| Citation: |
ZHANG Ye-jin, ZHU Lin, GAO Zhi-guo, CHEN Ming-hua, DONG Yi, CHEN Wei-you, LIU Shi-yong, XIE Shi-zhong. Investigation of Mode and Modulation Responses in Semiconductor PS-DFB Lasers: Use of a Vector-Newton Method[J]. Journal of Semiconductors, 2002, In Press.
. Investigation of Mode and Modulation Responses in Semiconductor PS-DFB Lasers: Use of a Vector-Newton Method[J]. J. Semicond, 2002, In Press.
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Investigation of Mode and Modulation Responses in Semiconductor PS-DFB Lasers: Use of a Vector-Newton Method
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Abstract
A numerical model for steady state analysis and analytical expressions for the AM and FM modulation responses of DFB lasers are presented. The small signal modulation responses of 3 phase shift (PS) DFB is investigated for the first time. A new method (Vector Newton method) to obtain multiple longitudinal mode of DFB lasers is used. It is demonstrated that this method is suitable for obtaining multiple solution of high nonlinear equations. Longitudinal photon density distribution and multiple longitudinal mode of 3PS DFB and simple DFB lasers are analyzed. The results show that modulation response characteristics of 3PS DFB laser is as good as that of DFB, and PS can weaken the longitudinal spatial hole burning (LHSB) effect and is in favor of single longitudinal mode operating of lasers.
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Keywords:
- phase shift,
- DFB,
- vector,
- single mode,
- LHSB,
- modulation response
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References
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Proportional views
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