JPS5463845A - Production of optical fiber - Google Patents

Production of optical fiber

Info

Publication number
JPS5463845A
JPS5463845A JP13044477A JP13044477A JPS5463845A JP S5463845 A JPS5463845 A JP S5463845A JP 13044477 A JP13044477 A JP 13044477A JP 13044477 A JP13044477 A JP 13044477A JP S5463845 A JPS5463845 A JP S5463845A
Authority
JP
Japan
Prior art keywords
gases
sedimented
material gases
refractive index
produce
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
JP13044477A
Other languages
Japanese (ja)
Inventor
Akira Mita
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 JP13044477A priority Critical patent/JPS5463845A/en
Publication of JPS5463845A publication Critical patent/JPS5463845A/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
    • 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

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)
  • Surface Treatment Of Glass Fibres Or Filaments (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)

Abstract

PURPOSE:To produce an optical fiber, which has no variation in refractive index in the form of an annular ring, by introducing gases of glass material into a longitudinal hot portion of a quartz pipe, when it is intended to produce a communication glass fiber, which has a refractive index distribution of graded type, by the CVD method. CONSTITUTION:Glass material gases are injected into the opening 25 of a quartz pipe 21, while transversely moving the pipe 21, so that all the components of the material gases are simultaneously sedimented and separated in the portion (corresponding to that shown at 23), where the temperature takes the maximum by the heating process of a ring burner 22. After one sedimented layer has been formed, the composition of the material gases is changed, and the formation of the next separated layer is made. These steps are repeated. And, the residual gases, which have failed to react during the blowing step of the material gases, and the reaction products are always sucked and discharged during operation through a discharge duct 27. As a result, even at such a low temperature portion as can effect the reactions of germanium and boron which can react at a slightly lower temperature near the highest temperature range, these elements can be prevented from reacting and being sedimented.
JP13044477A 1977-10-31 1977-10-31 Production of optical fiber Pending JPS5463845A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13044477A JPS5463845A (en) 1977-10-31 1977-10-31 Production of optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13044477A JPS5463845A (en) 1977-10-31 1977-10-31 Production of optical fiber

Publications (1)

Publication Number Publication Date
JPS5463845A true JPS5463845A (en) 1979-05-23

Family

ID=15034381

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13044477A Pending JPS5463845A (en) 1977-10-31 1977-10-31 Production of optical fiber

Country Status (1)

Country Link
JP (1) JPS5463845A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100437281B1 (en) * 2002-07-16 2004-06-23 에스케이씨 주식회사 Fabrication of quasi-graded index profile by thermal diffusion of dopants in plastic optical fiber preforms

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100437281B1 (en) * 2002-07-16 2004-06-23 에스케이씨 주식회사 Fabrication of quasi-graded index profile by thermal diffusion of dopants in plastic optical fiber preforms

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