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根据双环掺铒光纤激光器的理论模型,提出多变量单向耦合法实现混沌同步,对主从系统模型进行数学推导,研究不同参数条件下双环掺铒光纤激光器的混沌同步,得到实现混沌同步的条件,并在Simulink平台下动态仿真。结果表明,衰减系数不同的两个双环掺铒光纤激光器,主激光器通过定向耦合器驱动从激光器,主从系统可以实现精确混沌同步,且随着反馈强度的增大,实现系统混沌同步的时间越短,反馈强度的取值范围由衰减系数和耦合系数确定;选取不同的系统初值,主从系统可实现混沌同步,系统初值对达到混沌同步时间的影响可忽略不计;在主从系统中引入随机高斯噪声,主从系统仍可实现较好的混沌同步。
According to the theoretical model of erbium-doped fiber double-ring laser, a multivariate one-way coupling method is proposed to realize the synchronization of the chaos. The mathematical model of the master-slave system is deduced and the chaos synchronization of the erbium-doped fiber laser with different parameters is studied. , And simulate dynamically under Simulink platform. The results show that the two double-ring erbium-doped fiber lasers with different attenuation coefficients can achieve accurate synchronization of chaos synchronization with the laser driven by directional coupler and the master-slave system. With the increase of feedback intensity, the time of chaotic synchronization The range of short and feedback intensity is determined by the attenuation coefficient and the coupling coefficient. Choosing different initial values of the system, the master-slave system can realize the synchronization of chaos. The influence of the initial value of the system on the chaos synchronization time is negligible. In the master-slave system The introduction of random Gaussian noise, the master-slave system can still achieve better synchronization of chaos.