G - Physics – 02 – B
Patent
G - Physics
02
B
26/197, 88/97
G02B 6/24 (2006.01) C03B 23/047 (2006.01) C03B 37/012 (2006.01) C03B 37/014 (2006.01) C03C 13/04 (2006.01) G02B 6/028 (2006.01)
Patent
CA 1243521
ABSTRACT OF THE DISCLOSURE An optical fiber comprising core glass having therearound a cladding comprising fluorine-containing quartz glass and a process for producing the same are disclosed. Said cladding is composed of an inner portion having a prescribed thickness and a constant fluorine content through its thickness and an outer portion having its fluorine content being gradually decreased in a radial direction so that its outermost surface has a fluorine content of about 0.7% by weight or less relative to SiO2.
453278
Fujiwara Kunio
Matsuda Yasuo
Tanaka Gotaro
Riches Mckenzie & Herbert Llp
Sumitomo Electric Industries Ltd.
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