JPS5659635A - Manufacturing apparatus for anhydrous quartz optical fiber base material - Google Patents

Manufacturing apparatus for anhydrous quartz optical fiber base material

Info

Publication number
JPS5659635A
JPS5659635A JP13404679A JP13404679A JPS5659635A JP S5659635 A JPS5659635 A JP S5659635A JP 13404679 A JP13404679 A JP 13404679A JP 13404679 A JP13404679 A JP 13404679A JP S5659635 A JPS5659635 A JP S5659635A
Authority
JP
Japan
Prior art keywords
furnace
temp
base material
optical fiber
moisture
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
JP13404679A
Other languages
Japanese (ja)
Other versions
JPS5915093B2 (en
Inventor
Takao Edahiro
Takao Shioda
Kazuo Sanada
Takeru Fukuda
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
NTT Inc
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 JP13404679A priority Critical patent/JPS5915093B2/en
Publication of JPS5659635A publication Critical patent/JPS5659635A/en
Publication of JPS5915093B2 publication Critical patent/JPS5915093B2/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
    • C03B37/014—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]
    • C03B37/0148—Means for heating preforms during or immediately prior to deposition
    • 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]
    • C03B37/01446—Thermal after-treatment of preforms, e.g. dehydrating, consolidating, sintering
    • C03B37/0146—Furnaces therefor, e.g. muffle tubes, furnace linings

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)

Abstract

PURPOSE:To provide an apparatus capable of easily manufacturing the titled base material while preventing the adsorption of moisture on a porous glass preform by installing a preheating furnace, between a dehydrating furnace and a transparently vitrifying furnace, set to a temp. between the temps. of the furnaces and placing the furnaces in a closed system. CONSTITUTION:In apparatus 1 for continuously manufacturing an anhydrous quartz optical fiber base material by a VAD method, preheating furnace 6 set to a temp. above the temp. of dehydrating furnace 5 and below the temp. of transparently vitrifying furnace 7 is installed between furnaces 5, 7, and apparatus 1 is placed in a closed system provided with no opening except gas inflow holes 15, 17, 21 and exhaust parts 16, 22. Because of the closed system moisture in the open air is not adsorbed on porous glass preform 3. Even if the atmospheric gas contains moisture, since the temp. of apparatus 1 is gradually raised from dehydrating furnace 5 to vitrifying furnace 7 through preheating furnace 6, the moisture is not adsorbed on preform 3. Thus, an anhydrous quartz optical fiber base material can be formed easily and surely.
JP13404679A 1979-10-17 1979-10-17 Manufacturing equipment for anhydrous silica optical fiber base material Expired JPS5915093B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13404679A JPS5915093B2 (en) 1979-10-17 1979-10-17 Manufacturing equipment for anhydrous silica optical fiber base material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13404679A JPS5915093B2 (en) 1979-10-17 1979-10-17 Manufacturing equipment for anhydrous silica optical fiber base material

Publications (2)

Publication Number Publication Date
JPS5659635A true JPS5659635A (en) 1981-05-23
JPS5915093B2 JPS5915093B2 (en) 1984-04-07

Family

ID=15119091

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13404679A Expired JPS5915093B2 (en) 1979-10-17 1979-10-17 Manufacturing equipment for anhydrous silica optical fiber base material

Country Status (1)

Country Link
JP (1) JPS5915093B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5973443A (en) * 1982-10-18 1984-04-25 Sumitomo Electric Ind Ltd Manufacture of glass proform for optical fiber
JPS6046940A (en) * 1983-08-22 1985-03-14 Furukawa Electric Co Ltd:The Preparation of parent material for optical glass and its device
KR101261095B1 (en) * 2004-03-29 2013-05-03 신에쓰 가가꾸 고교 가부시끼가이샤 Fabrication Apparatus for Porous Glass Preform
WO2020180466A1 (en) * 2019-03-05 2020-09-10 Corning Incorporated System and methods for processing an optical fiber preform

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5973443A (en) * 1982-10-18 1984-04-25 Sumitomo Electric Ind Ltd Manufacture of glass proform for optical fiber
JPS6046940A (en) * 1983-08-22 1985-03-14 Furukawa Electric Co Ltd:The Preparation of parent material for optical glass and its device
KR101261095B1 (en) * 2004-03-29 2013-05-03 신에쓰 가가꾸 고교 가부시끼가이샤 Fabrication Apparatus for Porous Glass Preform
WO2020180466A1 (en) * 2019-03-05 2020-09-10 Corning Incorporated System and methods for processing an optical fiber preform
US11713272B2 (en) 2019-03-05 2023-08-01 Corning Incorporated System and methods for processing an optical fiber preform
US12358830B2 (en) 2019-03-05 2025-07-15 Corning Incorporated System and methods for processing an optical fiber preform

Also Published As

Publication number Publication date
JPS5915093B2 (en) 1984-04-07

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