C - Chemistry – Metallurgy – 03 – B
Patent
C - Chemistry, Metallurgy
03
B
C03B 37/027 (2006.01) C03B 37/029 (2006.01) C03C 25/10 (2006.01) C03C 25/22 (2006.01)
Patent
CA 2048199
Abstract A hermetically coated optical fiber is produced by preparing a bare optical fiber by melting and drawing an optical fiber preform in a fiber drawing furnace and then introducing the bare optical fiber into a reactor in which a raw material gas is provided, whereby to form in the reactor a hermetic film around the surface of the bare optical fiber by a chemical vapor deposition method or pyrolysis. Part of an inert gas for purging the fiber drawing furnace, which has been heated by a heater in the furnace is removed, and the rest of the inert gas is introduced into the reactor for diluting the raw material gas.
Aikawa Haruhiko
Ishiguro Yoichi
Katsuyama Yutaka
Nagayama Katsuya
Yoshimura Ichiro
Kirby Eades Gale Baker
Nippon Telegraph & Telephone Corporation
Sumitomo Electric Industries Ltd.
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