Carbon coating for a starting member used in producing optical w

Details Carbon coating for a starting member used in producing optical w Carbon coating for a starting member used in producing optical w

1977-08-26

1980-05-27

Fisher, Richard V.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 26, 427133, 427163, C03C 2502

Patent

active

042048508

ABSTRACT:
In making a preform for an optical waveguide, the bait rod is coated with carbon. After the preform is built up on the bait rod, it is easily removed. The carbon coating produces a smooth improved inner surface in the preform, thereby eliminating flaws which otherwise may be present when the preform is drawn into a waveguide.

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patent: 3420644 (1969-01-01), Lirones
patent: 3495962 (1970-02-01), Norton et al.
patent: 3775075 (1973-11-01), Keck et al.
patent: 3801299 (1974-04-01), Renki
patent: 3806570 (1974-04-01), Flamenbaum et al.
patent: 3823995 (1974-07-01), Carpenter
patent: 3932162 (1976-01-01), Blankenship
patent: 3933453 (1976-01-01), Burke et al.
patent: 3957474 (1976-05-01), Kobayashi et al.

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