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Proceedings Paper

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

The dynamic single-mode and modulation performance of λ/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.

Paper Details

Date Published: 19 November 2007
PDF: 10 pages
Proc. SPIE 6782, Optoelectronic Materials and Devices II, 678217 (19 November 2007); doi: 10.1117/12.739673
Show Author Affiliations
Xin-Hong Jia, Sichuan Normal Univ. (China)
Zheng-Mao Wu, Southwest Univ. (China)
Guang-Qiong Xia, Southwest Univ. (China)
Dong-Zhou Zhong, Wuyi Univ. (China)
Fei Wang, Chongqing Institute of Technology (China)
Jia-Gui Wu, Southwest Univ. (China)
Hai-Tao Chen, The Chinese People's Armed Police Force Academy (China)


Published in SPIE Proceedings Vol. 6782:
Optoelectronic Materials and Devices II
Yoshiaki Nakano, Editor(s)

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