CASCADED IN-LINE SEMICONDUCTOR-LASER AMPLIFIERS IN A COHERENT OPTICAL FIBER TRANSMISSION-SYSTEM

被引：22
|
作者：
GROSSKOPF, G
LUDWIG, R
WEBER, HG
机构：
[1] Nachrichtentechnik Berlin GMBH, Berlin, West Ger, Nachrichtentechnik Berlin GMBH, Berlin, West Ger
来源：
ELECTRONICS LETTERS | 1988年 / 24卷 / 09期
关键词：
FIBER OPTICS - LASERS; SEMICONDUCTOR; -; LIGHT; Amplifiers;
D O I：
10.1049/el:19880374
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：
A coherent optical transmission system with two broadband inline optical amplifiers was investigated. The main cause of system degradation was the generation of an interfering signal owing to backward scattered waves in the amplifier chain. The perturbation was eliminated by an isolator or sufficient attenuation between both amplifiers. It is possible to convert the effective 30 db gain of both amplifiers fully into an increase of the transmission span.
引用
收藏
页码：551 / 552
页数：2
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