Method of preparing preforms for optical fibers

Details Method of preparing preforms for optical fibers Method of preparing preforms for optical fibers

1985-10-02

1987-07-14

Lindsay, Robert

Glass manufacturing

Processes

With shaping of particulate material and subsequent fusing...

65 311, 65 181, 350 9634, 501 12, C03B 37016

Patent

active

046800468

ABSTRACT:
A method of preparing preforms for optical fibers is provided. The method includes preparation of a first sol solution of a silicon alkoxide hydrolyzed with an acid and ultrafine particle silica, placement of the first sol solution into a container, and gelation of the first sol solution while the container is being rotated to yield a wet gel having a center hole. A second sol solution having a different composition than the first sol solution is prepared and used to fill the center hole in the wet gel. The second sol solution is then gelled to a wet gel composite and the composite is dried and sintered to yield the preform.

REFERENCES:
patent: 4173459 (1979-11-01), Aulich et al.
patent: 4324576 (1982-04-01), Matsuyama et al.
patent: 4417910 (1983-11-01), Passaret
patent: 4419115 (1983-12-01), Johnson et al.
patent: 4574063 (1986-03-01), Scherer

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