conductor and an eighth conductor that form a fourth differential pair; and a plug that is attached to a first end of the communications cable, the plug comprising: a plug housing that receives the communications cable; first through eighth plug contacts that each are at least partially within the housing and that are electrically connected to the respective first through eighth conductors; and a color identification tag that has a first color pattern that is a unique identifier for the patch cord.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: March 20, 2018
    Assignee: CommScope, Inc. of North Carolina
    Inventor: Yi-Teh Shih
  • Patent number: 9893813
    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: August 31, 2016
    Date of Patent: February 13, 2018
    Assignee: COMMSCOPE TECHNOLOGIES LLC
    Inventors: Trevor D. Smith, Yu Lu, Wayne M. Kachmar
  • Patent number: 9851500
    Abstract: A light-diffusing optical element with efficient coupling to light sources with high numerical aperture. The light-diffusing optical element includes a higher index core surrounded by a lower index cladding. The cladding includes scattering centers that scatter evanescent light entering the cladding from the core. The scattered light exits the element to provide broad-area illumination along the element. Scattering centers include dopants, nanoparticles and/or internal voids. The core may also include scattering centers. The core is glass and the cladding may be glass or a polymer. The element features high numerical aperture and high scattering efficiency.
    Type: Grant
    Filed: January 14, 2016
    Date of Patent: December 26, 2017
    Assignee: Corning Incorporated
    Inventor: Stephan Lvovich Logunov
  • Patent number: 9733446
    Abstract: Devices, systems and methods to prevent damage to power and communication conductors located in cold occurring regions, with an elongated cylindrical tubular assembly of closed cell foam within an outer non-conductive durable outer coating, with a pull cord extending therethrough, wherein the assembly along with communication and power lines is pulled through new power and communication ducts and conduits and in retrofitting existing power and communication ducts, so that the assembly reduces the volume spacing in the ducts/conduits that can be damaged by water intrusion which expands during freeze conditions.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: August 15, 2017
    Inventors: Steven Haagenson, John Huber, Jr.
  • Patent number: 9720194
    Abstract: A fiber optic cable includes a jacket forming a cavity therein, the jacket having an indentation on the exterior thereof that forms a ridge extending into the cavity along the length of the jacket; and a stack of fiber optic ribbons located in the cavity, each ribbon having a plurality of optical fibers arranged side-by-side with one another and coupled to one another in a common matrix, wherein corners of the ribbon stack pass by the ridge at intermittent locations along the length of the jacket, and wherein interaction between the ridge and the ribbon stack facilitates coupling of the ribbon stack to the jacket.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: August 1, 2017
    Assignee: Corning Optical Communications LLC
    Inventors: Michael John Gimblet, Julian Latelle Greenwood, III, Jason Clay Lail, Eric John Mozdy, David Alan Seddon
  • Patent number: 9677338
    Abstract: A device for laser drilling, having: (a) a laser module (310), having a plurality of laser subsystems (200), each one of the laser subsystems (200) having an active optical fiber (240), wound in a shape of hollow coil and packaged inside a hollow cylindrical box (210), and at least one diode laser (220) mechanically connected perpendicularly to the hollow cylindrical box (210) and optically coupled to the core of the active optical fiber (240) wound and packaged inside the hollow cylindrical box (210), the laser module (310) having a tubular shape allowing cooling and drilling fluids to flow through the concentric hollow cores of the tubular laser module (310) and of the cylindrical box (210); and (b) an optical drill head (100), the optical drill head having an end (130) with orifices (110 and 120), and a body (140).
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: June 13, 2017
    Assignee: FACULDADES CATÓLICAS, ASSOCIACÃO SEM FINS LUCRATIVOS, MANTENEDORA DA PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO-PUC-RIO
    Inventors: Arthur Martins Barbosa Braga, Cicero Martelli
  • Patent number: 9653875
    Abstract: According to one aspect, the invention relates to a device comprising an optical fiber having a high Brillouin threshold, said device including an optical fiber (101) suitable for propagating a high-power optical signal beam, means (11) for coupling a signal beam to an entrance end of the optical fiber (101) and a tubular structure (10) comprising at least one first tube (103) and at least one first adhesive material (102). According to the present description, at least one portion of the optical fiber is immobilized in the tubular structure (10) by means of the first adhesive material (102), which adheres both to the internal surface of the first tube (103) and to the external surface of the optical fiber (101).
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: May 16, 2017
    Assignee: Office National d'Etudes et de Recherches Aérospatiales—ONERA
    Inventors: Guillaume Canat, William Renard, Laurent Lombard, Didier Fleury
  • Patent number: 9581779
    Abstract: A rugged optical micromodule cable is provided. The cable includes a composite cable jacket including a first cable jacket layer formed from a first material and a second cable jacket layer formed from a second material. The first cable jacket layer provides at least 10% of the thickness of the cable jacket and the second cable jacket layer provides at least 10% of the thickness of the cable jacket. The first material is different than the second material, and each material provides different physical properties to the cable jacket.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: February 28, 2017
    Assignee: CORNING OPTICAL COMMUNICATIONS LLC
    Inventors: Harold Edward Hudson, II, William Carl Hurley
  • Patent number: 9547122
    Abstract: The present invention relates to a multi-core optical fiber that can realize suppression of crosstalk on an easy and inexpensive basis. The multi-core optical fiber is provided with a plurality of core portions extending along a central axis of the fiber, a common cladding portion integrally holding the core portions inside, a coating layer surrounding the common cladding portion, and a bend applying portion. The bend applying portion, as an example, is provided on a partial region of an outer periphery of the coating layer and applies bending stress to a glass region.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: January 17, 2017
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventor: Tetsuya Hayashi
  • Patent number: 9341778
    Abstract: An optical fiber cable for installation in a subterranean formation, where the temperature could be in excess of 150 degrees C. The optical fiber cable has an outer metallic jacket defining an elongated conduit with an internal elongated channel that receives an optical fiber. The optical fiber has two strands joined by a splice. A splice protector has a body with a passageway receiving the splice. The body has an outer region configured to be joined by a fusion weld to the outer metallic jacket.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: May 17, 2016
    Assignee: WEATHERFORD CANADA PARTNERSHIP
    Inventors: Corneliu V. Ducra, Remi Charbonneau, Paul Lefebvre, Andre Vincelette
  • Patent number: 9250410
    Abstract: An optical fiber cable includes a jacket and modules including optical fibers. The jacket has an interior that forms an elongate conduit between proximal and distal ends. The modules extend lengthwise through the conduit without being bound together in a pattern of twisting or wound together in a pattern of stranding. Also, the jacket and modules are sized such that free space is provided within the conduit between the modules and the jacket. The jacket is at least ten meters long, and the orientation, alignment, and size of the modules allow individual modules to slide lengthwise relative to one another through the conduit. Pulling one of the modules from the proximal end of the jacket while holding the other modules fixed at the distal end of the jacket draws the one module further into the jacket on the distal end of the jacket.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: February 2, 2016
    Assignee: CORNING CABLE SYSTEMS LLC
    Inventors: Terry L. Cooke, Christopher S. Houser, William C. Hurley, Samuel D. Navé, James M. Wilson
  • Patent number: 9244239
    Abstract: A cable that includes a first optical fiber in a center, a first layer with a plurality of metal wires and a stainless steel tube surrounding the first optical fiber, a second optical fiber inside the stainless steel tube, and a second layer with a plurality of metal wires surrounding the first layer, wherein the first optical fiber is directly exposed to the outside environment.
    Type: Grant
    Filed: October 4, 2013
    Date of Patent: January 26, 2016
    Assignee: AFL Telecommunications LLC
    Inventor: Brian Herbst
  • Patent number: 9212533
    Abstract: A downhole tool with a swellable mantle is configured for insertion of a cable into a longitudinal slit in the mantle. An arcuate groove is formed in an outer surface of the mantle corresponding to a displacement caused by the inserted cable, so that the displacement is counteracted and the outer surface of the mantle remains smooth.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: December 15, 2015
    Assignee: Weatherford/Lamb, Inc.
    Inventor: Jeffrey J. Lembcke
  • Patent number: 9201204
    Abstract: An optical-fiber interconnect cable includes one or more optical fibers and one or more electrical conductors surrounded by an outer jacket. The optical fibers, such as multimode optical fibers, are typically enclosed within a flexible polymeric tube to form a flexible subunit.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: December 1, 2015
    Assignee: Draka Comteq, B.V.
    Inventors: Brian G. Risch, John C. Rosko, Olivier Tatat
  • Patent number: 9195003
    Abstract: An optical unit in which an optical part having an optical element is mounted on a base having an optical waveguide includes a hydrophobic first area formed in a region including an optical axis of the optical part, a hydrophobic second area formed in a region facing the first area on a surface of the base, and a hydrophilic filler which fills peripheries of the first area and the second area between the optical part and the base.
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: November 24, 2015
    Assignee: FUJITSU LIMITED
    Inventors: Takatoyo Yamakami, Takashi Kubota, Masayuki Kitajima
  • Patent number: 9188758
    Abstract: A breakout cable includes a polymer jacket and a plurality of micromodules enclosed within the jacket. Each micromodule has a plurality of bend resistant optical fibers and a polymer sheath comprising PVC surrounding the bend resistant optical fibers. Each of the plurality of bend resistant optical fibers is a multimode optical fiber including a glass cladding region surrounding and directly adjacent to a glass core region. The core region is a graded-index glass core region, where the refractive index of the core region has a profile having a parabolic or substantially curved shape. The cladding includes a first annular portion having a lesser refractive index relative to a second annular portion of the cladding. The first annular portion is interior to the second annular portion. The cladding is surrounded by a low modulus primary coating and a high modulus secondary coating.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: November 17, 2015
    Assignee: CORNING OPTICAL COMMUNICATIONS LLC
    Inventors: Craig Miller Conrad, William Carl Hurley, David Henry Smith
  • Patent number: 9170388
    Abstract: A fiber optic ribbon cable includes a jacket of the cable, the jacket having a cavity defined therein, an optical element including an optical fiber and extending within the cavity of the jacket, and a dry water-blocking element extending along the optical element within the cavity. The dry water-blocking element is wrapped around the optical element with at least a portion of the dry water-blocking element disposed between another portion of the dry water-blocking element and the optical element, thereby defining an overlapping portion of the dry water-blocking element. The optical element interfaces with the overlapping portion to provide direct or indirect coupling between the optical element and the jacket.
    Type: Grant
    Filed: September 24, 2012
    Date of Patent: October 27, 2015
    Assignee: CORNING CABLE SYSTEMS LLC
    Inventors: James Lee Baucom, William Welch McCollough, David Alan Seddon
  • Patent number: 9122032
    Abstract: A light receiving device has a light receiving section for receiving a remote control signal light beam, and a light guide section for guiding the light beam to the light receiving section. The light guide section has a first reflection surface for reflecting the light beam to the light receiving section, the first reflection surface being disposed to oppose obliquely at a sharp angle to an entrance plane, and a second reflection surface for guiding the remote control signal light beam, the second reflection surface being disposed between the entrance plane and the first reflection surface. The first reflection surface includes a circular arc curved surface curved outward in a part closer to the entrance plane and farther from the light receiving section, and a linear inclined surface in a part approaching the light receiving section from the curved surface.
    Type: Grant
    Filed: November 19, 2014
    Date of Patent: September 1, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Naoto Tada, Suguru Nakao, Shuji Yamashita, Hiromi Kanzawa, Kazuya Honda
  • Patent number: 9074988
    Abstract: A system and method for controlling hydrogen concentration in optical sensing systems in subsurface wells. In an exemplary system the downhole optical fiber sensors are positioned within nested conduits and a controlled concentration hydrogen gas is flowed in a first direction through the first conduit, and flowed in a second direction through the annulus, wherein the second direction is opposite to the first direction.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: July 7, 2015
    Assignee: Halliburton Energy Services, Inc
    Inventor: Mikko Jaaskelainen
  • Patent number: 9063268
    Abstract: Dual coated optical fibers and methods for forming dual coated optical fibers are disclosed herein. The dual coated optical fibers include a glass fiber comprising a core region, a cladding region and a dual coating layer surrounding the glass fiber. The dual coating layer includes an inner coating and an outer coating. The inner coating surrounds the glass fiber and includes a first polyimide material. In one embodiment the first polyimide material also includes an adhesion promoter. The outer coating surrounds and is in direct contact with the inner coating and includes a second polyimide material having a decomposition threshold temperature greater than the first polyimide material. The second polyimide material may also have a modulus of elasticity greater than the first polyimide material and a moisture uptake lower than the first polyimide material.
    Type: Grant
    Filed: February 17, 2011
    Date of Patent: June 23, 2015
    Assignee: Corning Incorporated
    Inventors: Kevin Wallace Bennett, Joohyun Koh
  • Patent number: 9063315
    Abstract: An optical cable includes an outer tubing. At least one optical fiber disposed within the outer tubing. A stiffening member configured to bend with bending of the outer tubing; wherein the stiffening member shifts a neutral plane of the cable away from the at least one optical fiber. Also included is a method of increasing a bending sensitivity in an optical cable.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: June 23, 2015
    Assignee: Baker Hughes Incorporated
    Inventors: Daniel B. Cooper, Paul F. Wysocki, Roger G. Duncan
  • Publication number: 20150131953
    Abstract: A cable routing system is described. More specifically, described is a cable routing system that includes a main fiber channel configured to receive a drop fiber to allow it to fit within the main fiber channel, where the channel is surrounded by a discontinuous segmented duct, and the duct comprises a continuous flange structure to provide support for the system as it is installed on or fastened to a wall or other generally flat surface.
    Type: Application
    Filed: January 21, 2015
    Publication date: May 14, 2015
    Inventors: Donald K. Larson, Wesley A. Raider
  • Patent number: 8992098
    Abstract: A connectorized fiber optic cabling assembly includes a loose tube fiber optic cable and a connector assembly. The cable has a termination end and includes: an optical fiber bundle including a plurality of optical fibers; at least one strength member; and a jacket surrounding the optical fiber bundle and the at least one strength member. The connector assembly includes a rigid portion and defines a fiber passage. The connector assembly is mounted on the termination end of the cable such that the optical fiber bundle extends through at least a portion of the fiber passage. The plurality of optical fibers of the optical fiber bundle have a ribbonized configuration in the rigid portion of the connector assembly and a loose, non-ribbonized configuration outside the rigid portion. The plurality of optical fibers undergo a transition from the ribbonized configuration to the loose, non-ribbonized configuration in the rigid portion of the connector assembly.
    Type: Grant
    Filed: June 18, 2010
    Date of Patent: March 31, 2015
    Assignee: CommScope, Inc. of North Carolina
    Inventors: Timothy W. Anderson, Richard L. Case
  • Patent number: 8989542
    Abstract: A fiber optic cable includes one or more optical fibers, a jacket, strength members, and water-swellable powder. The jacket is formed from a polymer and has a cavity defined therein. The one or more optical fibers extend through the cavity. Further, the jacket is non-round in cross-section and the strength members are encapsulated in the jacket on opposite sides of the cavity. The water-swellable powder is at least partially mechanically attached to an inner surface of the cavity, where the mechanical attachment of the water-swellable powder allows a portion of particles of the water-swellable powder to protrude beyond the surface and not be completely embedded therein.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: March 24, 2015
    Assignee: Corning Optical Communications LLC
    Inventors: Anne Germaine Bringuier, Rodney Maurice Burns, John Arthur Rowe, Catharina Lemckert Tedder, Brian Smith Witz
  • Patent number: 8989543
    Abstract: An optical cable comprises an optical fiber ribbon, a tension member and a sheath. The optical fiber ribbon is constructed by integrating a plurality of optical fibers arranged in parallel. The sheath is provided so as to surround the optical fiber ribbon. The sheath is used for protecting the optical cable. One optical fiber ribbon is arranged twistably within an inner space surrounded by the sheath.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: March 24, 2015
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Yuya Homma, Itaru Sakabe, Kazuyuki Sohma
  • Patent number: 8983255
    Abstract: Disclosed is a composite optical fiber which has high flexibility and is hard to break. The composite optical fiber comprises a larger-diameter optical fiber and smaller-diameter optical fibers each having a smaller diameter than that of the larger-diameter optical fiber, wherein the larger-diameter fiber and the smaller-diameter optical fibers are so arranged that the larger-diameter fiber is surrounded by the smaller-diameter optical fibers, and the smaller-diameter optical fibers that surround the larger-diameter optical fiber are made from a plastic material.
    Type: Grant
    Filed: June 6, 2011
    Date of Patent: March 17, 2015
    Assignees: Kuraray Co., Ltd., Japan Atomic Energy Agency
    Inventors: Osamu Shinji, Katashi Saito, Kiyoshi Oka
  • Patent number: 8983253
    Abstract: A hybrid cable has optical conductors and electrical conductors. The electrical conductors are selected to have varying resistances per unit length, depending upon the distance from a power source at which the conductor is expected to terminate. The use of varying resistance conductors can be used to balance the power supplied to external devices and to lower cable cost, size, and weight.
    Type: Grant
    Filed: February 20, 2012
    Date of Patent: March 17, 2015
    Assignee: Corning Cable Systems LLC
    Inventor: Bryan R. Roark
  • Patent number: 8983256
    Abstract: An optical fiber cable is provided as one capable of preventing damage of an inside tube and an outside tube. An optical fiber cable 1 is provided with an optical fiber 2 for propagating laser light, an inside tube 3 housing an end portion of this optical fiber 2, and an outside tube 4 arranged outside the inside tube 3 and surrounding the inside tube 3. A space portion 5 is provided between the optical fiber 2 and an inner peripheral surface of the inside tube 3.
    Type: Grant
    Filed: April 23, 2012
    Date of Patent: March 17, 2015
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Kazuhisa Konishi, Tomohiko Kanie, Kenichiro Takahashi, Osamu Shimakawa, Yuuichi Mitose
  • Publication number: 20150055920
    Abstract: The present invention provides optical-fiber communication cables with an improved water-blocking element that reduces or eliminates microbending caused by the water-swellable particulate powders by employing such water-swellable powders in conjunction with a smooth but perforated compression-resistant carrier tape. The water-blocking element is deployed within optical-fiber buffer tubes to water-block the buffer tubes and to minimize microbending that can occur when water-swellable particulate powders press against optical fibers.
    Type: Application
    Filed: October 1, 2014
    Publication date: February 26, 2015
    Inventor: Don Parris
  • Patent number: 8965160
    Abstract: Cables have reduced freespace, reduced tube diameters, and reduced strength member diameters. The cables are designed to pass robustness testing such as GR-20 while using smaller amounts of raw materials to produce.
    Type: Grant
    Filed: July 21, 2014
    Date of Patent: February 24, 2015
    Assignee: Corning Optical Communications LLC
    Inventors: Julian Latelle Greenwood, III, Scott Allen McDowell, Reginald Roberts, David Alan Seddon
  • Patent number: 8942527
    Abstract: A fiber optic cable for use in a downhole environment is disclosed. The fiber optic cable includes a tube having an interior region; an optical fiber disposed in the interior region of the tube; a gas in the interior region; and a gel in the interior region, wherein the gel is configured to reduce stress on the optical fiber in the presence of the gas at a temperature substantially near the flashpoint of the gel. One or more seals can be used to seal the gel and the inert gas in the interior region. In various aspects, the fiber optic cable can be used in a downhole environment.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: January 27, 2015
    Assignee: Baker Hughes Incorporated
    Inventors: Daniel S. Homa, Robert M. Harman, Christopher H. Lambert
  • Patent number: 8938144
    Abstract: An optical fiber cable including, in a radial direction outward, a central strength member, a first layer of loose buffer tubes stranded around the central strength member, at least one of the loose buffer tubes of the first layer containing at least one light waveguide, an intermediate layer, a second layer of loose buffer tubes stranded around the intermediate layer, at least one of the loose buffer tubes of the second layer containing at least one light waveguide, and a jacket surrounding the second layer of loose buffer tubes, wherein the intermediate layer is formed of a material having a high coefficient of friction.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: January 20, 2015
    Assignee: Draka Comteq B.V.
    Inventors: Jan Hennink, Jean-Pierre Bonicel, Pascal Maria Willem Bindels
  • Patent number: 8929702
    Abstract: A modular cable unit for oilfield wireline includes multiple cable modules. The cable modules are interchangeable to achieve a modular cable unit with desired telemetry and electrical properties to suit a specific application. The cable modules can be an optical fiber module, a power cable or an opto-electrical module assembly. The cable modules that make up the modular cable unit are preferably arranged in a triad configuration defining a substantially triangular tangent periphery and are surrounded by a polymeric casing having a circular periphery. The triad configuration of the modular cable unit contributes to an improved mechanical strength. A floating-tube type optical fiber element with improved mechanical strength is also disclosed.
    Type: Grant
    Filed: May 21, 2007
    Date of Patent: January 6, 2015
    Assignee: Schlumberger Technology Corporation
    Inventors: Joseph Varkey, Vladimir Hernandez-Solis, Marwan Moufarrej
  • Publication number: 20150003795
    Abstract: A fiber optic assembly includes a buffer tube forming an elongate passage and a plurality of optical fibers positioned therein. The buffer tube includes at least one layer of a composite material that includes a base material and a filler material blended therein. Particles of the filler material have an acicular structure, having a longest dimension that is on average at least ten times a narrowest dimension of the particles. Further the buffer tube has kink resistance.
    Type: Application
    Filed: June 24, 2014
    Publication date: January 1, 2015
    Inventors: Adra Smith Baca, Anne Germaine Bringuier, Christopher Mark Quinn, Lori Ann Seeley, Brandon Robert Williamson