JPS5738335A - Manufacture of clad glass pipe for optical fiber transmitting infrared ray - Google Patents

Manufacture of clad glass pipe for optical fiber transmitting infrared ray

Info

Publication number
JPS5738335A
JPS5738335A JP10926080A JP10926080A JPS5738335A JP S5738335 A JPS5738335 A JP S5738335A JP 10926080 A JP10926080 A JP 10926080A JP 10926080 A JP10926080 A JP 10926080A JP S5738335 A JPS5738335 A JP S5738335A
Authority
JP
Japan
Prior art keywords
glass
pipe
mold
glass pipe
temp
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
JP10926080A
Other languages
Japanese (ja)
Inventor
Nariyuki Mitachi
Toyotaka Manabe
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.)
NTT Inc
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 JP10926080A priority Critical patent/JPS5738335A/en
Publication of JPS5738335A publication Critical patent/JPS5738335A/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
    • C03B37/01268—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 casting
    • 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

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)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)

Abstract

PURPOSE:To obtain a clad glass pipe for an optical fiber transmitting infrared rays by fixing a quartz glass pipe to the outer frame of a metallic mold splittable into a plurality of segments and having a cylindrical hollow part, pouring molten fluoride glass in the gap between the frame and the pipe, and slowly cooling the glass after annealing. CONSTITUTION:A thin-walled glass pipe 7 with a high m.p. is fixed at the central axial part of a mold having outer frames 1, 1' splittable into a plurality of segments and forming a cylindrical hollow part 4, and after preheating the mold to a temp. close to the transition temp. of fluoride glass, molten fluoride glass is poured in the gap between the pipe 7 and the frames 1, 1'. The mold is then kept at a temp. several-several 10 deg.C below the transition temp. of the fluoride glass to anneal the glass, and it is slowly cooled. After the cooling the frames 1, 1' are detached to take out the fluoride glass formed in the interior. The internal thin-walled glass pipe 7 is scraped away.
JP10926080A 1980-08-11 1980-08-11 Manufacture of clad glass pipe for optical fiber transmitting infrared ray Pending JPS5738335A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10926080A JPS5738335A (en) 1980-08-11 1980-08-11 Manufacture of clad glass pipe for optical fiber transmitting infrared ray

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10926080A JPS5738335A (en) 1980-08-11 1980-08-11 Manufacture of clad glass pipe for optical fiber transmitting infrared ray

Publications (1)

Publication Number Publication Date
JPS5738335A true JPS5738335A (en) 1982-03-03

Family

ID=14505660

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10926080A Pending JPS5738335A (en) 1980-08-11 1980-08-11 Manufacture of clad glass pipe for optical fiber transmitting infrared ray

Country Status (1)

Country Link
JP (1) JPS5738335A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63123826A (en) * 1986-11-11 1988-05-27 Sumitomo Electric Ind Ltd Production of preform for fluoride glass
CN102079623A (en) * 2010-11-12 2011-06-01 江苏通鼎光电股份有限公司 Optical fiber annealing extension tube used for high-speed drawing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63123826A (en) * 1986-11-11 1988-05-27 Sumitomo Electric Ind Ltd Production of preform for fluoride glass
CN102079623A (en) * 2010-11-12 2011-06-01 江苏通鼎光电股份有限公司 Optical fiber annealing extension tube used for high-speed drawing

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