提出双环单模掺铒光纤激光器激光混沌耦合反馈相移控制方法和物理模型,利用耦合器将系统的输出量反馈到系统中,选取适当的反馈系数,并在反馈通道上加入相移控制器PC控制反馈光的相移,通过对反馈系数和反馈光相移的控制,实时、动态、有效地控制激光混沌到稳定态和周期态;分析了系统输出状态随着控制参数变化的演化规律,控制参数的变化可以使得系统的输出产生丰富的有一定规律性的激光动力学现象;讨论了混沌被控制到单周期态时系统输出的振荡周期的变化规律与控制量的关系。

Method of chaos control by coupling-feedback phase-shift and its physical model are presented for dual-ring single-mode erbium-doped fiber lasers. The coupler feeds the output back with phase-shift controller controlling the phase of feedback,and selecting apt feedback coefficient,laser chaos can be controlled into stable state or periodic state in real-time,dynamically and effectively. The evolution of system’s output state is analyzed when the control coefficient is changed,and the output of the system can produce rich laser dynamics phenomena with certain regularity. Relationship between vibration period of the system and control variables is discussed when chaos is controlled into single periodic state.