By analyzing the direct frequencymodulation and optical feedback effect of laser diode, a theoretical model for measuring small vibration displacement and velocity is discussed.
分析了在直接频率调制下，激光二极管中的光反馈效应，探讨了振动微小位移和速度的理论模型。
2
The influence of bias current and modulationfrequency on chaos dynamics of vertical-cavity surface-emitting laser (VCSEL) subject to direct current modulation is investigated by numerical simulation.
It is made clear through the theoretical analysis that the frequency shift is dependent on the modulationfrequency, thermal time constant, bias current of the laser diode and so on.