H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 10/17 (2006.01) H01S 3/067 (2006.01) H01S 3/16 (2006.01)
Patent
CA 2276997
An optical fiber for optical amplification used for 1.58 µm band signal light amplification, at least a core region thereof being doped with Er, wherein at least a part of the core region is made of silica glass co-doped with Ge and Al together with Er, and an average Er atomic concentration in the core region is from 950 wt-ppm to 3000 wt-ppm inclusive.
Endo Shinji
Ishikawa Shinji
Kakui Motoki
Marks & Clerk
Sumitomo Electric Industries Ltd.
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