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A matched compensation circuit for increase in modulation bandwidth of semiconductor lasers

Zhan Yushu Nie Wenqiang Zeng Xiaodong Shi Shunxiang (Dept. of Technical Physics, Xidian Univ., Xian, 710071)  
An important factor limiting the modulation bnadwidth of a semiconductor laser is its high frequency circuit parameters. A matched compensation circuit is designed to reduce the effects of these circuit parameters and to realize impedance match between a signal source and a semiconductor laser. Theoretical analyses and experiments show that the modulation frerquency and bandwidth can be increased greatly.
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