Method for controlling fiber diameter during optical fiber drawi

Details Method for controlling fiber diameter during optical fiber drawi Method for controlling fiber diameter during optical fiber drawi

1990-04-13

1991-12-17

Fisher, Richard V.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 13, 65 29, 65163, C03B 37025, C03B 3707

Patent

active

050731793

ABSTRACT:
There is provided a drawing process for producing an optical fiber which comprises drawing the optical fiber from a preform therefor under tension to form the optical fiber while heating and melting the preform, wherein an outer diameter of the optical fiber on which no coating has been provided is measured at a position at which shrinkage of the outer diameter of the optical fiber, while stretched, is not larger than 0.5% and drawing conditions are controlled based on the deviation of the measured diameter from a preselected outer diameter.

REFERENCES:
patent: 4123242 (1978-10-01), Imoto et al.
patent: 4280827 (1981-07-01), Murphy
patent: 4523938 (1985-06-01), Grego
Yasuo Suganuma, "Optical Fiber Producing Apparatus", Patent Abstracts of Japan, Jan. 1978, 10007 E 77.
Katsuyuki Imoto, "Device for Controlling Wire Diameter of . . . ", Patent Abstracts of Japan, Apr. 1978, 1273 E 78.
Nobutaka Suzuki, "Preparation of Optical Fiber", Patent Abstracts of Japan, May 1987, 22 C 425.

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