REDUCTION OF EXCESS INTENSITY NOISE INDUCED BY EXTERNAL REFLECTION IN A GAIN-COUPLED DISTRIBUTED FEEDBACK SEMICONDUCTOR-LASER

被引：61

作者：

NAKANO, Y ^{[1
]}

DEGUCHI, Y ^{[1
]}

IKEDA, K ^{[1
]}

LUO, Y ^{[1
]}

TADA, K ^{[1
]}

机构：

[1] OPT MEASUREMENT TECHNOL DEV CO LTD, TOKYO 180, JAPAN

来源：

IEEE JOURNAL OF QUANTUM ELECTRONICS | 1991年 / 27卷 / 06期

关键词：

Semiconductor Devices;

D O I：

10.1109/3.89998

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：

Distributed feedback (DFB) lasers operating on the basis of gain coupling (GC) are expected to have a smaller sensitivity to external reflection than conventional index-coupled (IC) DFB lasers. In this paper, we report, for the first time, intensity noise characteristics of the GC DFB laser under the influence of external optical feedback in comparison to the IC DFB laser. It has been found that the excess noise induced by returning light is less than that of the IC DFB laser if the optical feedback is restricted below almost-equal-to 1%. This may save the need for optical isolators.

引用

页码：1732 / 1735

页数：4

共 6 条

[1] COUPLED-WAVE THEORY OF DISTRIBUTED FEEDBACK LASERS [J].