JPS57196737A - Drawing apparatus for optical fiber - Google Patents

Drawing apparatus for optical fiber

Info

Publication number
JPS57196737A
JPS57196737A JP8113481A JP8113481A JPS57196737A JP S57196737 A JPS57196737 A JP S57196737A JP 8113481 A JP8113481 A JP 8113481A JP 8113481 A JP8113481 A JP 8113481A JP S57196737 A JPS57196737 A JP S57196737A
Authority
JP
Japan
Prior art keywords
tension
fiber
optical fiber
passed
light
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
JP8113481A
Other languages
Japanese (ja)
Inventor
Shigeki Sakaguchi
Motohiro Nakahara
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 JP8113481A priority Critical patent/JPS57196737A/en
Publication of JPS57196737A publication Critical patent/JPS57196737A/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
    • C03B37/0253—Controlling or regulating
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2205/00—Fibre drawing or extruding details
    • C03B2205/40—Monitoring or regulating the draw tension or draw rate

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 continuously measure the tension of a drawn optical fiber all over by attaching a tension detector detecting the tension by a photoelastic effect in a noncontact state to an apparatus for softening glass for an optical fiber in the heating furnace and for drawing it. CONSTITUTION:A base material 1 is gradually fed into a drawing furnace 3 with a base material feeder 2 and softened by heating. The diameter of the material 1 is made smaller, and the material 1 is continuously drawn into an optical fiber 4 with a capstan 7. At this time, the outside diameter of the fiber 4 is measured with an outside diameter measuring device 5, and the tension is detected with a tension detector 6 between the furnace 3 and the capstan 7 or a drum 8. For example, light from a light source 9 using He-Ne laser is converted into circularly polarized light by a polarizer 10, passed through a quarter- wave plate 11, converged by a lens 12, and passed through the center of the fiber 4. Since the passed light undergoes double refraction according to tension applied to the fiber 4, the tension of the fiber 4 is detected with an analyzer 13 and a photodetector 14. Thus, an optical fiber of high strength can be manufactured.
JP8113481A 1981-05-29 1981-05-29 Drawing apparatus for optical fiber Pending JPS57196737A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8113481A JPS57196737A (en) 1981-05-29 1981-05-29 Drawing apparatus for optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8113481A JPS57196737A (en) 1981-05-29 1981-05-29 Drawing apparatus for optical fiber

Publications (1)

Publication Number Publication Date
JPS57196737A true JPS57196737A (en) 1982-12-02

Family

ID=13737924

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8113481A Pending JPS57196737A (en) 1981-05-29 1981-05-29 Drawing apparatus for optical fiber

Country Status (1)

Country Link
JP (1) JPS57196737A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6418933A (en) * 1987-07-15 1989-01-23 Sumitomo Electric Industries Production of optical fiber
US7145646B2 (en) 2001-12-27 2006-12-05 Pirelli & C. S.P.A. On-line tension measurement in an optical fiber

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51107837A (en) * 1975-03-19 1976-09-24 Hitachi Ltd GARASUFUAIBASENBIKIKI

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51107837A (en) * 1975-03-19 1976-09-24 Hitachi Ltd GARASUFUAIBASENBIKIKI

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6418933A (en) * 1987-07-15 1989-01-23 Sumitomo Electric Industries Production of optical fiber
US7145646B2 (en) 2001-12-27 2006-12-05 Pirelli & C. S.P.A. On-line tension measurement in an optical fiber

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