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JPS5498256A - Producing apparatus of optical fiber stock - Google Patents

Producing apparatus of optical fiber stock

Info

Publication number
JPS5498256A
JPS5498256A JP491178A JP491178A JPS5498256A JP S5498256 A JPS5498256 A JP S5498256A JP 491178 A JP491178 A JP 491178A JP 491178 A JP491178 A JP 491178A JP S5498256 A JPS5498256 A JP S5498256A
Authority
JP
Japan
Prior art keywords
heating system
sweeping
resets
raw material
tube
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
JP491178A
Other languages
Japanese (ja)
Inventor
Hidenori Nomura
Hiroshi Honmo
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP491178A priority Critical patent/JPS5498256A/en
Publication of JPS5498256A publication Critical patent/JPS5498256A/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
    • C03B37/012—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]
    • C03B37/018—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] by glass deposition on a glass substrate, e.g. by inside-, modified-, plasma-, or plasma modified- chemical vapour deposition [ICVD, MCVD, PCVD, PMCVD], i.e. by thin layer coating on the inside or outside of a glass tube or on a glass rod
    • C03B37/01807—Reactant delivery systems, e.g. reactant deposition burners
    • C03B37/01815—Reactant deposition burners or deposition heating means

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 axial deformation caused at the heating sweeping of reaction system and stably obtain the stock of high right circularity by providing a means of forcefully cooling the reaction system which deposits the glass raw material gases having been supplied to the inside wall of a tubular object to optical fiber glass. CONSTITUTION:A force cooling system 5 including a control valve 51 which is so controlled as to become open only during the time when a heating system 3 resets in the upstream direction after sweeping from the raw material upper stream to the lower stream is provided. The most softened portion of the quartz glass tube immediate before the heating system 3 resets to the upper stream after sweeping toward the raw material lower stream is force-cooled by spouting a nitrogen gas from an introducing tube 52 within the time when the heating system resets and moves. As a result, at the time when the heating system 3 restarts sweeping to the lower stream, the entire part of the quartz tube of the reaction tube 2 has been sufficiently cooled except the portion in the oxyhydrogen flame of the heating system and has hardened to the extent at which deformation is virtualy impossible.
JP491178A 1978-01-19 1978-01-19 Producing apparatus of optical fiber stock Pending JPS5498256A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP491178A JPS5498256A (en) 1978-01-19 1978-01-19 Producing apparatus of optical fiber stock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP491178A JPS5498256A (en) 1978-01-19 1978-01-19 Producing apparatus of optical fiber stock

Publications (1)

Publication Number Publication Date
JPS5498256A true JPS5498256A (en) 1979-08-03

Family

ID=11596813

Family Applications (1)

Application Number Title Priority Date Filing Date
JP491178A Pending JPS5498256A (en) 1978-01-19 1978-01-19 Producing apparatus of optical fiber stock

Country Status (1)

Country Link
JP (1) JPS5498256A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2753444A1 (en) * 1996-09-13 1998-03-20 Samsung Electronics Co Ltd COOLING APPARATUS USED IN THE MANUFACTURE OF AN OPTICAL FIBER PREFORM

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2753444A1 (en) * 1996-09-13 1998-03-20 Samsung Electronics Co Ltd COOLING APPARATUS USED IN THE MANUFACTURE OF AN OPTICAL FIBER PREFORM

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