IT1171475B - Procedimento per la produzione di un materiale di base a forma di bastoncino per fibre ottiche - Google Patents

Procedimento per la produzione di un materiale di base a forma di bastoncino per fibre ottiche

Info

Publication number
IT1171475B
IT1171475B IT49133/81A IT4913381A IT1171475B IT 1171475 B IT1171475 B IT 1171475B IT 49133/81 A IT49133/81 A IT 49133/81A IT 4913381 A IT4913381 A IT 4913381A IT 1171475 B IT1171475 B IT 1171475B
Authority
IT
Italy
Prior art keywords
procedure
production
optical fibers
basic material
stick basic
Prior art date
Application number
IT49133/81A
Other languages
English (en)
Other versions
IT8149133A0 (it
Inventor
Takao Edahiro
Kazuaki Yoshida
Kunio Ogura
Seiji Shibuya
Hiroshi Murata
Original Assignee
Nippon Telegraph & Telephone
Furukawa Electric Co 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 Nippon Telegraph & Telephone, Furukawa Electric Co Ltd filed Critical Nippon Telegraph & Telephone
Publication of IT8149133A0 publication Critical patent/IT8149133A0/it
Application granted granted Critical
Publication of IT1171475B publication Critical patent/IT1171475B/it

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
    • C03B37/012—Manufacture of preforms for drawing fibres or filaments
    • C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
    • C03B37/01413—Reactant delivery systems
    • C03B37/0142—Reactant deposition burners
    • 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
    • C03B37/012—Manufacture of preforms for drawing fibres or filaments
    • C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2203/00—Fibre product details, e.g. structure, shape
    • C03B2203/10—Internal structure or shape details
    • C03B2203/22—Radial profile of refractive index, composition or softening point
    • C03B2203/26—Parabolic or graded index [GRIN] core profile
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2207/00—Glass deposition burners
    • C03B2207/04—Multi-nested ports
    • C03B2207/06—Concentric circular ports
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2207/00—Glass deposition burners
    • C03B2207/04—Multi-nested ports
    • C03B2207/08—Recessed or protruding ports
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2207/00—Glass deposition burners
    • C03B2207/20—Specific substances in specified ports, e.g. all gas flows specified
IT49133/81A 1980-08-22 1981-08-20 Procedimento per la produzione di un materiale di base a forma di bastoncino per fibre ottiche IT1171475B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55115493A JPS591221B2 (ja) 1980-08-22 1980-08-22 光伝送繊維用棒状母材の製造方法

Publications (2)

Publication Number Publication Date
IT8149133A0 IT8149133A0 (it) 1981-08-20
IT1171475B true IT1171475B (it) 1987-06-10

Family

ID=14663871

Family Applications (1)

Application Number Title Priority Date Filing Date
IT49133/81A IT1171475B (it) 1980-08-22 1981-08-20 Procedimento per la produzione di un materiale di base a forma di bastoncino per fibre ottiche

Country Status (9)

Country Link
US (1) US4421539A (it)
JP (1) JPS591221B2 (it)
CA (1) CA1171744A (it)
DE (1) DE3132508A1 (it)
FR (1) FR2488872A1 (it)
GB (1) GB2084989B (it)
IT (1) IT1171475B (it)
NL (1) NL8103898A (it)
SE (1) SE453826B (it)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60167757U (ja) * 1984-04-13 1985-11-07 三笠産業株式会社 容器の開閉装置
DE3521623A1 (de) * 1985-06-15 1986-12-18 Heraeus Quarzschmelze Gmbh, 6450 Hanau Verfahren zum kontinuierlichen aufbau eines im innern traegerfreien, hohlzylindrischen sootkoerpers
US4863501A (en) * 1985-09-26 1989-09-05 Polaroid Corporation, Patent Department Method of employing plasma for finishing start rods
US5028246A (en) * 1986-02-03 1991-07-02 Ensign-Bickford Optical Technologies, Inc. Methods of making optical waveguides
US4812153A (en) * 1987-01-12 1989-03-14 American Telephone And Telegraph Company Method of making a glass body having a graded refractive index profile
US4810276A (en) * 1987-08-05 1989-03-07 Corning Glass Works Forming optical fiber having abrupt index change
US4883522A (en) * 1987-08-19 1989-11-28 Integrated Solar Technologies Corp. Fabrication of macro-gradient optical density transmissive light concentrators, lenses and compound lenses of large geometry
JPH02233369A (ja) * 1990-01-26 1990-09-14 Japan Crown Cork Co Ltd 容器と蓋の組合せ
US5318611A (en) * 1992-03-13 1994-06-07 Ensign-Bickford Optical Technologies, Inc. Methods of making optical waveguides and waveguides made thereby
US20200262735A1 (en) * 2017-08-29 2020-08-20 Sumitomo Electric Industries, Ltd. Method for producing glass particulate deposit, method for producing glass preform, and glass preform

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3823995A (en) * 1972-03-30 1974-07-16 Corning Glass Works Method of forming light focusing fiber waveguide
DE2503598A1 (de) * 1975-01-29 1976-08-05 Siemens Ag Verfahren zur herstellung einer lichtleitfaser
JPS5436951A (en) * 1977-08-29 1979-03-19 Sumitomo Electric Ind Ltd Heat treatment method of glass rod
US4204850A (en) * 1977-08-26 1980-05-27 Corning Glass Works Carbon coating for a starting member used in producing optical waveguide
JPS54106248A (en) * 1978-02-08 1979-08-21 Nippon Telegr & Teleph Corp <Ntt> Production of optical fibers
JPS54112218A (en) * 1978-02-20 1979-09-03 Nippon Telegr & Teleph Corp <Ntt> Production of optical fiber
JPS54116429A (en) * 1978-03-03 1979-09-10 Hitachi Ltd Production of material for optical fiber
GB1574115A (en) * 1978-05-18 1980-09-03 Standard Telephones Cables Ltd Optical fibre manufacture
JPS5924092B2 (ja) * 1978-12-29 1984-06-07 三菱マテリアル株式会社 光フアイバ母材の製造法

Also Published As

Publication number Publication date
IT8149133A0 (it) 1981-08-20
FR2488872A1 (fr) 1982-02-26
JPS591221B2 (ja) 1984-01-11
DE3132508C2 (it) 1992-07-09
NL8103898A (nl) 1982-03-16
GB2084989A (en) 1982-04-21
JPS5742549A (en) 1982-03-10
CA1171744A (en) 1984-07-31
SE8104957L (sv) 1982-02-23
US4421539A (en) 1983-12-20
GB2084989B (en) 1984-05-02
DE3132508A1 (de) 1982-09-23
SE453826B (sv) 1988-03-07
FR2488872B1 (it) 1983-11-10

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970829