JPS5590435A - Production of optical transmission line - Google Patents

Production of optical transmission line

Info

Publication number
JPS5590435A
JPS5590435A JP4339179A JP4339179A JPS5590435A JP S5590435 A JPS5590435 A JP S5590435A JP 4339179 A JP4339179 A JP 4339179A JP 4339179 A JP4339179 A JP 4339179A JP S5590435 A JPS5590435 A JP S5590435A
Authority
JP
Japan
Prior art keywords
rod
glass
heated
tube
fiber
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
JP4339179A
Other languages
Japanese (ja)
Inventor
Satoshi Shiraishi
Kunio Fujiwara
Shiro Kurosaki
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.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries 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 Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP4339179A priority Critical patent/JPS5590435A/en
Publication of JPS5590435A publication Critical patent/JPS5590435A/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
    • C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
    • C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
    • C03B37/027—Fibres composed of different sorts of glass, e.g. glass optical fibres
    • C03B37/02754—Solid fibres drawn from hollow preforms
    • 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
    • C03B37/01869—Collapsing
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2205/00—Fibre drawing or extruding details
    • C03B2205/12—Drawing solid optical fibre directly from a hollow preform
    • C03B2205/14—Drawing solid optical fibre directly from a hollow preform comprising collapse of an outer tube onto an inner central solid preform rod
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2205/00—Fibre drawing or extruding details
    • C03B2205/12—Drawing solid optical fibre directly from a hollow preform
    • C03B2205/16—Drawing solid optical fibre directly from a hollow preform the drawn fibre consisting of circularly symmetric core and clad

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)

Abstract

PURPOSE:To provide a high-productivity preparation of optical transmission line having dense sectional area and desired refractive index distribution by a method wherein a glass tube internal surface is formed with layer whose optical property is different from the glass tube, heated to form into a rod, then is spinned into fiber form. CONSTITUTION:The internal surface of a transparent glass material tube 5 is smoothed, on which a glassy deposited layer 6 whose optical property is different from the glass tube 5 is formed. This complex body is charged in a furnace 7 and is heated to about its melting temperature so that the center hollow section is closed to form into a rod. The formed rod has the deposited layer 6 whose density is higher than that of the outer glass. The rod is inserted into a second tube whose media 8, 9 have desired refractive index. This combination glass is heated in the furnace 7 and is spinned to form a fiber. The fiber, as required, undergoes heat treatment to enhance light transmissin.
JP4339179A 1979-04-09 1979-04-09 Production of optical transmission line Pending JPS5590435A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4339179A JPS5590435A (en) 1979-04-09 1979-04-09 Production of optical transmission line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4339179A JPS5590435A (en) 1979-04-09 1979-04-09 Production of optical transmission line

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP3591672A Division JPS5545498B2 (en) 1972-04-10 1972-04-10

Publications (1)

Publication Number Publication Date
JPS5590435A true JPS5590435A (en) 1980-07-09

Family

ID=12662486

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4339179A Pending JPS5590435A (en) 1979-04-09 1979-04-09 Production of optical transmission line

Country Status (1)

Country Link
JP (1) JPS5590435A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11352286B2 (en) * 2018-09-03 2022-06-07 Draka Comteq B.V. Method, device, and system for heating an elongate silica cylinder in manufacturing optical fibers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11352286B2 (en) * 2018-09-03 2022-06-07 Draka Comteq B.V. Method, device, and system for heating an elongate silica cylinder in manufacturing optical fibers

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