GB1340849A - Optical fibres - Google Patents

Optical fibres

Info

Publication number
GB1340849A
GB1340849A GB1340849DA GB1340849A GB 1340849 A GB1340849 A GB 1340849A GB 1340849D A GB1340849D A GB 1340849DA GB 1340849 A GB1340849 A GB 1340849A
Authority
GB
United Kingdom
Prior art keywords
glass
core
fused
tube
powder
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.)
Expired
Application number
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB1340849A publication Critical patent/GB1340849A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
    • C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
    • C03B37/027—Fibres composed of different sorts of glass, e.g. glass optical fibres

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Surface Treatment Of Glass Fibres Or Filaments (AREA)

Abstract

1340849 Optical fibre STANDARD TELEPHONES & CABLES Ltd 6 April 1972 15841/72 Heading C1M An optical fibre consisting of a glass core region surrounded by a lower refractive index glass cladding is produced by introducing a powdered core glass or a powdered material precursor of the core glass 23 into a vertically disposed tube 24 of the cladding glass, the powdered material is fused to form molten core glass, and the tube is drawn down to form the fibre 21. The powder is preferably introduced in the form of an aggregate. The powder is fused by being heated at least in part using inductive heating, 25, 26. A plasma heating coil 28 and gas feed 29 may also be provided to give an additional plasma flame. The core may be silica with alkali metal ions and stabilizers and the outside tube of fused silica.
GB1340849D 1972-04-06 1972-04-06 Optical fibres Expired GB1340849A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1584172 1972-04-06

Publications (1)

Publication Number Publication Date
GB1340849A true GB1340849A (en) 1973-12-19

Family

ID=10066496

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1340849D Expired GB1340849A (en) 1972-04-06 1972-04-06 Optical fibres

Country Status (2)

Country Link
AU (1) AU474504B2 (en)
GB (1) GB1340849A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3971645A (en) * 1975-09-12 1976-07-27 Bell Telephone Laboratories, Incorporated Method of making compound-glass optical waveguides fabricated by a metal evaporation technique
FR2353495A1 (en) * 1976-06-01 1977-12-30 Int Standard Electric Corp OPTICAL FIBER MANUFACTURING METHOD
US4163654A (en) * 1978-04-21 1979-08-07 Exxon Research & Engineering Co. Method of manufacturing graded index optical fibers
US4277270A (en) * 1978-04-21 1981-07-07 Eotec Corporation Method of manufacture of optical fiber
US4277271A (en) * 1978-04-21 1981-07-07 Eotec Corporation Method of manufacturing graded index optical fibers
US4372767A (en) * 1981-10-19 1983-02-08 Eotec Corporation Method of manufacturing optical fibers
EP0082517A1 (en) * 1981-12-22 1983-06-29 CSELT Centro Studi e Laboratori Telecomunicazioni S.p.A. Apparatus and process for the fabrication of optical fibres
US4848998A (en) * 1988-01-21 1989-07-18 Polaroid Corporation Selective volitization method for preparing fiber optics
EP1199286A1 (en) * 2000-10-18 2002-04-24 The University Of Southampton Optical fibres and preforms incorporating volatile constituents and process for manufacturing the fibre

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3971645A (en) * 1975-09-12 1976-07-27 Bell Telephone Laboratories, Incorporated Method of making compound-glass optical waveguides fabricated by a metal evaporation technique
FR2353495A1 (en) * 1976-06-01 1977-12-30 Int Standard Electric Corp OPTICAL FIBER MANUFACTURING METHOD
US4163654A (en) * 1978-04-21 1979-08-07 Exxon Research & Engineering Co. Method of manufacturing graded index optical fibers
US4277270A (en) * 1978-04-21 1981-07-07 Eotec Corporation Method of manufacture of optical fiber
US4277271A (en) * 1978-04-21 1981-07-07 Eotec Corporation Method of manufacturing graded index optical fibers
US4372767A (en) * 1981-10-19 1983-02-08 Eotec Corporation Method of manufacturing optical fibers
EP0082517A1 (en) * 1981-12-22 1983-06-29 CSELT Centro Studi e Laboratori Telecomunicazioni S.p.A. Apparatus and process for the fabrication of optical fibres
US4848998A (en) * 1988-01-21 1989-07-18 Polaroid Corporation Selective volitization method for preparing fiber optics
EP0326037A2 (en) * 1988-01-21 1989-08-02 Polaroid Corporation Selective volitization method for preparing fiber optics
EP0326037A3 (en) * 1988-01-21 1990-10-31 Polaroid Corporation Selective volitization method for preparing fiber optics
EP1199286A1 (en) * 2000-10-18 2002-04-24 The University Of Southampton Optical fibres and preforms incorporating volatile constituents and process for manufacturing the fibre

Also Published As

Publication number Publication date
AU474504B2 (en) 1976-07-22
AU5408473A (en) 1974-10-10

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Legal Events

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