CORRUGATION-PITCH MODULATED MQW-DFB LASERS WITH NARROW SPECTRAL LINEWIDTH

被引：52
|
作者：
OKAI, M
TSUCHIYA, T
UOMI, K
CHINONE, N
HARADA, T
机构：
[1] Central Research Laboratory, Hitachi, Ltd., Tokyo
来源：
IEEE JOURNAL OF QUANTUM ELECTRONICS | 1991年 / 27卷 / 06期
关键词：
D O I：
10.1109/3.90002
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：
Narrow spectral linewidth lasers are developed for optical coherent transmission systems. To obtain a narrow spectral linewidth, a CPM (corrugation-pitch modulated) structure is introduced into 1200-mu-m long MQW-DFB (multi-quantum well distributed feedback) lasers. The CPM structure effectively suppresses the axial spatial hole burning effect and stabilized single-mode spectrum at high output powers. The narrowest spectral linewidth ever of 170 kHz is achieved at an output power of 25 mW. Details of a brand new corrugation fabrication method that makes the CPM structure possible are described.
引用
收藏
页码：1767 / 1772
页数：6
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