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
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 1991年 / 3卷 / 08期
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.
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页码：721 / 723
页数：3
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