双环掺铒光纤激光器混沌的耦合反馈相移控制  

Dual-ring erbium-doped fiber laser chaos controlled by coupling feedback phase-shift

作　　者：吴飞[1] 贾莉[1] 张跃宾[1] 王晓明[1] 张凯萱[1] 

机构地区：[1]燕山大学电气工程学院,河北秦皇岛066004

出　　处：《红外与激光工程》2012年第4期895-900,共6页Infrared and Laser Engineering

基　　金：国家自然科学基金(60377002);河北自然科学基金(F2010001309)

摘　　要：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。A means of chaos controlled by coupling-feedback phase-shift and its physical model were presented for dual-ring single erbium-doped fiber lasers.The coupler fed the output back and the laser chaos could be controlled into period state in real-time,dynamically and effectively by selecting appropriate feedback coefficient and using phase-shift controller which controls the phase of feedback.The dynamics equations were established after combining the method and the physical model.The evolution rule of system′s output state as the feedback coefficient and the phase of feedback changes in the whole domain controlling coefficient changes were also analyzed through numerical calculation.This evolution law indicates that the output of system can come into being abundant and regular laser kinetic phenomenon.The relationship between the oscillation period of system and feedback coefficient as well as phase of feedback controls parameters when chaos was single period state was discussed.This can be used adquately in order to control the output of system into the state expected quickly under proper control parameters.

关 键 词：混沌反馈相移控制 掺铒光纤激光器 相移 耦合反馈 

分 类 号：TN248[电子电信—物理电子学]