Design of chirped-coupling sidewall Bragg gratings for narrow linewidth distributed feedback lasers

被引：11
|
作者：
Di Gaetano, Eugenio [1 ]
Sorel, Marc [1 ]
机构：
[1] Univ Glasgow, Sch Engn, Glasgow, Lanark, Scotland
来源：
OPTICS LETTERS | 2019年 / 44卷 / 07期
关键词：
MODE-OPERATION; DFB LASERS;
D O I：
10.1364/OL.44.001642
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A chirped-coupling sidewall Bragg grating is proposed to mitigate the nonlinear effects that deteriorate the linewidth in DFB lasers operating at a high power and current regime. This novel grating geometry is analyzed and simulated to extract the optimal design parameters in terms of intra-cavity field distribution. Compared to lasers with uniform Bragg gratings, devices fabricated with a chirped-coupling grating are shown to operate in stable single mode operation over a wider current and power range and exhibit linewidth as narrow as 100 kHz. (C) 2019 Optical Society of America
引用
收藏
页码：1642 / 1645
页数：4
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