JPS54134129A - Manufacture of basic material for light transmitting fiber - Google Patents

Manufacture of basic material for light transmitting fiber

Info

Publication number
JPS54134129A
JPS54134129A JP3961378A JP3961378A JPS54134129A JP S54134129 A JPS54134129 A JP S54134129A JP 3961378 A JP3961378 A JP 3961378A JP 3961378 A JP3961378 A JP 3961378A JP S54134129 A JPS54134129 A JP S54134129A
Authority
JP
Japan
Prior art keywords
steam
low
gas temperature
bulk density
porous preform
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
JP3961378A
Other languages
Japanese (ja)
Other versions
JPS5636130B2 (en
Inventor
Takao Edahiro
Takao Shioda
Yutaka Osanai
Kazuo Sanada
Hideaki Goshima
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 JP3961378A priority Critical patent/JPS54134129A/en
Publication of JPS54134129A publication Critical patent/JPS54134129A/en
Publication of JPS5636130B2 publication Critical patent/JPS5636130B2/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
    • C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
    • C03B37/01413—Reactant delivery systems
    • C03B37/0142—Reactant deposition burners
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2207/00—Glass deposition burners
    • C03B2207/04—Multi-nested ports
    • C03B2207/06—Concentric circular ports
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2207/00—Glass deposition burners
    • C03B2207/04—Multi-nested ports
    • C03B2207/08—Recessed or protruding ports
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2207/00—Glass deposition burners
    • C03B2207/20—Specific substances in specified ports, e.g. all gas flows specified
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2207/00—Glass deposition burners
    • C03B2207/36—Fuel or oxidant details, e.g. flow rate, flow rate ratio, fuel additives

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General 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 reduce the bulk density of a porous preform, to facilitate the OH group removal, and to decrease the volatilization of dopants, by hydrolyzing glass powder with an oxyhydrogen flame comprising a large amount of steam at a reduced gas temperature. CONSTITUTION:H2 and steam are fed into the third layer 102 of the four-layer burner 10 to form the oxyhydrogen flame 34 comprising a large amount of steam and to reduce the gas temperature. The size of the glass particles 36 is reduced to give the porous preform 26 of low bulk density, which is then vitrified by the heater 28 in the H2 atmosphere together with OH group removal. The low bulk density of the porous preform permits easy removal of the OH groups, and the low gas temperature reduces the volatilization due to the disproportionation of dopants, particulaply GeO2. According to the method, the high-quality basic material 30 for optical fiber with a low OH group content can be obtained.
JP3961378A 1978-04-04 1978-04-04 Manufacture of basic material for light transmitting fiber Granted JPS54134129A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3961378A JPS54134129A (en) 1978-04-04 1978-04-04 Manufacture of basic material for light transmitting fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3961378A JPS54134129A (en) 1978-04-04 1978-04-04 Manufacture of basic material for light transmitting fiber

Publications (2)

Publication Number Publication Date
JPS54134129A true JPS54134129A (en) 1979-10-18
JPS5636130B2 JPS5636130B2 (en) 1981-08-21

Family

ID=12557951

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3961378A Granted JPS54134129A (en) 1978-04-04 1978-04-04 Manufacture of basic material for light transmitting fiber

Country Status (1)

Country Link
JP (1) JPS54134129A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5717434A (en) * 1980-07-01 1982-01-29 Nippon Telegr & Teleph Corp <Ntt> Manufacture of base material for optical fiber
US4367085A (en) * 1980-01-07 1983-01-04 Nippon Telegraph & Telephone Public Corporation Method of fabricating multi-mode optical fiber preforms
US4388098A (en) * 1979-09-26 1983-06-14 Nippon Telegraph & Telephone Public Corporation Apparatus for producing multi-component glass fiber preform

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4388098A (en) * 1979-09-26 1983-06-14 Nippon Telegraph & Telephone Public Corporation Apparatus for producing multi-component glass fiber preform
US4367085A (en) * 1980-01-07 1983-01-04 Nippon Telegraph & Telephone Public Corporation Method of fabricating multi-mode optical fiber preforms
JPS5717434A (en) * 1980-07-01 1982-01-29 Nippon Telegr & Teleph Corp <Ntt> Manufacture of base material for optical fiber
JPS6253452B2 (en) * 1980-07-01 1987-11-10 Nippon Telegraph & Telephone

Also Published As

Publication number Publication date
JPS5636130B2 (en) 1981-08-21

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