JPS5622648A - Manufacture of glass fiber for optical transmission - Google Patents

Manufacture of glass fiber for optical transmission

Info

Publication number
JPS5622648A
JPS5622648A JP9790179A JP9790179A JPS5622648A JP S5622648 A JPS5622648 A JP S5622648A JP 9790179 A JP9790179 A JP 9790179A JP 9790179 A JP9790179 A JP 9790179A JP S5622648 A JPS5622648 A JP S5622648A
Authority
JP
Japan
Prior art keywords
crucible
glass
optical transmission
glass rod
rods
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
JP9790179A
Other languages
Japanese (ja)
Inventor
Osamu Nakamura
Yoshito Nishijima
Yoshio Kawabata
Takashi Tatsuta
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 JP9790179A priority Critical patent/JPS5622648A/en
Publication of JPS5622648A publication Critical patent/JPS5622648A/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01Manufacture of glass fibres or filaments
    • C03B37/02Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
    • C03B37/022Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from molten glass in which the resultant product consists of different sorts of glass or is characterised by shape, e.g. hollow fibres, undulated fibres, fibres presenting a rough surface
    • C03B37/023Fibres composed of different sorts of glass, e.g. glass optical fibres, made by the double crucible technique

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:To easily manufacture a glass fiber for optical transmission with a small transmission loss by introducing chlorine gas or a gaseous chlorine compound into a multiple quartz crucible, heat treating the crucible, filling glass rods, and melt spinning the rods into a fiber. CONSTITUTION:Prior to introducing a core forming glass rod and a clad forming glass rod into a quartz crucible for spinning, the whole crucible is heated with heating furnaces 5A, 5B. When the heating temp. reaches about 1,400-1,450 deg.C, chlorine gas or thionyl chloride is introduced from core glass rod introduction hole 14 and clad glass rod introduction hole 15, and heat treatment is carried out for about 1hr. Thus, hydroxyl groups contained in the crucible are diffused, leach out of the inner surface, react with Cl2 or SOCl2, forming HCl, S02 and 02, which are removed. The glass rods are then introduced into the crucible thus heat treated, and a high quality glass fiber for optical transmission is obtd. by spinning.
JP9790179A 1979-07-30 1979-07-30 Manufacture of glass fiber for optical transmission Pending JPS5622648A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9790179A JPS5622648A (en) 1979-07-30 1979-07-30 Manufacture of glass fiber for optical transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9790179A JPS5622648A (en) 1979-07-30 1979-07-30 Manufacture of glass fiber for optical transmission

Publications (1)

Publication Number Publication Date
JPS5622648A true JPS5622648A (en) 1981-03-03

Family

ID=14204630

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9790179A Pending JPS5622648A (en) 1979-07-30 1979-07-30 Manufacture of glass fiber for optical transmission

Country Status (1)

Country Link
JP (1) JPS5622648A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0975553A4 (en) * 1996-08-12 2000-02-02 Us Navy Process for making optical fibers from core and cladding glass rods

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0975553A4 (en) * 1996-08-12 2000-02-02 Us Navy Process for making optical fibers from core and cladding glass rods
EP0975553A1 (en) * 1996-08-12 2000-02-02 THE GOVERNMENT OF THE UNITED STATES OF AMERICA, as represented by THE SECRETARY OF THE NAVY Process for making optical fibers from core and cladding glass rods

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