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Rate Equation Analysis of High Speed Q-Modulated Semiconductor Laser

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3 Author(s)
Dekun Liu ; State Key Lab. of Modern Opt. Instrum., Zhejiang Univ., Hangzhou, China ; Lei Wang ; Jian-Jun He

Dynamic response of a Q-modulated semiconductor laser is simulated based on a rate equation model. Numerical results from both small-signal and large-signal analyses show that the Q-modulation has much higher bandwidth limit and smaller wavelength chirp than the direct modulation. It is shown that a high-extinction-ratio, low-chirp modulation of 40 GHz RZ signal can be achieved and the effects of various parameters on the Q-modulation are discussed. In addition to high-speed communications, the Q-modulated laser is particularly suitable for microwave carrier generation in radio-over-fiber systems.

Published in:

Journal of Lightwave Technology  (Volume:28 ,  Issue: 21 )