JPS5617941A - Manufacture of optical fiber - Google Patents

Manufacture of optical fiber

Info

Publication number
JPS5617941A
JPS5617941A JP9543779A JP9543779A JPS5617941A JP S5617941 A JPS5617941 A JP S5617941A JP 9543779 A JP9543779 A JP 9543779A JP 9543779 A JP9543779 A JP 9543779A JP S5617941 A JPS5617941 A JP S5617941A
Authority
JP
Japan
Prior art keywords
refractive index
dopant
temp
optical fiber
glass layer
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
JP9543779A
Other languages
Japanese (ja)
Inventor
Yoshio Kawabata
Takashi Toge
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP9543779A priority Critical patent/JPS5617941A/en
Publication of JPS5617941A publication Critical patent/JPS5617941A/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
    • C03B2203/00—Fibre product details, e.g. structure, shape
    • C03B2203/10—Internal structure or shape details
    • C03B2203/18—Axial perturbations, e.g. in refractive index or composition

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 manufacture an optical fiber having a refractive index distribution coefficient which changes periodically in the longitudinal direction by controlling the dopant concn. of a glass layer and the distribution of refractive index by utilizing the fact that the reaction efficiency of halide as glass starting material with O2 and vapor pressure of the reaction product oxide are changed by the heating temp. CONSTITUTION:SiCl4 as principal starting material for core glass, GeCl4 as a refractive index controlling dopant, POCl3 as a lowering dopant of the vitrifying temp. and 02 are continuously fed into reaction tube 9 and heated with oxyhydrogen burner 11 to induce the oxidation reaction of the halide and 02 in a high temp. region 10. At this time, by periodically changing the heating temp., the vapor pressure of the resulting oxide is controlled to periodically change the dopant concn. of a glass layer deposited. As a result, the value of the refractive index distribution coefficient also changes periodically in the longitudinal direction. Such a core glass layer is deposited predetermined times, and after carrying out a stage 9 for collapsing hollow parts of the glan fiber and a drawing stage, a product optical fiber is obtd.
JP9543779A 1979-07-25 1979-07-25 Manufacture of optical fiber Pending JPS5617941A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9543779A JPS5617941A (en) 1979-07-25 1979-07-25 Manufacture of optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9543779A JPS5617941A (en) 1979-07-25 1979-07-25 Manufacture of optical fiber

Publications (1)

Publication Number Publication Date
JPS5617941A true JPS5617941A (en) 1981-02-20

Family

ID=14137667

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9543779A Pending JPS5617941A (en) 1979-07-25 1979-07-25 Manufacture of optical fiber

Country Status (1)

Country Link
JP (1) JPS5617941A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0194666A2 (en) * 1985-03-14 1986-09-17 CSELT Centro Studi e Laboratori Telecomunicazioni S.p.A. Method of fabricating birefringent optical fibres
EP0664464A1 (en) * 1993-12-27 1995-07-26 Corning Incorporated Optical fibre for soliton transmission and method of making
EP1116697A2 (en) * 2000-01-14 2001-07-18 Samsung Electronics Co., Ltd. Preform for dispersion-managed optical fibre and method of fabricating the preform by modified chemical vapour deposition

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0194666A2 (en) * 1985-03-14 1986-09-17 CSELT Centro Studi e Laboratori Telecomunicazioni S.p.A. Method of fabricating birefringent optical fibres
EP0664464A1 (en) * 1993-12-27 1995-07-26 Corning Incorporated Optical fibre for soliton transmission and method of making
EP1116697A2 (en) * 2000-01-14 2001-07-18 Samsung Electronics Co., Ltd. Preform for dispersion-managed optical fibre and method of fabricating the preform by modified chemical vapour deposition
EP1116697A3 (en) * 2000-01-14 2002-06-26 Samsung Electronics Co., Ltd. Preform for dispersion-managed optical fibre and method of fabricating the preform by modified chemical vapour deposition
US6523368B2 (en) 2000-01-14 2003-02-25 Samsung Electronics Co., Ltd Dispersion-managed fiber preform and fabricating method thereof by MCVD

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