FR2389147A1 - OPTICAL FIBER COATED WITH SILICON NITRIDE - Google Patents

OPTICAL FIBER COATED WITH SILICON NITRIDE

Info

Publication number
FR2389147A1
FR2389147A1 FR7812277A FR7812277A FR2389147A1 FR 2389147 A1 FR2389147 A1 FR 2389147A1 FR 7812277 A FR7812277 A FR 7812277A FR 7812277 A FR7812277 A FR 7812277A FR 2389147 A1 FR2389147 A1 FR 2389147A1
Authority
FR
France
Prior art keywords
silicon nitride
optical fiber
fiber coated
mechanical strength
covered
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.)
Withdrawn
Application number
FR7812277A
Other languages
French (fr)
Inventor
Charles Kuen Kao
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of FR2389147A1 publication Critical patent/FR2389147A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
    • C03C25/10—Coating
    • C03C25/104—Coating to obtain optical fibres
    • 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
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/02395—Glass optical fibre with a protective coating, e.g. two layer polymer coating deposited directly on a silica cladding surface during fibre manufacture

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Surface Treatment Of Glass Fibres Or Filaments (AREA)

Abstract

La présente invention concerne la protection des fibres optiques contre les effets de l'humidité sur leur résistance mecanique. Une fibre optique en verre 10 comporte un coeur 11 constitué essentiellement de silice dopée recouverte d'une couche 12 elle-même en silice dopée et revêtue d'une troisième couche externe 13 en nitrure de silicium imperméable à l'eau. Cette dernière couche peut éventuellement être recouverte d'une gaine plastique 14 améliorant la résistance mécanique de l'ensemble. L'invention trouve son application, par exemple, dans les installations de télécommunications par guides d'ondes optiques en milieu humide.The present invention relates to the protection of optical fibers against the effects of humidity on their mechanical strength. A glass optical fiber 10 comprises a core 11 consisting essentially of doped silica covered with a layer 12 itself of doped silica and coated with a third outer layer 13 of water-impermeable silicon nitride. This last layer can optionally be covered with a plastic sheath 14 improving the mechanical strength of the assembly. The invention finds its application, for example, in telecommunications installations using optical waveguides in a humid environment.

FR7812277A 1977-04-29 1978-04-26 OPTICAL FIBER COATED WITH SILICON NITRIDE Withdrawn FR2389147A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US79242977A 1977-04-29 1977-04-29

Publications (1)

Publication Number Publication Date
FR2389147A1 true FR2389147A1 (en) 1978-11-24

Family

ID=25156860

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7812277A Withdrawn FR2389147A1 (en) 1977-04-29 1978-04-26 OPTICAL FIBER COATED WITH SILICON NITRIDE

Country Status (5)

Country Link
AU (1) AU3539878A (en)
DE (1) DE2818036A1 (en)
FR (1) FR2389147A1 (en)
GB (1) GB1592234A (en)
NL (1) NL7804449A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2425411A1 (en) * 1978-05-12 1979-12-07 Fujitsu Ltd METHOD OF MANUFACTURING AN OPTICAL FIBER
EP0095729A2 (en) * 1982-05-28 1983-12-07 International Standard Electric Corporation Hermetic coating by heterogeneous nucleation thermochemical deposition
EP0163401A2 (en) * 1984-05-22 1985-12-04 Stc Plc Cables
US4696543A (en) * 1984-05-22 1987-09-29 Standard Telephone And Cables, Plc Optical fiber cable having a low permeability to hydrogen

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4319803A (en) * 1978-11-24 1982-03-16 Hewlett-Packard Company Optical fiber coating
US4306897A (en) * 1980-04-16 1981-12-22 International Telephone And Telegraph Corporation Method of fabricating fatigue resistant optical fibers
DE3035879A1 (en) * 1980-09-23 1982-04-29 Siemens AG, 1000 Berlin und 8000 München Core and sheath glass optical fibre of lead glass - of specified size is made simply and cheaply and has required damping, coupling and strength
IT1167852B (en) * 1981-03-24 1987-05-20 Stefano Sottini HIGH POWER LASER RADIATION TRANSMISSION DEVICE USING A VARIABLE SECTION OPTICAL FIBER AND ITS REALIZATION PROCEDURE
GB2151369A (en) * 1983-10-24 1985-07-17 British Telecomm Optical fibres
GB2164934B (en) * 1984-09-29 1988-10-05 Stc Plc Optical fibres

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2425411A1 (en) * 1978-05-12 1979-12-07 Fujitsu Ltd METHOD OF MANUFACTURING AN OPTICAL FIBER
EP0095729A2 (en) * 1982-05-28 1983-12-07 International Standard Electric Corporation Hermetic coating by heterogeneous nucleation thermochemical deposition
EP0095729A3 (en) * 1982-05-28 1984-04-04 International Standard Electric Corporation Hermetic coating by heterogeneous nucleation thermochemical deposition
EP0163401A2 (en) * 1984-05-22 1985-12-04 Stc Plc Cables
EP0163401A3 (en) * 1984-05-22 1986-03-12 Stc Plc Cables
US4696543A (en) * 1984-05-22 1987-09-29 Standard Telephone And Cables, Plc Optical fiber cable having a low permeability to hydrogen

Also Published As

Publication number Publication date
NL7804449A (en) 1978-10-31
GB1592234A (en) 1981-07-01
AU3539878A (en) 1979-11-01
DE2818036A1 (en) 1978-11-09

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Legal Events

Date Code Title Description
ST Notification of lapse