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JPS645925A - Production of preform for optical fiber - Google Patents

Production of preform for optical fiber

Info

Publication number
JPS645925A
JPS645925A JP16086287A JP16086287A JPS645925A JP S645925 A JPS645925 A JP S645925A JP 16086287 A JP16086287 A JP 16086287A JP 16086287 A JP16086287 A JP 16086287A JP S645925 A JPS645925 A JP S645925A
Authority
JP
Japan
Prior art keywords
glass
fine particles
preform
deposited
optical fiber
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
JP16086287A
Other languages
Japanese (ja)
Other versions
JPH0818843B2 (en
Inventor
Toshio Danzuka
Hiroshi Yokota
Masumi Ito
Masahiro Takagi
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.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries 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 Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP16086287A priority Critical patent/JPH0818843B2/en
Publication of JPS645925A publication Critical patent/JPS645925A/en
Publication of JPH0818843B2 publication Critical patent/JPH0818843B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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]
    • C03B37/01413—Reactant delivery systems
    • C03B37/0142—Reactant deposition burners
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2207/00—Glass deposition burners
    • C03B2207/36—Fuel or oxidant details, e.g. flow rate, flow rate ratio, fuel additives

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)

Abstract

PURPOSE:To enhance the quality of a preform by previously forming the thin layer of a deposited material consisting of the fine particles of glass on the outer circumference of the glass rod of a starting material under the specified conditions and thereafter depositing the fine particles of glass on the outer circumference of this thin layer in the case of producing the preform for optical fiber with a VAD method or the like. CONSTITUTION:The fine particles of glass produced by introducing both gaseous raw material of glass and combustion gas into a burner 2 for synthesizing the fine particles of glass are deposited on the outer circumferential part of a glass rod 1 of a starting material which is made to one part of a preform for optical fiber and thereby a deposited material 4 consisting of the fine particles of glass is synthesized and the preform for optical fiber is produced by dehydrating this deposited material 4 and sintering it and making it transparent. In this case, such a process is provided that a thin deposited material 41 consisting of the fine particles of glass is firstly formed on the outer circumference of the glass rod 1 and a composite 21 consisting of the glass rod 1 and the thin layer of the deposited material 41 is formed. In this process, the molar ratio of Si contained in the raw material of glass jetted through the burner 2 for synthesizing the fine particles of glass and hydrogen atom contained in fuel is regulated to (1:4)-(1:15). Successively furthermore the fine particles of glass are deposited on the outer circumference of the composite 21.
JP16086287A 1987-06-30 1987-06-30 Method for manufacturing preform for optical fiber Expired - Fee Related JPH0818843B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16086287A JPH0818843B2 (en) 1987-06-30 1987-06-30 Method for manufacturing preform for optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16086287A JPH0818843B2 (en) 1987-06-30 1987-06-30 Method for manufacturing preform for optical fiber

Publications (2)

Publication Number Publication Date
JPS645925A true JPS645925A (en) 1989-01-10
JPH0818843B2 JPH0818843B2 (en) 1996-02-28

Family

ID=15723984

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16086287A Expired - Fee Related JPH0818843B2 (en) 1987-06-30 1987-06-30 Method for manufacturing preform for optical fiber

Country Status (1)

Country Link
JP (1) JPH0818843B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0347520A (en) * 1989-03-02 1991-02-28 Takeshi Nitami Liquid-gas separator
JPH0679259A (en) * 1989-03-02 1994-03-22 Takeshi Nitami Method for removing oxygen from service water
JPH08206408A (en) * 1989-03-02 1996-08-13 Takeshi Nitami Gas-liquid separator
US5702495A (en) * 1993-02-10 1997-12-30 Nikon Corporation Silica glass member for UV-lithography, method for silica glass production, and method for silica glass member production

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0347520A (en) * 1989-03-02 1991-02-28 Takeshi Nitami Liquid-gas separator
JPH0679259A (en) * 1989-03-02 1994-03-22 Takeshi Nitami Method for removing oxygen from service water
JPH08206408A (en) * 1989-03-02 1996-08-13 Takeshi Nitami Gas-liquid separator
US5702495A (en) * 1993-02-10 1997-12-30 Nikon Corporation Silica glass member for UV-lithography, method for silica glass production, and method for silica glass member production

Also Published As

Publication number Publication date
JPH0818843B2 (en) 1996-02-28

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees