JPS5650137A - Manufacture of optical fiber base material - Google Patents

Manufacture of optical fiber base material

Info

Publication number
JPS5650137A
JPS5650137A JP12368079A JP12368079A JPS5650137A JP S5650137 A JPS5650137 A JP S5650137A JP 12368079 A JP12368079 A JP 12368079A JP 12368079 A JP12368079 A JP 12368079A JP S5650137 A JPS5650137 A JP S5650137A
Authority
JP
Japan
Prior art keywords
rod
optical fiber
central part
base material
obtd
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
JP12368079A
Other languages
Japanese (ja)
Other versions
JPS5737539B2 (en
Inventor
Motohiro Nakahara
Kazuo Sanada
Koichi Inada
Takeru Fukuda
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 JP12368079A priority Critical patent/JPS5650137A/en
Publication of JPS5650137A publication Critical patent/JPS5650137A/en
Publication of JPS5737539B2 publication Critical patent/JPS5737539B2/ja
Granted 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

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 form easily and surely an optical fiber base material having a refractive index provile of almost square distribution type by removing an acutely rising higher refractive index central part of a transparent glass rod obtd. by a vapor phase axial sticking method. CONSTITUTION:A porous glass preform manufactured by a vapor phase axial sticking method is heated to form transparent glass rod 1. Rod 1 is put into carbon jig 3a with hole 2 bored, and while keeping jig 3a at about 1,500-1,600 deg.C a central part of rod 1 is pressed with plunger 4 to remove central part A by punching. Hollow pipe 1b thus obtd. is washed by hydrofluoric acid washing or other means, and it is made solid by collapsing to form solid rod 1c. Rod 1c is then drawn, melt- stuck to a quartz pipe jacket by heating, and spun into an optical fiber.
JP12368079A 1979-09-26 1979-09-26 Manufacture of optical fiber base material Granted JPS5650137A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12368079A JPS5650137A (en) 1979-09-26 1979-09-26 Manufacture of optical fiber base material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12368079A JPS5650137A (en) 1979-09-26 1979-09-26 Manufacture of optical fiber base material

Publications (2)

Publication Number Publication Date
JPS5650137A true JPS5650137A (en) 1981-05-07
JPS5737539B2 JPS5737539B2 (en) 1982-08-10

Family

ID=14866641

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12368079A Granted JPS5650137A (en) 1979-09-26 1979-09-26 Manufacture of optical fiber base material

Country Status (1)

Country Link
JP (1) JPS5650137A (en)

Also Published As

Publication number Publication date
JPS5737539B2 (en) 1982-08-10

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