GB2020057A - Optical fiber having inorganic crystal core - Google Patents

Optical fiber having inorganic crystal core

Info

Publication number
GB2020057A
GB2020057A GB7914760A GB7914760A GB2020057A GB 2020057 A GB2020057 A GB 2020057A GB 7914760 A GB7914760 A GB 7914760A GB 7914760 A GB7914760 A GB 7914760A GB 2020057 A GB2020057 A GB 2020057A
Authority
GB
United Kingdom
Prior art keywords
inorganic crystal
optical fiber
sio2
glass
cladding
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
GB7914760A
Other versions
GB2020057B (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.)
KDDI Corp
Original Assignee
Kokusai Denshin Denwa KK
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 Kokusai Denshin Denwa KK filed Critical Kokusai Denshin Denwa KK
Publication of GB2020057A publication Critical patent/GB2020057A/en
Application granted granted Critical
Publication of GB2020057B publication Critical patent/GB2020057B/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
    • 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
    • C03B37/022—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from molten glass in which the resultant product consists of different sorts of glass or is characterised by shape, e.g. hollow fibres, undulated fibres, fibres presenting a rough surface
    • C03B37/023—Fibres composed of different sorts of glass, e.g. glass optical fibres, made by the double crucible technique
    • 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
    • C03C13/008—Polycrystalline 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
    • G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
    • G02B6/102—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type for infrared and ultraviolet radiation
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2201/00—Type of glass produced
    • C03B2201/80—Non-oxide glasses or glass-type compositions
    • C03B2201/82—Fluoride glasses, e.g. ZBLAN glass
    • C03B2201/83—Ionic or single crystal type, e.g. NaF, LiF, CaF2
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2201/00—Type of glass produced
    • C03B2201/80—Non-oxide glasses or glass-type compositions
    • C03B2201/84—Halide glasses other than fluoride glasses, i.e. Cl, Br or I glasses, e.g. AgCl-AgBr "glass"

Abstract

An optical fiber comprises a cladding formed of a highly viscous and drawable material, and a core formed of an inorganic crystal material having a larger refractive index and lower melting point than the cladding material and transparent in at least a part of a wavelength region including the near infrared and infrared regions. The cladding may be SiO2 glass, SiO2-B2O3 glass or SiO2-P2O5 glass. The inorganic crystal material may be LiF, CaF2, BaF2, Nace, Kce, KBr, NaF, KI, CsBr, CsI, TICl, TiBr or Ge.
GB7914760A 1978-04-28 1979-04-27 Optical fibre having inorganic crystal core Expired GB2020057B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5127478A JPS54143242A (en) 1978-04-28 1978-04-28 Optical fiber

Publications (2)

Publication Number Publication Date
GB2020057A true GB2020057A (en) 1979-11-07
GB2020057B GB2020057B (en) 1982-08-18

Family

ID=12882359

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7914760A Expired GB2020057B (en) 1978-04-28 1979-04-27 Optical fibre having inorganic crystal core

Country Status (3)

Country Link
JP (1) JPS54143242A (en)
FR (1) FR2424552A1 (en)
GB (1) GB2020057B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118320A (en) * 1982-04-09 1983-10-26 Western Electric Co Doped optical fiber
US4874222A (en) * 1986-03-31 1989-10-17 Spectran Corporation Hermetic coatings for non-silica based optical fibers
DE4329807A1 (en) * 1993-09-03 1995-03-09 Joerg Dipl Ing Drewes Glazed annexe for a building
US5609665A (en) * 1995-08-31 1997-03-11 Lucent Technologies Inc. Method of making optical fiber with low melting glass core
US8934748B2 (en) 2008-02-29 2015-01-13 Northrop Grumman Systems Corporation Optical fiber systems and methods
CN114180831A (en) * 2021-12-29 2022-03-15 中国建筑材料科学研究总院有限公司 Photoetching glass and microstructure processing method thereof

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54149652A (en) * 1978-05-16 1979-11-24 Sumitomo Electric Ind Ltd Optical transmission path
JPS56132301A (en) * 1980-03-21 1981-10-16 Fujikura Ltd Optical fiber
GB2092771B (en) 1981-02-11 1984-06-20 Standard Telephones Cables Ltd Optical fibres with graded index crystalline core
US4552434A (en) * 1982-03-16 1985-11-12 Sumitomo Electric Industries, Ltd. Crystalline infrared optical fiber with a small gap and a process for the production of same
US4532000A (en) * 1983-09-28 1985-07-30 Hughes Aircraft Company Fabrication of single crystal fibers from congruently melting polycrystalline fibers
US5236360A (en) * 1992-07-23 1993-08-17 Laser Medical Technology, Inc. Optical members for laser transmission
JP5895533B2 (en) * 2011-12-28 2016-03-30 株式会社豊田中央研究所 Functional optical fiber and manufacturing method thereof

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3209641A (en) * 1960-02-15 1965-10-05 American Optical Corp Infra-red transmitting fibers formed of arsenic and sulphur
DE2821642B2 (en) * 1977-05-24 1980-02-07 Hughes Aircraft Co., Culver City, Calif. (V.St.A.) Fiber optic waveguides and process for their manufacture
US4170997A (en) * 1977-08-26 1979-10-16 Hughes Aircraft Company Medical laser instrument for transmitting infrared laser energy to a selected part of the body
JPS54124746A (en) * 1978-03-20 1979-09-27 Kokusai Denshin Denwa Co Ltd Fiber for optical transmission

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118320A (en) * 1982-04-09 1983-10-26 Western Electric Co Doped optical fiber
US4874222A (en) * 1986-03-31 1989-10-17 Spectran Corporation Hermetic coatings for non-silica based optical fibers
DE4329807A1 (en) * 1993-09-03 1995-03-09 Joerg Dipl Ing Drewes Glazed annexe for a building
US5609665A (en) * 1995-08-31 1997-03-11 Lucent Technologies Inc. Method of making optical fiber with low melting glass core
EP0761616A2 (en) * 1995-08-31 1997-03-12 AT&T Corp. Method of making optical fiber with low melting glass core
EP0761616A3 (en) * 1995-08-31 1997-03-26 AT&T Corp. Method of making optical fiber with low melting glass core
US8934748B2 (en) 2008-02-29 2015-01-13 Northrop Grumman Systems Corporation Optical fiber systems and methods
DE112009000467B4 (en) 2008-02-29 2023-03-30 Clemson University Light guide systems and methods
CN114180831A (en) * 2021-12-29 2022-03-15 中国建筑材料科学研究总院有限公司 Photoetching glass and microstructure processing method thereof
CN114180831B (en) * 2021-12-29 2024-04-02 中国建筑材料科学研究总院有限公司 Photoetching glass and microstructure processing method thereof

Also Published As

Publication number Publication date
FR2424552A1 (en) 1979-11-23
GB2020057B (en) 1982-08-18
JPS54143242A (en) 1979-11-08
FR2424552B1 (en) 1984-01-27

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Legal Events

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