GB2021282A - Submarine optical fibre cable - Google Patents

Submarine optical fibre cable

Info

Publication number
GB2021282A
GB2021282A GB7917401A GB7917401A GB2021282A GB 2021282 A GB2021282 A GB 2021282A GB 7917401 A GB7917401 A GB 7917401A GB 7917401 A GB7917401 A GB 7917401A GB 2021282 A GB2021282 A GB 2021282A
Authority
GB
United Kingdom
Prior art keywords
matrix
optical fibres
cable
central
advantageously
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
GB7917401A
Other versions
GB2021282B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Post Office
Original Assignee
Post Office
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 Post Office filed Critical Post Office
Priority to GB7917401A priority Critical patent/GB2021282B/en
Publication of GB2021282A publication Critical patent/GB2021282A/en
Application granted granted Critical
Publication of GB2021282B publication Critical patent/GB2021282B/en
Expired legal-status Critical Current

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
    • G02B6/4407—Optical cables with internal fluted support member
    • 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
    • G02B6/4427—Pressure resistant cables, e.g. undersea cables

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Insulated Conductors (AREA)

Abstract

An optical fibre cable suitable for underwater use consists essentially of a metal-reinforced matrix 32 of, for example, polypropylene, which surrounds the optical fibres 30. The matrix is reinforced against radial loading by an inner set of metallic strength members 39 which preferably take the form of a wire or strip wound in a helix of relatively short pitch. Two layers may advantageously be used (Fig. 2a not shown). Tensile strength is provided by one or more, advantageously two, layers 34, 35, 53 of substantially longitudinal (slow-helical) wires embedded in the matrix radially outwardly of the inner strength members. In one embodiment of the invention (not shown), the optical fibres are loose laid in the central duct of the cable in a hydrophobic jelly or viscous liquid. In a second embodiment, preferred for depths of 6000 metres or more, the cable includes a central strength member, for example. an extruded copper rod 50, giving increased resistance to radial loading. The optical fibres are arranged in individual passages 51 around the central strength member and are surrounded by a hydrophobic jelly, a viscous liquid or a selected solid polymeric material. <IMAGE>
GB7917401A 1978-05-22 1979-05-18 Submarine optical fibre cable Expired GB2021282B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7917401A GB2021282B (en) 1978-05-22 1979-05-18 Submarine optical fibre cable

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2118278 1978-05-22
GB7917401A GB2021282B (en) 1978-05-22 1979-05-18 Submarine optical fibre cable

Publications (2)

Publication Number Publication Date
GB2021282A true GB2021282A (en) 1979-11-28
GB2021282B GB2021282B (en) 1982-06-03

Family

ID=26255196

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7917401A Expired GB2021282B (en) 1978-05-22 1979-05-18 Submarine optical fibre cable

Country Status (1)

Country Link
GB (1) GB2021282B (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2470392A1 (en) * 1979-11-22 1981-05-29 Noane Georges Le OPTICAL FIBER CABLES, PARTICULARLY FOR SUBSEA TRANSMISSION SYSTEMS
FR2475238A1 (en) * 1980-02-06 1981-08-07 Lyonnaise Transmiss Optiques OPTICAL FIBER CABLE, WATERTIGHT, AND METHOD AND DEVICE FOR MANUFACTURING THE SAME
FR2489536A1 (en) * 1980-08-29 1982-03-05 Sumitomo Electric Industries OPTICAL FIBER CABLE AND METHOD FOR PRODUCING THE SAME
FR2511161A1 (en) * 1981-08-05 1983-02-11 Foptica OPTICAL CABLE FOR SUPPORTING HIGH PRESSURES
GB2119956A (en) * 1982-04-22 1983-11-23 Bicc Plc An improved flexible elongate body
GB2145536A (en) * 1983-08-18 1985-03-27 Kokusai Denshin Denwa Co Ltd Optical fiber cable
GB2152235A (en) * 1981-07-20 1985-07-31 Chevron Res Armoured optical fibre cable for use in an optical communication system for drill hole logging
DE3513858A1 (en) * 1984-04-19 1985-10-24 Società Cavi Pirelli S.p.A., Mailand/Milano UNDERWATER MESSAGE TRANSMISSION CABLES WITH OPTICAL FIBERS
DE3513859A1 (en) * 1984-04-19 1985-10-31 Società Cavi Pirelli S.p.A., Mailand/Milano UNDERWATER MESSAGE TRANSMISSION CABLES WITH A MULTIPLE OF OPTICAL FIBERS
EP0193780A2 (en) * 1985-02-26 1986-09-10 PIRELLI CAVI S.p.A. Submarine cable for optical-fibres telecommunications
US4623218A (en) * 1981-02-20 1986-11-18 Michel Laurette Optical fibre cable and method of and apparatus for determining location of a break therein
EP0203538A2 (en) * 1985-05-29 1986-12-03 PIRELLI CAVI S.p.A. Submarine cable for optical-fibres telecommunications
US4725121A (en) * 1985-02-26 1988-02-16 Societa' Cavi Pirelli S.P.A. Submarine optical fiber cable with central tension member and filled with incompressible fluid
EP0256704B1 (en) * 1986-08-07 1992-04-22 Telephone Cables Limited Optical cables
US5179619A (en) * 1990-11-13 1993-01-12 Pirelli Cavi S.P.A. Optical fibre element comprising a polyacrylate coating layer reticulated by UV radiation and an H2 -absorbing buffer
US5185841A (en) * 1990-11-29 1993-02-09 Pirelli Cavi S.P.A. Optical fibre element comprising an optical fibre housing constituted by a polyolefin material, and an h2-absorbing buffer
US10133017B2 (en) * 2015-08-07 2018-11-20 Pgs Geophysical As Vented optical tube

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2470392A1 (en) * 1979-11-22 1981-05-29 Noane Georges Le OPTICAL FIBER CABLES, PARTICULARLY FOR SUBSEA TRANSMISSION SYSTEMS
EP0034286B1 (en) * 1980-02-06 1984-10-24 COMPAGNIE LYONNAISE DE TRANSMISSIONS OPTIQUES Société anonyme dite: Process and device for manufacturing a waterproof fibre-optical cable
FR2475238A1 (en) * 1980-02-06 1981-08-07 Lyonnaise Transmiss Optiques OPTICAL FIBER CABLE, WATERTIGHT, AND METHOD AND DEVICE FOR MANUFACTURING THE SAME
GB2082790A (en) * 1980-08-29 1982-03-10 Nippon Telegraph & Telephone Optical fibre in grooved central member type cable and manufacture
US4491386A (en) * 1980-08-29 1985-01-01 Nippon Telegraph & Telephone Public Corporation Optical fiber cable and process for production thereof
FR2489536A1 (en) * 1980-08-29 1982-03-05 Sumitomo Electric Industries OPTICAL FIBER CABLE AND METHOD FOR PRODUCING THE SAME
US4623218A (en) * 1981-02-20 1986-11-18 Michel Laurette Optical fibre cable and method of and apparatus for determining location of a break therein
GB2152235A (en) * 1981-07-20 1985-07-31 Chevron Res Armoured optical fibre cable for use in an optical communication system for drill hole logging
FR2511161A1 (en) * 1981-08-05 1983-02-11 Foptica OPTICAL CABLE FOR SUPPORTING HIGH PRESSURES
GB2119956A (en) * 1982-04-22 1983-11-23 Bicc Plc An improved flexible elongate body
GB2145536A (en) * 1983-08-18 1985-03-27 Kokusai Denshin Denwa Co Ltd Optical fiber cable
US4676590A (en) * 1984-04-19 1987-06-30 Societa' Cavi Pirelli S.P.A. Pressure resistant submarine optical fiber cable
DE3513858A1 (en) * 1984-04-19 1985-10-24 Società Cavi Pirelli S.p.A., Mailand/Milano UNDERWATER MESSAGE TRANSMISSION CABLES WITH OPTICAL FIBERS
DE3513859A1 (en) * 1984-04-19 1985-10-31 Società Cavi Pirelli S.p.A., Mailand/Milano UNDERWATER MESSAGE TRANSMISSION CABLES WITH A MULTIPLE OF OPTICAL FIBERS
US4690498A (en) * 1984-04-19 1987-09-01 Societa Cavi Pirelli S.P.A. Pressure resistant submarine optical fiber cable
EP0193780A2 (en) * 1985-02-26 1986-09-10 PIRELLI CAVI S.p.A. Submarine cable for optical-fibres telecommunications
US4722589A (en) * 1985-02-26 1988-02-02 Societa' Cavi Pirelli S.P.A. Pressure resistant optical fiber cable
US4725121A (en) * 1985-02-26 1988-02-16 Societa' Cavi Pirelli S.P.A. Submarine optical fiber cable with central tension member and filled with incompressible fluid
EP0193780A3 (en) * 1985-02-26 1988-03-23 Societa Cavi Pirelli S.P.A. Submarine cable for optical-fibres telecommunications
EP0203538A2 (en) * 1985-05-29 1986-12-03 PIRELLI CAVI S.p.A. Submarine cable for optical-fibres telecommunications
EP0203538A3 (en) * 1985-05-29 1987-09-30 PIRELLI CAVI S.p.A. Submarine cable for optical-fibres telecommunications
US4697875A (en) * 1985-05-29 1987-10-06 Societa Cavi Pirelli S.P.A. Pressure resistant submarine optical fiber cable
EP0256704B1 (en) * 1986-08-07 1992-04-22 Telephone Cables Limited Optical cables
US5179619A (en) * 1990-11-13 1993-01-12 Pirelli Cavi S.P.A. Optical fibre element comprising a polyacrylate coating layer reticulated by UV radiation and an H2 -absorbing buffer
US5185841A (en) * 1990-11-29 1993-02-09 Pirelli Cavi S.P.A. Optical fibre element comprising an optical fibre housing constituted by a polyolefin material, and an h2-absorbing buffer
US10133017B2 (en) * 2015-08-07 2018-11-20 Pgs Geophysical As Vented optical tube

Also Published As

Publication number Publication date
GB2021282B (en) 1982-06-03

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 19990517