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The optimal loop gain design for the spectral linewidth reduction in an electrical feedback semiconductor laser

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1 Author(s)
Linlin Li ; Dept. of Electron., Zhengzhou Univ., Henan, China

The design of the optimal feedback loop gain for the spectral linewidth reduction in a semiconductor laser with electrical feedback is presented using a model of self-heterodyne type electrical feedback. The results show that the feedback loop gain must be suitably chosen to satisfy the requirement of narrowing linewidth. Due to the influence of AM noise in the feedback process, there is an optimal value for the feedback loop gain to reduce the linewidth for a given feedback condition. The influence of other feedback parameters on the linewidth reduction is also presented

Published in:

Quantum Electronics, IEEE Journal of  (Volume:27 ,  Issue: 8 )

Date of Publication:

Aug 1991

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