Modeling and analysis of narrow-linewidth distributed feedback lasers based on apodized laterally coupled gratings

被引：2
|
作者：
Zhao, Yingming [1 ]
Li, Yu [1 ]
Huang, Weiping [1 ]
机构：
[1] Shandong Univ, Sch Informat Sci & Engn, Qingdao 266237, Peoples R China
来源：
APPLIED OPTICS | 2022年 / 61卷 / 10期
关键词：
DFB LASERS; FACET PHASES; GAIN; MODULATION; DESIGN; SHIFT;
D O I：
10.1364/AO.453285
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A physical model is demonstrated to optimize narrow-linewidth distributed feedback lasers based on apodized laterally coupled gratings (AG-DFB). The structure can effectively suppress the longitudinal spatial hole burning as well as remove the regrowth process during fabrication by using the apodized grating geometry. The studies include numerical simulations of the AG-DFB laser for its static and dynamic behaviors at different cavity lengths and facet coating conditions. The results show that the proposed device can achieve narrow linewidth, high slope efficiency, and broad modulation bandwidth, as compared to lambda/4 phase-shifted DFB lasers. (C) 2022 Optica Publishing Group
引用
收藏
页码：2610 / 2619
页数：10
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