λ/4 phase-shifted distributed feedback lasers with chirped grating:: Dynamic single-mode and modulation characteristics analyses

被引：0
|
作者：
Jia, Xin-Hong [1 ]
Wu, Zheng-Mao [2 ]
Xia, Guang-Qiong [2 ]
Zhong, Dong-Zhou [3 ]
Wang, Fei [4 ]
Wu, Ha-Gui
Chen, Hai-Tao [5 ]
Wu, Jia-Gui [2 ]
机构：
[1] Sichuan Normal Univ, Sch Phys & Elect Engn, Chengdu 610068, Peoples R China
[2] Southwest Univ, Sch Phys, Chongqing 400715, Peoples R China
[3] Wuyi Univ, Sch Informat, Jiangmen 529020, Peoples R China
[4] Chongqing Inst Technol, Sch Math Scientia, Chongqing 400050, Peoples R China
[5] Chinese Peoples Armed Police Force Acad, Fundament Dept, Langfang 065000, Peoples R China
来源：
OPTOELECTRONIC MATERIALS AND DEVICES II | 2007年 / 6782卷
关键词：
lambda/4; phase-shift; distributed feedback laser diode; chirped grating; dynamic sing-mode; suppression ratio; modulation response; frequency chirp; large signal analysis;
D O I：
10.1117/12.739673
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The dynamic single-mode and modulation performance of lambda/4 phase-shifted distributed feedback laser diode with chirped grating (QWS-CG-DFB) are analyzed theoretically. The numerical simulation shows that, In contrast to purely QWS-DFB laser, the enhanced dynamic single-mode suppression ratio (SMSR) can be reached by QWS-CG-DFB laser; Under the smaller biasing current, the modulation band-width in presence of chirped grating is narrower, this difference shrinks for larger biasing current; For large signal modulation, the chirped grating is helpful to increase the output extinction ratio, but worsens the frequency chirping.
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页数：10
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