JPS5659636A - Manufacture of optical fiber - Google Patents

Manufacture of optical fiber

Info

Publication number
JPS5659636A
JPS5659636A JP13413779A JP13413779A JPS5659636A JP S5659636 A JPS5659636 A JP S5659636A JP 13413779 A JP13413779 A JP 13413779A JP 13413779 A JP13413779 A JP 13413779A JP S5659636 A JPS5659636 A JP S5659636A
Authority
JP
Japan
Prior art keywords
pipe
rod
optical fiber
base material
diameter
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
JP13413779A
Other languages
Japanese (ja)
Inventor
Noriyoshi Shibata
Masao Kawachi
Shoichi Sudo
Shigeki Sakaguchi
Takao Edahiro
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP13413779A priority Critical patent/JPS5659636A/en
Publication of JPS5659636A publication Critical patent/JPS5659636A/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
    • C03B37/01205—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments
    • C03B37/01211—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments by inserting one or more rods or tubes into a tube
    • 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
    • C03B37/02754—Solid fibres drawn from hollow preforms
    • 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
    • C03B37/029—Furnaces therefor
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2205/00—Fibre drawing or extruding details
    • C03B2205/60—Optical fibre draw furnaces
    • C03B2205/62—Heating means for drawing
    • C03B2205/69—Auxiliary thermal treatment immediately prior to drawing, e.g. pre-heaters, laser-assisted resistance heaters

Landscapes

  • Engineering & Computer Science (AREA)
  • 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 obtain an optical fiber with high dimensional accuracy free from deformation by putting a base material rod into a jacket pipe, uniting them to a body at a temp. where the pipe softens and contracts the diameter, and carrying out continuous melting at a higher temp. CONSTITUTION:Base material rod 2 is put into jacket pipe 1. Pipe 1 is introduced into circular heating element 3 such as electric furnace from the sealed end at a fixed speed and heated with element 3 kept at about 1,500-1,600 deg.C, whereby pipe 1 is softened, contracted in the diameter, and united with rod 2. Without passing through a cooling process united pipe 1 and rod 2 are heat melted at about 1,900- 2,100 deg.C with circular heating element 4 placed near element 3, and the melt is drawn into a fine optical fiber. Thus, rod 2 is prevented from being deformed and moved, so the resulting core is not deformed elliptic.
JP13413779A 1979-10-19 1979-10-19 Manufacture of optical fiber Pending JPS5659636A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13413779A JPS5659636A (en) 1979-10-19 1979-10-19 Manufacture of optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13413779A JPS5659636A (en) 1979-10-19 1979-10-19 Manufacture of optical fiber

Publications (1)

Publication Number Publication Date
JPS5659636A true JPS5659636A (en) 1981-05-23

Family

ID=15121329

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13413779A Pending JPS5659636A (en) 1979-10-19 1979-10-19 Manufacture of optical fiber

Country Status (1)

Country Link
JP (1) JPS5659636A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6221726A (en) * 1985-07-19 1987-01-30 Hitachi Cable Ltd Production of single mode optical fiber

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6221726A (en) * 1985-07-19 1987-01-30 Hitachi Cable Ltd Production of single mode optical fiber

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