JPS55140726A - Manufacture of optical fiber - Google Patents

Manufacture of optical fiber

Info

Publication number
JPS55140726A
JPS55140726A JP4596579A JP4596579A JPS55140726A JP S55140726 A JPS55140726 A JP S55140726A JP 4596579 A JP4596579 A JP 4596579A JP 4596579 A JP4596579 A JP 4596579A JP S55140726 A JPS55140726 A JP S55140726A
Authority
JP
Japan
Prior art keywords
metal
crucible
optical fiber
glass
liq
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
JP4596579A
Other languages
Japanese (ja)
Inventor
Shuichi Shibata
Toyotaka Manabe
Nariyuki Mitachi
Mitsuho Yasu
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP4596579A priority Critical patent/JPS55140726A/en
Publication of JPS55140726A publication Critical patent/JPS55140726A/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
    • C03B37/022—Manufacture 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
    • C03B37/023—Fibres composed of different sorts of glass, e.g. glass optical fibres, made by the double crucible technique
    • 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
    • C03B37/022—Manufacture 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
    • C03B37/023—Fibres composed of different sorts of glass, e.g. glass optical fibres, made by the double crucible technique
    • C03B37/0235—Thermal treatment of the fibre during the drawing process, e.g. cooling
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2205/00—Fibre drawing or extruding details
    • C03B2205/50—Cooling the drawn fibre using liquid coolant prior to coating, e.g. indirect cooling via cooling jacket
    • C03B2205/52—Cooling the drawn fibre using liquid coolant prior to coating, e.g. indirect cooling via cooling jacket by direct contact with liquid coolant, e.g. as spray, mist

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)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)

Abstract

PURPOSE:To prevent crystallization and obtain an optical fiber free from scratches due to a conventional rapid cooling method using a metal roll by contacting a liq. metal as a cooling medium to a drawn optical fiber to rapidly cool the fiber in drawing. CONSTITUTION:Molten glass 2 in crucible 1 provided with heating section 3 is put into the inner crucible of crucible 4 composed of inner and outer crucibles and housing liq. metal 5 such as Ga or In for cooling together with crucible 1. By applying pressure to glass 2 and metal 5 with inert gases, respectively, glass 2 is spouted from spouting outlet 6 together with metal 5. As a result, the spouted glass is solidified by rapid cooling. In place of a metal roll of a conventional method liq. metal 5 is used to prevent occurrence of scratches, and by making crucible 1 double crucible type one an optical fiber free from a strength lowering and having core and clad is obtd.
JP4596579A 1979-04-17 1979-04-17 Manufacture of optical fiber Pending JPS55140726A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4596579A JPS55140726A (en) 1979-04-17 1979-04-17 Manufacture of optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4596579A JPS55140726A (en) 1979-04-17 1979-04-17 Manufacture of optical fiber

Publications (1)

Publication Number Publication Date
JPS55140726A true JPS55140726A (en) 1980-11-04

Family

ID=12733941

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4596579A Pending JPS55140726A (en) 1979-04-17 1979-04-17 Manufacture of optical fiber

Country Status (1)

Country Link
JP (1) JPS55140726A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104185931A (en) * 2011-12-19 2014-12-03 Ipg光子公司 High power metal clad mode absorber

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52129533A (en) * 1976-04-23 1977-10-31 Hitachi Ltd Reduction of diameter variation of optical fiber
JPS52134622A (en) * 1976-05-07 1977-11-11 Asahi Glass Co Ltd Process for tempering glass article

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52129533A (en) * 1976-04-23 1977-10-31 Hitachi Ltd Reduction of diameter variation of optical fiber
JPS52134622A (en) * 1976-05-07 1977-11-11 Asahi Glass Co Ltd Process for tempering glass article

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104185931A (en) * 2011-12-19 2014-12-03 Ipg光子公司 High power metal clad mode absorber
JP2015505162A (en) * 2011-12-19 2015-02-16 アイピージー フォトニクス コーポレーション High power metal clad mode absorber

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