Title :
γ-ray irradiation durability of erbium-doped fibres
Author :
Fukuda, C. ; Chigusa, Y. ; Kashiwada, T. ; Onishi, M. ; Kanamori, H. ; Okamoto, Shusuke
Author_Institution :
Sumitomo Electr. Ind. Ltd., Yokohama
fDate :
8/4/1994 12:00:00 AM
Abstract :
The long-term behaviour of erbium-doped fibres under γ-ray irradiation at a low dose rate of 0.5R/year was predicted for the purpose of applying the fibres to transoceanic transmission systems, based on the experimental result that permanent defects in fibres were dominantly generated at low dose rates. The estimated degradation of transmission loss and amplification gain after 25 years in undersea were 0.04 dB/km and 0.3 dB, respectively
Keywords :
erbium; gamma-ray effects; optical cables; optical fibres; optical losses; γ-ray irradiation durability; Er3+-doped fibre; amplification gain; dose rates; low dose rate; permanent defects; transmission loss; transoceanic transmission systems;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19940870
