ERBIUM-DOPED FIBER AMPLIFIER PUMPED AT 1.48 MU-M WITH EXTREMELY HIGH-EFFICIENCY

被引:27
|
作者
KASHIWADA, T
SHIGEMATSU, M
KOUGO, T
KANAMORI, H
NISHIMURA, M
机构
[1] Yokohama Laboratories, Sumitomo Electric Industries, Ltd, Yokohama
关键词
D O I
10.1109/68.84464
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
An erbium-doped fiber amplifier pumped at 1.48-mu-m with ultimately high efficiency has been developed. The fiber has a relative refractive index difference of 2.0% and Er3+ ions and alumina are doped only in a limited area of the core. A slope efficiency of 86% and a gain coefficient of 6.3 dB/mW by 1.48-mu-m pumping have been achieved as well as excellent spectral signal output performance. In spite of its small mode-field diameter, it is possible to fusion-splice the fiber to standard dispersion-shifted fibers with low loss due to diffusion of fluorine dopant in the cladding.
引用
收藏
页码:721 / 723
页数:3
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