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WO1994022039A1 - Cable coaxial a fibre optique et assemblage avec un connecteur - Google Patents

Cable coaxial a fibre optique et assemblage avec un connecteur Download PDF

Info

Publication number
WO1994022039A1
WO1994022039A1 PCT/US1993/003871 US9303871W WO9422039A1 WO 1994022039 A1 WO1994022039 A1 WO 1994022039A1 US 9303871 W US9303871 W US 9303871W WO 9422039 A1 WO9422039 A1 WO 9422039A1
Authority
WO
WIPO (PCT)
Prior art keywords
cable
conductive metal
optical fiber
polymer
layer
Prior art date
Application number
PCT/US1993/003871
Other languages
English (en)
Inventor
Roddy Mckee Bullock
Alfredo Cedrone
Original Assignee
W.L. Gore & Associates, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by W.L. Gore & Associates, Inc. filed Critical W.L. Gore & Associates, Inc.
Publication of WO1994022039A1 publication Critical patent/WO1994022039A1/fr

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401—Optical cables
    • G02B6/4415—Cables for special applications
    • G02B6/4416—Heterogeneous cables
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401—Optical cables
    • G02B6/4402—Optical cables with one single optical waveguide
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401—Optical cables
    • G02B6/4429—Means specially adapted for strengthening or protecting the cables
    • G02B6/443—Protective covering
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/18—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
    • H01B11/1891—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor comprising auxiliary conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/22—Cables including at least one electrical conductor together with optical fibres

Definitions

  • the invention relates to coaxial signal communication cables which are composite optical fiber and electrically conductive signal cables and to connectors for their termination.
  • the cable of the invention provides such a cable and a connector for its termination.
  • the invention comprises a composite fiber optic/electrical coaxial signal cable which has a fiber optic core which comprises an optical fiber clad with a material having a higher refractive index than the optical fiber and a soft polymer buffer layer surrounding the fiber and cladding.
  • a soft polymer buffer layer preferably of porous expanded polytetrafluoroethylene (ePTFE) surrounds the clad core and optionally a tape wrap of metallized polymer tape, the metal facing outwardly to contact a layer of conductive metal strands spiralled around its periphery.
  • a layer of insulation surrounds the conductive metal strands.
  • the insulation is preferably a porous polymer, especially porous ePTFE.
  • a conductive metal shield surrounds the layer of insulation and optionally a protective polymer jacket surrounding the cable.
  • An assembly of the cable of the invention is made with a connector which comprises a hollow conductive metal tube which is provided with means to terminate two levels of conductive metal, the spiralled metal strands and the shield.
  • the metal strands and the shield separated by insulation in the center of the assembly form a precisely configured center passage to accommodate an optical fiber for accurate abutment with another like optical fiber.
  • the fiber optic core may be of equal diameter to the spiralled conductive strands which are also of equal diameter.
  • the optical fiber may be silicaceous, glass clad with silica or glass, silica clad with glass or silica of higher refractive index, or may be an organic polymer clad with a hard polymer.
  • the cable of the invention may optionally have a strength member of strong organic fibers braided around it. Both the soft polymer buffer surrounding the clad optical fiber and the layer of insulation surrounding the spiralled conductive metal strands are preferably of porous ePTFE.
  • Figure 1 is a perspective view of a cable of the invention with the layers cut away to show structure.
  • Figure 2 is a cross-sectional side view of a cable of the invention partially inserted into a connector.
  • Figure 1 displays a perspective view of a cable of the invention with the various layers cut away so that the structure of the cable can be easily viewed and understood.
  • the core of the cable comprises layers i, 2, 3, 4, and 5.
  • An optical fiber 1 is clad with a hard polymer layer 2 in the case of an organic polymer fiber or a glass or silica layer 2 if fiber 1 comprises glass or silica.
  • Layer 3 is a buffer layer, usually of a soft polymer, such as a foam, but preferably comprises porous ePTFE, which is soft and resilient to provide excellent buffering properties for the optical fiber 1.
  • the preferred ePTFE is that disclosed in U.S. Patents 3,953,566, 3,962,153, 4,096,227,
  • Buffer layer 3 may optionally be covered with a polymer tape layer 4 which may be metallized on its exterior to enhance conductivity of the layer 6 of electrical conductors.
  • Metal coating 5 on tape 4 may be any conductive metal, but is usually aluminum.
  • Polymer tape layer 4 may comprise any polymer customarily used to tape wrap an electrical conductor or optical fiber, but is preferably polyester, an example of which is Milene ® polyester available from W. L. Gore & Associates, Inc.
  • the metallized tape layer is surrounded and in electrical contact with a layer 6 of electrical conductors which may be any of the metals and alloys customarily employed for electrical conductors in the wire and cable art. Copper, copper alloys, or silver plated copper or copper alloy are preferred.
  • a layer of insulation 7 is then placed over spiralled electrical conductor layer 6 usually by tape wrapping, such as in the case of porous ePTFE tape, the preferred insulation, but may be extruded over conductor layer 6 in the case of a thermoplastic insulation or foamed over layer 6.
  • a foamed polyolefin polyester, or thermoplastic fluorocarbon resin may be used, for example.
  • a conductive shield 8 which may be metal tape, braided wire or metal tape strips or strands, or metallized polymer tape.
  • Those metals and alloys known to be useful for the purpose may be used here, such as copper, copper alloys, steel, aluminum, and silver plated strands of these metals, for example.
  • ePTFE ePTFE
  • the overall diameter of the finished composite cable is essentially the same as a standard electrical coaxial cable having a center conductor of equivalent guage size and a dielectric of non-porous material .
  • Over shield 8 may be optionally placed a strength member 9, which is usually of braided strong polymer fibers, such as polyester, polyamide-imide, polyimide, polyamide or aromatic polyamide, and liquid crystal polymer for example.
  • a strength member 9 which is usually of braided strong polymer fibers, such as polyester, polyamide-imide, polyimide, polyamide or aromatic polyamide, and liquid crystal polymer for example.
  • an outer protective jacket JJ may be used, which is extruded or tape wrapped from polymers, such as polyvinyl chloride, polyethylene, polypropylene, polyurethane rubber, or rubber, for example.
  • Figure 2 shows a cross-sectional piece of a cable of the invention partially inserted into a connector, which provides electrical contact member 22 for contact with electrical conductor layers 6 and 7 of the cable and shield layer 8 of the cable by contact member 21.
  • Precisely contoured space is provided within the center of the connector for the fiber optic core of the cable (layers I, 2, and 3) so that the core will abut precisely a similar core affixed to the connector to provide optical signal connection and transmission through optical fiber 1.
  • the symmetrical construction of the cable of the invention advantageously provides resistance to outside pressure, even bending, saves space and material to provide a smaller cheaper cable, and provides a cable having both fiber optic and coaxial electrical signals in a small cable the same size as for coaxial electrical signals only. Since the cable can be made smaller than the usual composite electrical/fiber optic cable, the hydrodynamic, aerodynamic, and fluid dynamic properties are improved, since both size and shape are important for improvement in those properties. If greater pressure resistance is desired in a cable, a full density insulation can be used for insulation 7, where resulting lesser signal properties can be tolerated.
  • the cable of the invention is especially useful for ta per- resistant security cables, underwater cables, down-hole cables in petroleum or gas wells, hybrid signal and power cables, hybrid optical signal plus electrical signal cables, and hybrid optical power plus electrical signal or power cables.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Communication Cables (AREA)

Abstract

Câble coaxial composite à signal électrique/fibre optique dans lequel une fibre optique gainée et plaquée est entourée de torons de conducteur de signal électrique à l'intérieur des couches ordinaires des élements d'isolation, de blindage et de renforcement, et d'une gaine externe, ceci formant un petit câble hybride qui est aussi petit qu'un câble coaxial à signal électrique mais qui offre également les avantages d'un câble de transmission de signal par fibre optique.
PCT/US1993/003871 1993-03-16 1993-04-23 Cable coaxial a fibre optique et assemblage avec un connecteur WO1994022039A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US3367993A 1993-03-16 1993-03-16
US08/033,679 1993-03-16

Publications (1)

Publication Number Publication Date
WO1994022039A1 true WO1994022039A1 (fr) 1994-09-29

Family

ID=21871808

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1993/003871 WO1994022039A1 (fr) 1993-03-16 1993-04-23 Cable coaxial a fibre optique et assemblage avec un connecteur

Country Status (1)

Country Link
WO (1) WO1994022039A1 (fr)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2360853A (en) * 2000-03-30 2001-10-03 Corning Cable Sys Llc Micro composite fiber optic/electrical cable
EP1363294A3 (fr) * 2002-05-14 2004-02-18 Agilent Technologies, Inc. Ligne de transmission électro-optique
WO2012080207A1 (fr) 2010-12-16 2012-06-21 Thermo Electron Manufacturing Limited Câble et système pour la transmission de signaux optiques et électriques
US20140205294A1 (en) * 2013-01-23 2014-07-24 Cox Communications, Inc. Integrating Optical Fiber with Coaxial Cable
CN104464951A (zh) * 2014-12-18 2015-03-25 中利科技集团股份有限公司 含有同轴电单元的光电混合缆及其制造方法
CN105529109A (zh) * 2016-02-18 2016-04-27 中利科技集团股份有限公司 铝合金导体同轴电单元型光电混合缆
WO2016078428A1 (fr) * 2014-11-18 2016-05-26 中天日立射频电缆有限公司 Câble coaxial à fuite composite à câble optique intégré, et son procédé de fabrication
RU183643U1 (ru) * 2018-06-18 2018-09-28 Общество с ограниченной ответственностью "Научно-исследовательский институт технических систем "Пилот" Оптоволоконный бронированный кабель для измерения температурного профиля нефтяных и газовых скважин
CN109830343A (zh) * 2019-01-09 2019-05-31 安徽中邦特种电缆科技有限公司 一种轻型航空用光电组合电缆
WO2020021102A1 (fr) * 2018-07-27 2020-01-30 Schott Ag Agencement de conducteur opto-électrique comprenant un guide d'ondes optiques et une couche électroconductrice
CN111243793A (zh) * 2020-03-17 2020-06-05 东方交联电力电缆有限公司 一种电压35kV光纤复合冷绝缘超导电力电缆
EP3769662A1 (fr) * 2019-07-26 2021-01-27 Schott Ag Système de conducteur optique-électrique pourvu de manchon adaptateur
EP3910380A1 (fr) * 2020-05-05 2021-11-17 Sercel Câble hybride avec dispositif de connexion
US20230178267A1 (en) * 2020-04-29 2023-06-08 Ctc Global Corporation Strength member assemblies and overhead electrical cables incorporating optical fibers
WO2024085777A1 (fr) 2022-10-18 2024-04-25 Rzeszów University of Technology Câble d'alimentation et de télécommunications
GB2639889A (en) * 2024-03-27 2025-10-08 Continental Autonomous Mobility Germany GmbH Coaxial cable

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4239335A (en) * 1978-08-28 1980-12-16 Sea-Log Corporation Fiber reinforced optical fiber cable
FR2509872A1 (fr) * 1981-07-15 1983-01-21 Philips Nv Cable de communication optique presentant un guide d'onde lumineuse et un recouvrement secondaire resistant a la traction
GB2106663A (en) * 1980-07-24 1983-04-13 Post Office Optical fibre cable
US4896939A (en) * 1987-10-30 1990-01-30 D. G. O'brien, Inc. Hybrid fiber optic/electrical cable and connector
EP0449718A1 (fr) * 1990-03-27 1991-10-02 Thomson Video Equipement Câble mixte électrique et optique et application à la liaison entre une tête de camera et une unité de contrôle
EP0516931A1 (fr) * 1991-06-03 1992-12-09 Deutsche Aerospace Airbus Gesellschaft mit beschränkter Haftung Ligne ayant au moins deux canaux de transmission
EP0527266A1 (fr) * 1991-08-12 1993-02-17 Corning Incorporated Fibre optique avec couche tampon dénudable bien adjustée

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4239335A (en) * 1978-08-28 1980-12-16 Sea-Log Corporation Fiber reinforced optical fiber cable
GB2106663A (en) * 1980-07-24 1983-04-13 Post Office Optical fibre cable
FR2509872A1 (fr) * 1981-07-15 1983-01-21 Philips Nv Cable de communication optique presentant un guide d'onde lumineuse et un recouvrement secondaire resistant a la traction
US4896939A (en) * 1987-10-30 1990-01-30 D. G. O'brien, Inc. Hybrid fiber optic/electrical cable and connector
EP0449718A1 (fr) * 1990-03-27 1991-10-02 Thomson Video Equipement Câble mixte électrique et optique et application à la liaison entre une tête de camera et une unité de contrôle
EP0516931A1 (fr) * 1991-06-03 1992-12-09 Deutsche Aerospace Airbus Gesellschaft mit beschränkter Haftung Ligne ayant au moins deux canaux de transmission
EP0527266A1 (fr) * 1991-08-12 1993-02-17 Corning Incorporated Fibre optique avec couche tampon dénudable bien adjustée

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2360853A (en) * 2000-03-30 2001-10-03 Corning Cable Sys Llc Micro composite fiber optic/electrical cable
EP1363294A3 (fr) * 2002-05-14 2004-02-18 Agilent Technologies, Inc. Ligne de transmission électro-optique
WO2012080207A1 (fr) 2010-12-16 2012-06-21 Thermo Electron Manufacturing Limited Câble et système pour la transmission de signaux optiques et électriques
US20140205294A1 (en) * 2013-01-23 2014-07-24 Cox Communications, Inc. Integrating Optical Fiber with Coaxial Cable
US9355760B2 (en) * 2013-01-23 2016-05-31 Cox Communications, Inc. Integrating optical fiber with coaxial cable
WO2016078428A1 (fr) * 2014-11-18 2016-05-26 中天日立射频电缆有限公司 Câble coaxial à fuite composite à câble optique intégré, et son procédé de fabrication
CN104464951A (zh) * 2014-12-18 2015-03-25 中利科技集团股份有限公司 含有同轴电单元的光电混合缆及其制造方法
CN104464951B (zh) * 2014-12-18 2016-04-20 中利科技集团股份有限公司 含有同轴电单元的光电混合缆及其制造方法
CN105590671A (zh) * 2014-12-18 2016-05-18 王笑梅 具有同轴电单元的光电混合缆
CN105632602A (zh) * 2014-12-18 2016-06-01 王笑梅 含有同轴电单元的光电复合缆
CN105529109A (zh) * 2016-02-18 2016-04-27 中利科技集团股份有限公司 铝合金导体同轴电单元型光电混合缆
CN105529109B (zh) * 2016-02-18 2017-02-08 中利科技集团股份有限公司 铝合金导体同轴电单元型光电混合缆
RU183643U1 (ru) * 2018-06-18 2018-09-28 Общество с ограниченной ответственностью "Научно-исследовательский институт технических систем "Пилот" Оптоволоконный бронированный кабель для измерения температурного профиля нефтяных и газовых скважин
WO2020021102A1 (fr) * 2018-07-27 2020-01-30 Schott Ag Agencement de conducteur opto-électrique comprenant un guide d'ondes optiques et une couche électroconductrice
US11899257B2 (en) 2018-07-27 2024-02-13 Schott Ag Optical-electrical conductor assembly comprising an optical waveguide and an electrically conductive layer
CN109830343A (zh) * 2019-01-09 2019-05-31 安徽中邦特种电缆科技有限公司 一种轻型航空用光电组合电缆
EP3769662A1 (fr) * 2019-07-26 2021-01-27 Schott Ag Système de conducteur optique-électrique pourvu de manchon adaptateur
US11984238B2 (en) 2019-07-26 2024-05-14 Schott Ag Optoelectrical guide/conductor system with adapter sleeve
CN111243793A (zh) * 2020-03-17 2020-06-05 东方交联电力电缆有限公司 一种电压35kV光纤复合冷绝缘超导电力电缆
US20230178267A1 (en) * 2020-04-29 2023-06-08 Ctc Global Corporation Strength member assemblies and overhead electrical cables incorporating optical fibers
EP3910380A1 (fr) * 2020-05-05 2021-11-17 Sercel Câble hybride avec dispositif de connexion
US11270815B2 (en) 2020-05-05 2022-03-08 Sercel Hybrid cable with connecting device
WO2024085777A1 (fr) 2022-10-18 2024-04-25 Rzeszów University of Technology Câble d'alimentation et de télécommunications
GB2639889A (en) * 2024-03-27 2025-10-08 Continental Autonomous Mobility Germany GmbH Coaxial cable

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