GB2023060A - Improvements in optical cables - Google Patents

Improvements in optical cables

Info

Publication number
GB2023060A
GB2023060A GB7919563A GB7919563A GB2023060A GB 2023060 A GB2023060 A GB 2023060A GB 7919563 A GB7919563 A GB 7919563A GB 7919563 A GB7919563 A GB 7919563A GB 2023060 A GB2023060 A GB 2023060A
Authority
GB
United Kingdom
Prior art keywords
filament
grooves
die
plastics
extruded
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
GB7919563A
Other versions
GB2023060B (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.)
Nortel Networks Ltd
Original Assignee
Northern Telecom Ltd
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 Northern Telecom Ltd filed Critical Northern Telecom Ltd
Publication of GB2023060A publication Critical patent/GB2023060A/en
Application granted granted Critical
Publication of GB2023060B publication Critical patent/GB2023060B/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00663—Production of light guides
    • 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
    • G02B6/4479—Manufacturing methods of optical cables
    • G02B6/4489—Manufacturing methods of optical cables of central supporting members of lobe structure

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

An optical cable has dielectric optical waveguides contained in helical grooves 3 of a central filament 2, which has been formed by extruding plastics over a central stranded wire member 1, the grooves 3 following helical paths which may be of alternately opposite lay direction along the filament. The plastics of the filament 2 is extruded from a stationary die 9 through which the wire member 1 is drawn, the filament being engaged downstream of the die 9 and twisted in alternately opposite directions so that the grooves 3 formed by the die 9 are caused to follow helical paths where the plastics exits from the die 9. The extruded filament 2 may be twisted by blades 18 (or wheels) of a rotated sleeve 16, which engage in the grooves 3, or alternatively by means of wheels of resilient material which engage the surface of the filament 2. Dielectric optical waveguides are disposed in the grooves 3 and the whole is surrounded by an extruded plastics sheath to produce the optical cable. <IMAGE>
GB7919563A 1978-06-07 1979-06-05 Optical cables Expired GB2023060B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA304,916A CA1093877A (en) 1978-06-07 1978-06-07 Optical waveguide cables

Publications (2)

Publication Number Publication Date
GB2023060A true GB2023060A (en) 1979-12-28
GB2023060B GB2023060B (en) 1983-02-02

Family

ID=4111636

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7919563A Expired GB2023060B (en) 1978-06-07 1979-06-05 Optical cables

Country Status (5)

Country Link
JP (1) JPS55597A (en)
CA (1) CA1093877A (en)
DE (1) DE2923132A1 (en)
FR (1) FR2431711B1 (en)
GB (1) GB2023060B (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2500174A1 (en) * 1981-02-17 1982-08-20 Lignes Telegraph Telephon SIMULTANEOUS INSTALLATION HEAD OF OPTICAL FIBERS IN A GROOVE CYLINDRICAL SUPPORT AND DEVICE FOR MANUFACTURING WIRING COMPONENTS COMPRISING SUCH A HEAD
FR2502346A1 (en) * 1981-03-20 1982-09-24 Cables De Lyon Geoffroy Delore DEVICE FOLLOWING NO HELICOIDAL GROOVES
FR2517074A1 (en) * 1981-11-24 1983-05-27 Bicc Plc OPTICAL CABLE AND MANUFACTURING METHOD THEREOF
GB2121209A (en) * 1982-05-31 1983-12-14 Pirelli Cavi Spa Apparatus for manufacturing an optical fibres cable
FR2574951A1 (en) * 1984-12-17 1986-06-20 Pirelli Cavi Spa METHOD AND INSTALLATION FOR THE PRODUCTION OF A CORE HAVING OPEN PROPELLER GROOVES FOR ELEMENTARY FIBER OPTIC CABLES
EP0186992A1 (en) * 1984-12-19 1986-07-09 Telephone Cables Limited Optical cables
FR2576425A1 (en) * 1985-01-24 1986-07-25 Pourtier Pere Fils Ets Speed-regulating controlled device for a machine for winding optical fibres onto a helically grooved carrier rod
GB2181090A (en) * 1985-10-02 1987-04-15 Telephone Cables Ltd Making an optical fibre cable core, with helical fibre containing channels
GB2185334A (en) * 1986-01-07 1987-07-15 Bicc Plc Elongate flexible core for optical cable
GB2186520A (en) * 1986-02-07 1987-08-19 Austral Standard Cables Pty Lt Manufacture of helically grooved optical cable core
CN114185141A (en) * 2022-02-15 2022-03-15 长飞光纤光缆股份有限公司 Framework groove type optical cable framework processing method and device and framework groove type optical cable

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5744107A (en) * 1980-08-29 1982-03-12 Nippon Telegr & Teleph Corp <Ntt> Optical fiber cable and its manufacture
FR2494452A1 (en) * 1980-11-20 1982-05-21 Cables De Lyon Geoffroy Delore METHOD OF MANUFACTURING A FIBER OPTIC CABLE
FR2497963A1 (en) * 1981-01-09 1982-07-16 Cables De Lyon Geoffroy Delore METHOD FOR MANUFACTURING OPTICAL FIBER CABLE
JPS587607A (en) * 1981-07-07 1983-01-17 Sumitomo Electric Ind Ltd Optical fiber composite overhead line and its manufacture
JPS58180785A (en) * 1982-04-16 1983-10-22 Max Co Ltd Electronic circuit for unloader of compressor
JPS5912104U (en) * 1982-07-14 1984-01-25 古河電気工業株式会社 self-supporting optical cable
JPS60177312A (en) * 1984-02-24 1985-09-11 Dainichi Nippon Cables Ltd Manufacture of optical fiber cable
IT1175835B (en) * 1984-04-19 1987-07-15 Pirelli Cavi Spa SUBMARINE CABLE FOR FIBER OPTIC TELECOMMUNICATIONS
US4813014A (en) * 1986-04-14 1989-03-14 Phi Technologies, Inc. Digital audio memory system
GB8713792D0 (en) * 1987-06-12 1987-07-15 Bicc Plc Elongate flexible core
JPH0750231B2 (en) * 1987-12-25 1995-05-31 宇部日東化成株式会社 Optical fiber carrying spacer
DE3913372A1 (en) * 1989-04-24 1990-10-25 Rheydt Kabelwerk Ag OPTICAL CABLE
JP4933331B2 (en) * 2006-04-04 2012-05-16 宇部日東化成株式会社 Method and apparatus for manufacturing spiral spacer

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1250478A (en) * 1968-02-23 1971-10-20
DE2449439C3 (en) * 1974-10-15 1984-08-23 Siemens AG, 1000 Berlin und 8000 München Communication cables with light guides or light guide bundles as transmission elements
DE2511019C2 (en) * 1975-03-11 1984-08-23 Siemens AG, 1000 Berlin und 8000 München Basic element for the construction of optical cables
FR2312788A1 (en) * 1975-05-27 1976-12-24 Lenoane Georges Fibre optics transmission cable - has sheath and plastics core with spiral slots in which fibres are placed
FR2388931A1 (en) * 1977-04-27 1978-11-24 Lignes Telegraph Telephon METHOD OF MANUFACTURING WIRING ELEMENTS CONTAINING OPTICAL FIBERS BY VERTICAL MACHINE

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0058594A1 (en) * 1981-02-17 1982-08-25 Lignes Telegraphiques Et Telephoniques L.T.T. Apparatus for the simultaneous insertion of optical fibres in a cylindrical support having grooves, and device for manufacturing cable elements comprising such an apparatus
FR2500174A1 (en) * 1981-02-17 1982-08-20 Lignes Telegraph Telephon SIMULTANEOUS INSTALLATION HEAD OF OPTICAL FIBERS IN A GROOVE CYLINDRICAL SUPPORT AND DEVICE FOR MANUFACTURING WIRING COMPONENTS COMPRISING SUCH A HEAD
FR2502346A1 (en) * 1981-03-20 1982-09-24 Cables De Lyon Geoffroy Delore DEVICE FOLLOWING NO HELICOIDAL GROOVES
EP0061124A1 (en) * 1981-03-20 1982-09-29 LES CABLES DE LYON Société anonyme dite: Following device for helical grooves
FR2517074A1 (en) * 1981-11-24 1983-05-27 Bicc Plc OPTICAL CABLE AND MANUFACTURING METHOD THEREOF
GB2121209A (en) * 1982-05-31 1983-12-14 Pirelli Cavi Spa Apparatus for manufacturing an optical fibres cable
US4497164A (en) * 1982-05-31 1985-02-05 Societa'cavi Pirelli S.P.A. Apparatus for manufacturing an optical fiber cable with optical fibers in grooves in the cable core
GB2171637A (en) * 1984-12-17 1986-09-03 Pirelli Cavi Spa Improvements relating to the manufacture of cores helically extending grooves
FR2574951A1 (en) * 1984-12-17 1986-06-20 Pirelli Cavi Spa METHOD AND INSTALLATION FOR THE PRODUCTION OF A CORE HAVING OPEN PROPELLER GROOVES FOR ELEMENTARY FIBER OPTIC CABLES
EP0186992A1 (en) * 1984-12-19 1986-07-09 Telephone Cables Limited Optical cables
FR2576425A1 (en) * 1985-01-24 1986-07-25 Pourtier Pere Fils Ets Speed-regulating controlled device for a machine for winding optical fibres onto a helically grooved carrier rod
GB2181090A (en) * 1985-10-02 1987-04-15 Telephone Cables Ltd Making an optical fibre cable core, with helical fibre containing channels
GB2181090B (en) * 1985-10-02 1990-04-18 Telephone Cables Ltd Optical fibre cable
GB2185334A (en) * 1986-01-07 1987-07-15 Bicc Plc Elongate flexible core for optical cable
US4793685A (en) * 1986-01-07 1988-12-27 Bicc Plc Optical cable with nonmetallic reinforcing elements
GB2185334B (en) * 1986-01-07 1989-10-25 Bicc Plc Elongate flexible core for optical cable
GB2186520A (en) * 1986-02-07 1987-08-19 Austral Standard Cables Pty Lt Manufacture of helically grooved optical cable core
CN114185141A (en) * 2022-02-15 2022-03-15 长飞光纤光缆股份有限公司 Framework groove type optical cable framework processing method and device and framework groove type optical cable

Also Published As

Publication number Publication date
FR2431711B1 (en) 1986-04-11
CA1093877A (en) 1981-01-20
DE2923132A1 (en) 1979-12-13
FR2431711A1 (en) 1980-02-15
DE2923132C2 (en) 1987-02-19
JPS55597A (en) 1980-01-05
GB2023060B (en) 1983-02-02

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee