G - Physics – 02 – B
Patent
G - Physics
02
B
G02B 6/02 (2006.01) C03B 37/027 (2006.01) C03C 25/10 (2006.01) C03C 25/22 (2006.01) C23C 14/56 (2006.01) C23C 16/54 (2006.01) C03C 25/02 (1990.01)
Patent
CA 2096872
The present invention is directed to an apparatus for the production of a hermetically coated optical fiber in which a glass preform for an optical fiber is melt drawn in a melt drawing furnace to produce a bare optical fiber which is passed to a reactor where a feed gas is supplied. The bare optical fiber is coated with a thin carbon coating made from the feed gas using a chemical vapour deposition (CVD) method wherein the reactor comprises an upper portion to which the feed gas is supplied, a middle portion in which the CVD method is substantially carried out and a lower portion from which an exhaust gas is withdrawn, and a cross sectional area of the middle portion perpendicular to a longitudinal direction of the optical fiber is larger than that of the upper portion.
Aikawa Haruhiko
Danzuka Toshio
Nagayama Katsuya
Kirby Eades Gale Baker
Sumitomo Electric Industries Ltd.
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