Glass manufacturing – Processes of manufacturing fibers – filaments – or preforms – With measuring – controlling – sensing – programming – timing,...
Patent
1995-05-19
1997-08-12
Mayes, Melvin
Glass manufacturing
Processes of manufacturing fibers, filaments, or preforms
With measuring, controlling, sensing, programming, timing,...
65416, 65421, 65422, 65426, 65427, C03B 37012, C03B 37018, C03B 3707
Patent
active
056560575
ABSTRACT:
The invention relates to a method of drying and sintering porous optical fiber preforms, especially those consisting of a solid glass core cane surrounded by a layer of cladding soot. After it is dried in a dehydrating atmosphere, the porous preform is heated to a presinter temperature just below that at which it would begin to rapidly densify. The various temperature holds and ramp rates are such that the preform is consolidated in a relatively short time without becoming cloudy or exhibiting other defects that would adversely affect the optical fiber drawn from the consolidated draw blank.
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Brown Gillian L.
Fiacco Richard M.
Walker John C.
Corning Incorporated
Mayes Melvin
Simmons, Jr. William J.
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