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提出了双环掺铒光纤激光器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可以实时、动态、有效地控制激光混沌到稳定态和周期态;结合混沌耦合反馈相移控制方法和物理模型,建立了该控制模型的动力学方程;运用数值计算分析了系统输出状态随着控制参数变化的演化规律,表明控制参数反馈系数和反馈光相移的变化可以使系统的输出产生丰富的具有一定规律性的激光动力学现象;最后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,在选取适当的控制参数,快速达到所需输出状态时,可以充分利用这一关系。
The control method and physical model of chaotic coupling feedback phase shift of double-ring erbium-doped fiber laser are proposed. The output of the system is fed back to the system by the coupler, the appropriate feedback coefficient is selected, and the PC feedback By controlling the phase shift of the feedback coefficient and feedback light, the laser chaos can be controlled in real time, dynamically and effectively to the steady state and the periodic state. Combining with the chaotic coupled feedback phase shift control method and the physical model, the control model The numerical simulation results show that the output state of the system evolves with the variation of the control parameters. It is shown that the variation of the feedback parameters and the feedback phase shift can make the output of the system produce rich and regular laser dynamics In the end, we discuss the relationship between the variation of the oscillation period and the amount of control when the chaos is controlled to the single-cycle state. This relationship can be fully utilized when the appropriate control parameters are selected and the desired output state is reached quickly.