Title :
Rate Equation Analysis of High Speed Q-Modulated Semiconductor Laser
Author :
Liu, Dekun ; Wang, Lei ; He, Jian-Jun
Author_Institution :
State Key Lab. of Modern Opt. Instrum., Zhejiang Univ., Hangzhou, China
Abstract :
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.
Keywords :
microwave photonics; optical communication equipment; optical modulation; semiconductor lasers; frequency 40 GHz; high extinction ratio modulation; high speed Q-modulated semiconductor laser; low chirp modulation; microwave carrier generation; radio-over-fiber system; rate equation analysis; return-to-zero signal; Chirp; Extinction ratio; Modulation; Oscillators; Photonics; Surface emitting lasers; Modulation; rate equations; semiconductor lasers;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2010.2077671
