提出双环单模掺铒光纤激光器激光混沌相移控制方法以及物理模型,数值计算出该激光器的最大李亚谱诺夫(lyapunov)指数,分析了光耦合器耦合系数对激光由分岔进入混沌的动力学行为的影响。说明了相移控制器是通过控制电光相位调制器外调制电压来控制相移,从而实现控制激光光场相位以控制偏振耦合效应,最终实现了控制激光混沌动力学行为;单相移混沌控制方法能实时、动态、有效地控制激光混沌到稳定态和周期态;双相移混沌控制方法则可以灵活改变两个相移控制器的相位,也能实时、动态、有效地控制激光混沌到稳定态和周期态,并能进一步产生多种丰富的激光动力学行为现象。

Method of chaos controlled by phase-shift and its physical model are presented for dual-ring single erbium-doped fiber lasers. The maximum Lyapunov exponent is numerically calculated to analyze the effect of the coupler′s coupling coefficient on kinetic behavior from bifurcation into chaos in the laser. The phase-shift controller is explained by controlling external-modulation-voltage of electro-optical phase-modulator. The method can adjust the optical field phase to control the polarization-coupling effect to control laser chaos kinetic behavior. Single-phase-shift can control real-time dynamically effectively laser chaos into stable states and periodic states. Dual-phase-shift can also control real-time dynamically effectively laser chaos into stable states and periodic states by adjusting flexibly phase shifts of two phase-shift controllers. And it can produce a lot of laser kinetic phenomena.