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JPS54116426A - Production of optical fiber - Google Patents

Production of optical fiber

Info

Publication number
JPS54116426A
JPS54116426A JP2018878A JP2018878A JPS54116426A JP S54116426 A JPS54116426 A JP S54116426A JP 2018878 A JP2018878 A JP 2018878A JP 2018878 A JP2018878 A JP 2018878A JP S54116426 A JPS54116426 A JP S54116426A
Authority
JP
Japan
Prior art keywords
glass tube
rod
glass
core rod
shrinked
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
JP2018878A
Other languages
Japanese (ja)
Inventor
Junkichi Nakagawa
Toshihide Tokunaga
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.)
Hitachi Cable Ltd
Original Assignee
Hitachi Cable 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 Hitachi Cable Ltd filed Critical Hitachi Cable Ltd
Priority to JP2018878A priority Critical patent/JPS54116426A/en
Publication of JPS54116426A publication Critical patent/JPS54116426A/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
    • C03B37/01205—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments
    • C03B37/01211—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments by inserting one or more rods or tubes into a tube
    • 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
    • C03B37/01205—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments
    • C03B37/01225—Means for changing or stabilising the shape, e.g. diameter, of tubes or rods in general, e.g. collapsing
    • C03B37/01248—Means for changing or stabilising the shape, e.g. diameter, of tubes or rods in general, e.g. collapsing by collapsing without drawing

Landscapes

  • Engineering & Computer Science (AREA)
  • 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:A glass tube that is coated with the interlayer of glass film on the inner surface is shrinked in the inner diameter to the outer diameter of the core rod, thereby producing optical fibers with high roundness and no inclination in film thickness by the rod-in-tube method. CONSTITUTION:After glass tube 1 is coated with glass film 2 as the interlayer on the inner surface, the inner diameter is shrinked by use of burner 4. Then core rod 3 with the outer diameter close to the inner one of glass tube 1 is inserted and the both are integrated by fusing with heat. They are sufficiently treated with heat to adhere core rod 3 closely to glass tube 1 and remove strains at the interface. When the heating process is carried out by standing the glass tube upright, the inclination in wall thickness and reduction in roundness can be effectively reduced. Then, the resulting rod is drawn into small cross section to produce said optical fibers.
JP2018878A 1978-02-23 1978-02-23 Production of optical fiber Pending JPS54116426A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2018878A JPS54116426A (en) 1978-02-23 1978-02-23 Production of optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2018878A JPS54116426A (en) 1978-02-23 1978-02-23 Production of optical fiber

Publications (1)

Publication Number Publication Date
JPS54116426A true JPS54116426A (en) 1979-09-10

Family

ID=12020191

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2018878A Pending JPS54116426A (en) 1978-02-23 1978-02-23 Production of optical fiber

Country Status (1)

Country Link
JP (1) JPS54116426A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5836940A (en) * 1981-08-24 1983-03-04 Showa Electric Wire & Cable Co Ltd Manufacture of preform rod for optical fiber

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5836940A (en) * 1981-08-24 1983-03-04 Showa Electric Wire & Cable Co Ltd Manufacture of preform rod for optical fiber

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