JPS57201203A - Production of optical fiber - Google Patents

Production of optical fiber

Info

Publication number
JPS57201203A
JPS57201203A JP56085620A JP8562081A JPS57201203A JP S57201203 A JPS57201203 A JP S57201203A JP 56085620 A JP56085620 A JP 56085620A JP 8562081 A JP8562081 A JP 8562081A JP S57201203 A JPS57201203 A JP S57201203A
Authority
JP
Japan
Prior art keywords
fiber
crucible
optical fiber
glass
crystalline body
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
JP56085620A
Other languages
Japanese (ja)
Inventor
Hidefumi Mori
Masahiro Ikeda
Satoru Oku
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 JP56085620A priority Critical patent/JPS57201203A/en
Publication of JPS57201203A publication Critical patent/JPS57201203A/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
    • C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
    • C03B37/022—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from molten glass in which the resultant product consists of different sorts of glass or is characterised by shape, e.g. hollow fibres, undulated fibres, fibres presenting a rough surface
    • C03B37/023—Fibres composed of different sorts of glass, e.g. glass optical fibres, made by the double crucible technique
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2201/00—Type of glass produced
    • C03B2201/02—Pure silica glass, e.g. pure fused quartz
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2201/00—Type of glass produced
    • C03B2201/06—Doped silica-based glasses
    • 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
    • C03B2201/84—Halide glasses other than fluoride glasses, i.e. Cl, Br or I glasses, e.g. AgCl-AgBr "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)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)

Abstract

PURPOSE:To obtain a crystalline optical fiber which transmits light with a low loss by putting a crystalline body consisting of a halogen compd. in an inner crucible, putting glass into an outer crucible, heating these to melt, drawing a fiber and annealing the fiber. CONSTITUTION:In a double crucible method, a crystalline body of NaCl mixed with 20mol% AgCl as a halogen compd. is put in an inner crucible 1. Glass 2 consisting essentially of SiO2 is put in an outer crucible 3, and the entire part of the crucibles is heated to 950 deg.C in an electric furnace, whereby these are melted. A fiber is drawn through the hole in the lower part of the crucible, whereby an optical fiber 4 consisting of a core of the crystalline body 1 and a clad of the glass 2 is obtained. This fiber 4 is put in an another electric furnace where it is heated to 720 deg.C and is annealed to reduce temp. The graded type optical fiber wherein the refractive index of the fiber 4 decreases continuously from the center of the core toward the outer side is formed.
JP56085620A 1981-06-05 1981-06-05 Production of optical fiber Pending JPS57201203A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56085620A JPS57201203A (en) 1981-06-05 1981-06-05 Production of optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56085620A JPS57201203A (en) 1981-06-05 1981-06-05 Production of optical fiber

Publications (1)

Publication Number Publication Date
JPS57201203A true JPS57201203A (en) 1982-12-09

Family

ID=13863883

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56085620A Pending JPS57201203A (en) 1981-06-05 1981-06-05 Production of optical fiber

Country Status (1)

Country Link
JP (1) JPS57201203A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5900036A (en) * 1996-08-30 1999-05-04 The United States Of America As Represented By The Secretary Of The Navy Multi-cylinder apparatus for making optical fibers, process and product

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5900036A (en) * 1996-08-30 1999-05-04 The United States Of America As Represented By The Secretary Of The Navy Multi-cylinder apparatus for making optical fibers, process and product

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