Method of making optical fibers having improved core roundness

Details Method of making optical fibers having improved core roundness Method of making optical fibers having improved core roundness

1980-03-17

1981-11-03

Fisher, Richard V.

Glass manufacturing

Processes

Forming product or preform from molten glass

65110, 427163, C03B 2307, C03B 37025, C03B 3707, C03B 37075

Patent

active

042983649

ABSTRACT:
A method of producing optical fibers having improved core roundness and core-clad axis concentricity. Prior to the step of forming a layer of core material on the inner surface of a bait tube, the tube is pressurized and heated and shrunk at least 1 mm and thereafter the pressure is increased to inflate the tube until the outside diameter thereof approximates that of the originally provided bait tube.

REFERENCES:
patent: 3907536 (1975-09-01), Achener
patent: 4154591 (1979-05-01), French et al.
patent: 4199335 (1980-04-01), Gliemeroth
Okada et al., "Improved Chemical Vapour Deposition . . ."; Electronics Letters; Feb. 16, 1978; pp. 89 and 90.

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