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利用延时相移反馈的方法研究了单环掺铒光纤激光器(SREDFL)的混沌产生。通过适当地调节反馈系数、相移以及延迟时间,实现了该系统混沌的产生,给出了混沌产生的方式及混沌态的参数区间。利用混沌信号驱动法研究了单环掺铒光纤激光器的混沌同步,结果表明,在适当的驱动强度下,无论被驱动系统在被驱动前处于混沌态还是周期态,都可以达到混沌同步。利用关联系数分析了混沌同步的质量。
The chaotic generation of a single-ring erbium-doped fiber laser (SREDFL) is studied by means of delayed phase shift feedback. By properly adjusting the feedback coefficient, the phase shift and the delay time, the generation of chaos in the system is realized. The way of chaos generation and the parameter interval of chaos are given. The chaotic signal driving method is used to study the chaos synchronization of single-ring erbium-doped fiber lasers. The results show that chaotic synchronization can be achieved no matter the driven system is in chaotic state or periodic state before being driven. The correlation coefficient is used to analyze the quality of chaos synchronization.