大信号调制下VCSEL非线性特性的研究

he model of the vertical cavity surface emitting laser (VCSEL) was established by SIMULINK and the influences of some certain parameters (aperture and thickness of active region, modulation frequency , bias current and spontaneous emission factor) on the high frequency and large signal modulation response are studied. The result shows normalized peak photon density undergoes the regions of single, double and single period with increasing the modulation index. VCSEL with small aperture and thickness of active region has better immunity to irregular modulation response, and we can achieve the same effect by increasing modulation frequency or spontaneous emission factor. But the bias current has little effect on modulation response. The simulation results are agree with the experimental results reported in document