JPS6469535A - Apparatus for producing preform for fluoride glass optical fiber - Google Patents

Apparatus for producing preform for fluoride glass optical fiber

Info

Publication number
JPS6469535A
JPS6469535A JP22547687A JP22547687A JPS6469535A JP S6469535 A JPS6469535 A JP S6469535A JP 22547687 A JP22547687 A JP 22547687A JP 22547687 A JP22547687 A JP 22547687A JP S6469535 A JPS6469535 A JP S6469535A
Authority
JP
Japan
Prior art keywords
preform
optical fiber
nozzle
fluoride glass
pulling
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.)
Pending
Application number
JP22547687A
Other languages
Japanese (ja)
Inventor
Shigeru Hirai
Yoshiki Chigusa
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 JP22547687A priority Critical patent/JPS6469535A/en
Publication of JPS6469535A publication Critical patent/JPS6469535A/en
Pending 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
    • C03B37/01265—Manufacture of preforms for drawing fibres or filaments starting entirely or partially from molten glass, e.g. by dipping a preform in a melt
    • C03B37/01274—Manufacture of preforms for drawing fibres or filaments starting entirely or partially from molten glass, e.g. by dipping a preform in a melt by extrusion or drawing
    • 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
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2205/00—Fibre drawing or extruding details
    • C03B2205/02—Upward drawing

Abstract

PURPOSE:To obtain a large-sized preform in a state without fluctuation in composition, by adopting a constitution for pressurizing and controlling a glass melt so as to provide a constant pulling up speed in pulling up a preform upward from a nozzle of a crucible and forming the melt. CONSTITUTION:An apparatus for producing a preform for fluoride glass optical fiber provided with a crucible 1, having an upwardly opened nozzle 2 to be a taking outlet of the preform for the optical fiber and filled with a fluoride glass melt (A) therein; a heating means 8 for heating the fluoride glass melt (A) so as to keep a molten state; a pulling up rod 6, placed so as to face the nozzle 2 of the nozzle 1 and continuously pulling up the preform for the optical fiber while upwardly moving; a cooling means 9 for quenching the fluoride glass melt (A) near the nozzle 2 of the crucible 1 and growing the preform for the optical fiber on the pulling up rod 6 and a pressurizing means 3 for pressurizing and controlling the fluoride glass melt (A) so as to provide a constant pulling up speed of the preform for the optical fiber to be pulled up from the nozzle 2 of the crucible 1.
JP22547687A 1987-09-09 1987-09-09 Apparatus for producing preform for fluoride glass optical fiber Pending JPS6469535A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22547687A JPS6469535A (en) 1987-09-09 1987-09-09 Apparatus for producing preform for fluoride glass optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22547687A JPS6469535A (en) 1987-09-09 1987-09-09 Apparatus for producing preform for fluoride glass optical fiber

Publications (1)

Publication Number Publication Date
JPS6469535A true JPS6469535A (en) 1989-03-15

Family

ID=16829914

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22547687A Pending JPS6469535A (en) 1987-09-09 1987-09-09 Apparatus for producing preform for fluoride glass optical fiber

Country Status (1)

Country Link
JP (1) JPS6469535A (en)

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