JPS56134529A - Preparation of mother material for optical fiber - Google Patents

Preparation of mother material for optical fiber

Info

Publication number
JPS56134529A
JPS56134529A JP3742580A JP3742580A JPS56134529A JP S56134529 A JPS56134529 A JP S56134529A JP 3742580 A JP3742580 A JP 3742580A JP 3742580 A JP3742580 A JP 3742580A JP S56134529 A JPS56134529 A JP S56134529A
Authority
JP
Japan
Prior art keywords
gas
pressure
arrow direction
mother material
amount
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
JP3742580A
Other languages
Japanese (ja)
Other versions
JPS621332B2 (en
Inventor
Katsuyuki Imoto
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.)
Hitachi Cable Ltd
Hitachi Ltd
Original Assignee
Hitachi Cable Ltd
Hitachi Ltd
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 Hitachi Cable Ltd, Hitachi Ltd filed Critical Hitachi Cable Ltd
Priority to JP3742580A priority Critical patent/JPS56134529A/en
Publication of JPS56134529A publication Critical patent/JPS56134529A/en
Publication of JPS621332B2 publication Critical patent/JPS621332B2/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]
    • C03B37/0144—Means for after-treatment or catching of worked reactant gases

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 variability of the outer diameter of a mother material for optical fiber and the fluctuation of differential pressure, by providing a gas feed pipe for a bias gas along the flow direction of an exhaust gas, by adjusting the flow amount of the bias gas so that the pressure of a reaction vessel is controlled. CONSTITUTION:The flame 5 containing finely divided particles of glass prepared by the flame hydrolyzing burner 1 is blown to the target 4 moving in the arrow direction 7 while rotating in the arrow direction 8 so that the rodlike mother material 2 for porous glass is grown. A gas is introduced along the exhaust gas 14 flowing in the exhaust pipe 13 through the gas feed device 19 in the arrow direction 21 from the gas feed pipe 20, the pressure P1 in the reaction vessel 6 is detected by the pressure detecting device 15, and this pressure P1 is compared with the standard pressure value Pr which is previously set by the controlling part 18. When it causes P1not equal to P2, an output signal is generated at the output end of the controllig part 18 and it is returned to the device 19 by feed back. When P1>Pr, the amount of gas flowing in the arrow direction 21' is increased, and when P1<Pr, the amount of gas is reduced so that the device 19 is controlled.
JP3742580A 1980-03-26 1980-03-26 Preparation of mother material for optical fiber Granted JPS56134529A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3742580A JPS56134529A (en) 1980-03-26 1980-03-26 Preparation of mother material for optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3742580A JPS56134529A (en) 1980-03-26 1980-03-26 Preparation of mother material for optical fiber

Publications (2)

Publication Number Publication Date
JPS56134529A true JPS56134529A (en) 1981-10-21
JPS621332B2 JPS621332B2 (en) 1987-01-13

Family

ID=12497158

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3742580A Granted JPS56134529A (en) 1980-03-26 1980-03-26 Preparation of mother material for optical fiber

Country Status (1)

Country Link
JP (1) JPS56134529A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5841062A (en) * 1981-08-27 1983-03-10 大日本印刷株式会社 Packing method and packing vessel

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5626737A (en) * 1979-08-14 1981-03-14 Nippon Telegr & Teleph Corp <Ntt> Exhaust adjuster for optical fiber base material manufacturing apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5626737A (en) * 1979-08-14 1981-03-14 Nippon Telegr & Teleph Corp <Ntt> Exhaust adjuster for optical fiber base material manufacturing apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5841062A (en) * 1981-08-27 1983-03-10 大日本印刷株式会社 Packing method and packing vessel

Also Published As

Publication number Publication date
JPS621332B2 (en) 1987-01-13

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