JPS56109833A - Manufacture of base material for optical fiber - Google Patents

Manufacture of base material for optical fiber

Info

Publication number
JPS56109833A
JPS56109833A JP975680A JP975680A JPS56109833A JP S56109833 A JPS56109833 A JP S56109833A JP 975680 A JP975680 A JP 975680A JP 975680 A JP975680 A JP 975680A JP S56109833 A JPS56109833 A JP S56109833A
Authority
JP
Japan
Prior art keywords
base material
preform
optical fiber
manufacture
heating
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
JP975680A
Other languages
Japanese (ja)
Other versions
JPS5924743B2 (en
Inventor
Takao Edahiro
Kazuo Sanada
Koichi Inada
Takeru Fukuda
Takashi Moriyama
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.)
Fujikura Ltd
Nippon Telegraph and Telephone Corp
Original Assignee
Fujikura Ltd
Nippon Telegraph and Telephone 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 Fujikura Ltd, Nippon Telegraph and Telephone Corp filed Critical Fujikura Ltd
Priority to JP975680A priority Critical patent/JPS5924743B2/en
Publication of JPS56109833A publication Critical patent/JPS56109833A/en
Publication of JPS5924743B2 publication Critical patent/JPS5924743B2/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
    • C03B37/012—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]
    • C03B37/01446—Thermal after-treatment of preforms, e.g. dehydrating, consolidating, sintering
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2201/00—Type of glass produced
    • C03B2201/06—Doped silica-based glasses
    • C03B2201/30—Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi
    • C03B2201/31—Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi doped with germanium

Abstract

PURPOSE:To prevent the occurrence of a gap along the boundary of a base material for an optical fiber through preventing the bubbling due to GeO2 and GeO in the manufacture of the base material by a VAD method, by heat treating a porous glass preform in gaseous H2 atmosphere or a vacuum. CONSTITUTION:Porous glass preform 1a is formed at the lower part of rodlike substrate 1 by a VAD method. It is set in heating apparatus 6 lined with quartz tube 3 and heat treated in gaseous H2 atmosphere or a vacuum. Thus, free GeO2 and GeO existing in the vicinity of the surface of preform 1a are removed by evaporation to form an SiO2-rich layer on the outside of preform 1a. Preform 1a is then converted into transparent glass by heating and drawn to form drawn rod. The resulting drawn rod is covered with a quartz jacket and melt stuck to it by heating to manufacture a base material for an optical fiber. Using this base material an optical fiber with less optical transmission loss is obtd.
JP975680A 1980-01-30 1980-01-30 Manufacturing method of optical fiber base material Expired JPS5924743B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP975680A JPS5924743B2 (en) 1980-01-30 1980-01-30 Manufacturing method of optical fiber base material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP975680A JPS5924743B2 (en) 1980-01-30 1980-01-30 Manufacturing method of optical fiber base material

Publications (2)

Publication Number Publication Date
JPS56109833A true JPS56109833A (en) 1981-08-31
JPS5924743B2 JPS5924743B2 (en) 1984-06-12

Family

ID=11729122

Family Applications (1)

Application Number Title Priority Date Filing Date
JP975680A Expired JPS5924743B2 (en) 1980-01-30 1980-01-30 Manufacturing method of optical fiber base material

Country Status (1)

Country Link
JP (1) JPS5924743B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59217640A (en) * 1983-05-26 1984-12-07 Fujikura Ltd Manufacture of optical fiber
JPS63201025A (en) * 1987-02-17 1988-08-19 Sumitomo Electric Ind Ltd Production of high-purity transparent glass
JPH0388742A (en) * 1989-06-09 1991-04-15 Shinetsu Sekiei Kk Synthetic silica glass optical body and production therefor
US5236482A (en) * 1991-02-08 1993-08-17 Sumitomo Electric Industries, Ltd. Method for producing glass preform for optical fiber

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59217640A (en) * 1983-05-26 1984-12-07 Fujikura Ltd Manufacture of optical fiber
JPS63201025A (en) * 1987-02-17 1988-08-19 Sumitomo Electric Ind Ltd Production of high-purity transparent glass
JPH0388742A (en) * 1989-06-09 1991-04-15 Shinetsu Sekiei Kk Synthetic silica glass optical body and production therefor
US5236482A (en) * 1991-02-08 1993-08-17 Sumitomo Electric Industries, Ltd. Method for producing glass preform for optical fiber

Also Published As

Publication number Publication date
JPS5924743B2 (en) 1984-06-12

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