Title:
光ファイバの製造方法
Document Type and Number:
Japanese Patent JP4482954
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for producing an optical fiber by which the application to mass production of an optical fiber wire having the surface coated with a resin can be made when reducing the Rayleigh scattering intensity and producing the optical fiber having a low transmission loss. SOLUTION: This apparatus for producing an optical fiber comprises a wire drawing device 1 having a wire drawing furnace 11, a heating furnace 21 for annealing and a resin curing part 31. The optical fiber 3 subjected to thermal wire drawing in the wire drawing furnace 11 is fed to the heating furnace 21 for the annealing and a prescribed site of the optical fiber 3 is annealed at a prescribed cooling rate. The temperature of a heater 22 of the heating furnace 21 for the annealing is set so that the temperature of the furnace center is within the range of 1,300-1,600 deg.C. The resultant optical fiber 3 is then coated with a UV resin liquid 52 with a coating die 51 to hot cure the UV resin in the resin curing part 31. Thereby, an optical fiber wire 4 is obtained.
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Inventors:
Katsuya Nagayama
Yuichi Oga
Tatsuhiko Saito
Kazuya Kuwahara
Yuichi Oga
Tatsuhiko Saito
Kazuya Kuwahara
Application Number:
JP14814499A
Publication Date:
June 16, 2010
Filing Date:
May 27, 1999
Export Citation:
Assignee:
Sumitomo Electric Industries, Ltd.
International Classes:
C03B37/10; C03C25/10; C03C25/12; G02B6/44
Domestic Patent References:
| JP4059631A | ||||
| JP9142890A | ||||
| JP60186430A | ||||
| JP10218635A | ||||
| JP10025127A | ||||
| JP1239035A | ||||
| JP61097143A |
Foreign References:
| DE3713029A1 |
Attorney, Agent or Firm:
Yoshiki Hasegawa
Tatsuya Shioda
Shiro Terasaki
Masatoshi Shibata
Tatsuya Shioda
Shiro Terasaki
Masatoshi Shibata