Title:
DRAWING OF OPTICAL FIBER
Document Type and Number:
Japanese Patent JP3683429
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent deterioration of the yield caused by a long time required when reaching the product takeout in a method for drawing of an optical fiber.
SOLUTION: The drawing speed is continuously increased from zero to a set speed, on the other hand, the heating temperature at the time of starting the drawing is set at 85-95% of a set temperature and the heating temperature is slowly raised so as to provide the set temperature when the drawing speed reaches 5-15% of the set speed in a method for drawing of an optical fiber comprising heating an optical fiber preform and then carrying out the drawing of the heated optical fiber preform into the optical fiber. Thereby, the time required for a regulating step extending from the start of heating of a drawing furnace to the product takeout can be shortened and the material loss can be reduced by that extent. As a result, the yield can be improved.
More Like This:
Inventors:
Takayo Kinoshita
Masahiro Tamura
Masahiro Tamura
Application Number:
JP4093399A
Publication Date:
August 17, 2005
Filing Date:
February 19, 1999
Export Citation:
Assignee:
Mitsubishi Cable Industries, Ltd.
International Classes:
C03B37/027; C03B37/07; G02B6/00; (IPC1-7): C03B37/027; C03B37/07; G02B6/00
Domestic Patent References:
| JP63265838A |
Attorney, Agent or Firm:
Hiroshi Maeda
Hiroshi Koyama
Hiroshi Koyama