JPS57196733A - Manufacture of optical fiber - Google Patents

Manufacture of optical fiber

Info

Publication number
JPS57196733A
JPS57196733A JP56080590A JP8059081A JPS57196733A JP S57196733 A JPS57196733 A JP S57196733A JP 56080590 A JP56080590 A JP 56080590A JP 8059081 A JP8059081 A JP 8059081A JP S57196733 A JPS57196733 A JP S57196733A
Authority
JP
Japan
Prior art keywords
regions
fiber
heat
base material
burner
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
JP56080590A
Other languages
Japanese (ja)
Inventor
Makoto Tsukamoto
Mitsuo Yuasa
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 JP56080590A priority Critical patent/JPS57196733A/en
Publication of JPS57196733A publication Critical patent/JPS57196733A/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
    • C03B37/01861—Means for changing or stabilising the diameter or form of tubes or rods
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2203/00—Fibre product details, e.g. structure, shape
    • C03B2203/30—Polarisation maintaining [PM], i.e. birefringent products, e.g. with elliptical core, by use of stress rods, "PANDA" type fibres

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)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)

Abstract

PURPOSE:To accurately obtain a fiber having an ellipsoidal external shape without carrying out a pretreatment such as grinding by supplying different quantities of heat to the regions of a base material for a fiber formed by depositing a core on the inside of a glass pipe when the base material is rotated with heating to manufacture perform. CONSTITUTION:A material 2a for a core is deposited on the inner wall of a glass pipe 1a for a clad by a CVD method. The resulting base material 3a for a fiber is shifted to a collapsing stage, and while rotating the material 3a, a burner 4 is moved in the axial direction of the material 3a. At this time, the quantity of heat supplied to regions S1 of the material 3a opposite to each other in the diametrical direction is made different from that supplied to other regions S2 to provide different viscosities during melting. Thus, a preform 3b composed of a flat core and a flat clad is obtd. This preform 3b is drawn into a fiber. To supply different quantities of heat to the regions S1, S2 two or more among the rotating speed R of the base material 3a, the moving speed (v) of the burner 4, the quantity C of heat and the distance L between the burner and the material are controlled.
JP56080590A 1981-05-26 1981-05-26 Manufacture of optical fiber Pending JPS57196733A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56080590A JPS57196733A (en) 1981-05-26 1981-05-26 Manufacture of optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56080590A JPS57196733A (en) 1981-05-26 1981-05-26 Manufacture of optical fiber

Publications (1)

Publication Number Publication Date
JPS57196733A true JPS57196733A (en) 1982-12-02

Family

ID=13722549

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56080590A Pending JPS57196733A (en) 1981-05-26 1981-05-26 Manufacture of optical fiber

Country Status (1)

Country Link
JP (1) JPS57196733A (en)

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