JPS56149337A - Manufacture of preform for optical fiber transmitting infrared ray - Google Patents

Manufacture of preform for optical fiber transmitting infrared ray

Info

Publication number
JPS56149337A
JPS56149337A JP5175280A JP5175280A JPS56149337A JP S56149337 A JPS56149337 A JP S56149337A JP 5175280 A JP5175280 A JP 5175280A JP 5175280 A JP5175280 A JP 5175280A JP S56149337 A JPS56149337 A JP S56149337A
Authority
JP
Japan
Prior art keywords
preform
glass
mold
optical fiber
manufacture
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
JP5175280A
Other languages
Japanese (ja)
Other versions
JPS6047213B2 (en
Inventor
Nariyuki Mitachi
Toyotaka Manabe
Teruo Matsuyama
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 JP55051752A priority Critical patent/JPS6047213B2/en
Publication of JPS56149337A publication Critical patent/JPS56149337A/en
Publication of JPS6047213B2 publication Critical patent/JPS6047213B2/en
Expired 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
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C13/00—Fibre or filament compositions
    • C03C13/04—Fibre optics, e.g. core and clad fibre compositions
    • C03C13/041—Non-oxide glass compositions
    • C03C13/042—Fluoride glass compositions
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/32—Non-oxide glass compositions, e.g. binary or ternary halides, sulfides or nitrides of germanium, selenium or tellurium
    • C03C3/325—Fluoride 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
    • C03B2201/82—Fluoride glasses, e.g. ZBLAN glass

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Optics & Photonics (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Glass Compositions (AREA)

Abstract

PURPOSE:To manufacture the titled preform with extralow transmission loss by putting a fluoride glass rod for a core obtd. by pouring into a vertically splittable mold, annealing for a long time and furnace cooling into a fluoride glass tube for a clad obtd. by a similar method. CONSTITUTION:Fluoride glass such as a mixture of ZrF4, BaF2 and GdF2 is melted and poured into the mold composed of 2 semicylindrical outer frames 1, 2 and preheated close to the glass transition temp. The mold in then annealed at the preheating temp. and furnace cooled to form a glass rod for a core. On the other hand, similar fluoride glass is melted and poured into the cylindrical hollow part between 2 semicylindrical outer frames 11, 12 and 2 semicylindrical cores 15, 15' after assembling them, and a glass tube for a clad is formed by a similar method. By putting said glass rod into the glass tube, the desired preform for an optical fiber transmitting infrared rays is manufactured. This preform can transmit infrared rays of 2-6mum wavelengths.
JP55051752A 1980-04-21 1980-04-21 Manufacturing method of preform for infrared transmission optical fiber Expired JPS6047213B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55051752A JPS6047213B2 (en) 1980-04-21 1980-04-21 Manufacturing method of preform for infrared transmission optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55051752A JPS6047213B2 (en) 1980-04-21 1980-04-21 Manufacturing method of preform for infrared transmission optical fiber

Publications (2)

Publication Number Publication Date
JPS56149337A true JPS56149337A (en) 1981-11-19
JPS6047213B2 JPS6047213B2 (en) 1985-10-21

Family

ID=12895660

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55051752A Expired JPS6047213B2 (en) 1980-04-21 1980-04-21 Manufacturing method of preform for infrared transmission optical fiber

Country Status (1)

Country Link
JP (1) JPS6047213B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59137328A (en) * 1983-01-20 1984-08-07 Nippon Telegr & Teleph Corp <Ntt> Manufacture of optical fluoride fiber
JPH02229733A (en) * 1989-03-03 1990-09-12 Kokusai Denshin Denwa Co Ltd <Kdd> Method and device for producing low-scattering fluoride fiber

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6332123U (en) * 1986-08-13 1988-03-02
JPH0636882U (en) * 1992-10-23 1994-05-17 ぺんてる株式会社 File storage box

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59137328A (en) * 1983-01-20 1984-08-07 Nippon Telegr & Teleph Corp <Ntt> Manufacture of optical fluoride fiber
JPH02229733A (en) * 1989-03-03 1990-09-12 Kokusai Denshin Denwa Co Ltd <Kdd> Method and device for producing low-scattering fluoride fiber

Also Published As

Publication number Publication date
JPS6047213B2 (en) 1985-10-21

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