GB8421485D0 - Optical fibres - Google Patents

Optical fibres

Info

Publication number
GB8421485D0
GB8421485D0 GB848421485A GB8421485A GB8421485D0 GB 8421485 D0 GB8421485 D0 GB 8421485D0 GB 848421485 A GB848421485 A GB 848421485A GB 8421485 A GB8421485 A GB 8421485A GB 8421485 D0 GB8421485 D0 GB 8421485D0
Authority
GB
United Kingdom
Prior art keywords
optical fibres
fibres
optical
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
GB848421485A
Other versions
GB2145840A (en
GB2145840B (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.)
Balfour Beatty PLC
Original Assignee
BICC 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 BICC PLC filed Critical BICC PLC
Publication of GB8421485D0 publication Critical patent/GB8421485D0/en
Publication of GB2145840A publication Critical patent/GB2145840A/en
Application granted granted Critical
Publication of GB2145840B publication Critical patent/GB2145840B/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
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
    • G02B6/03694—Multiple layers differing in properties other than the refractive index, e.g. attenuation, diffusion, stress properties
    • 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
    • C03C13/00—Fibre or filament compositions
    • C03C13/04—Fibre optics, e.g. core and clad fibre compositions
    • C03C13/045—Silica-containing oxide glass compositions
    • 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
    • G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
    • G02B6/03616—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference
    • G02B6/03622—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 2 layers only
    • 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
    • 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
    • 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
    • G02B6/44382—Means specially adapted for strengthening or protecting the cables the means comprising hydrogen absorbing materials
GB08421485A 1983-08-26 1984-08-24 Optical fibres Expired GB2145840B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB838323056A GB8323056D0 (en) 1983-08-26 1983-08-26 Optical fibres

Publications (3)

Publication Number Publication Date
GB8421485D0 true GB8421485D0 (en) 1984-09-26
GB2145840A GB2145840A (en) 1985-04-03
GB2145840B GB2145840B (en) 1986-11-19

Family

ID=10547939

Family Applications (2)

Application Number Title Priority Date Filing Date
GB838323056A Pending GB8323056D0 (en) 1983-08-26 1983-08-26 Optical fibres
GB08421485A Expired GB2145840B (en) 1983-08-26 1984-08-24 Optical fibres

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB838323056A Pending GB8323056D0 (en) 1983-08-26 1983-08-26 Optical fibres

Country Status (1)

Country Link
GB (2) GB8323056D0 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3510023A1 (en) * 1985-03-20 1986-09-25 Licentia Gmbh SINGLE WAVE LIGHT WAVE GUIDE MADE OF QUARTZ GLASS AND METHOD FOR THE PRODUCTION THEREOF
US4877306A (en) * 1987-09-30 1989-10-31 Corning Glass Works Coated optical waveguide fibers
DE19505929C1 (en) * 1995-02-21 1996-03-28 Heraeus Quarzglas Low attenuation optical component e.g.. fibre or preform
FR2792733B1 (en) 1999-04-26 2002-01-11 Cit Alcatel PREFORM COMPRISING A BARRIER COATING AGAINST HYDROGEN DIFFUSION IN THE OPTICAL FIBER MANUFACTURED FROM THIS PREFORM AND PROCESS FOR PREPARING SUCH A PREFORM
FR2809720B1 (en) * 2000-06-05 2003-03-28 Cit Alcatel PREFORMS AND OPTICAL FIBERS COATED WITH ALUMINA AND / OR SILICA

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1113229A (en) * 1966-02-10 1968-05-08 Corning Glass Works Fiber optical bundle
GB1602052A (en) * 1977-06-20 1981-11-04 Int Standard Electric Corp Optical fibre manufacture
ATE7381T1 (en) * 1979-04-10 1984-05-15 The Post Office GRADIENT INDEX OPTIC FIBER.
GB2067781B (en) * 1979-10-29 1983-09-01 Standard Telephones Cables Ltd Optical fibres
US4339174A (en) * 1980-02-01 1982-07-13 Corning Glass Works High bandwidth optical waveguide
NL8103089A (en) * 1981-06-26 1983-01-17 Philips Nv OPTICAL FIBER OF THE GRADED INDEX TYPE AND METHOD FOR THE MANUFACTURE THEREOF
JPS6014321B2 (en) * 1981-08-18 1985-04-12 日立電線株式会社 Constant polarization optical fiber
US4504113A (en) * 1981-11-02 1985-03-12 Schlumberger Technology Corporation Reinforced and chemically resistant optical filament

Also Published As

Publication number Publication date
GB8323056D0 (en) 1983-09-28
GB2145840A (en) 1985-04-03
GB2145840B (en) 1986-11-19

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Legal Events

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