多变量耦合实现双环掺铒光纤激光器混沌同步  

Synchronization of Chaotic Erbiun-Doped Fiber Lasers by Multivariable Unidirectionally Couple

作　　者：杨磊[1] 潘炜[1] 罗斌[1] 张伟利[1] 江宁[1] 周志[1] 杨国标[1] 

机构地区：[1]西南交通大学信息科学与技术学院,四川成都610031

出　　处：《中国激光》2008年第7期992-996,共5页Chinese Journal of Lasers

基　　金：高等学校博士学科点专项科研基金(20070613058)资助项目

摘　　要：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。Based on the theoretic modal of the erbium-doped fiber dual-ring lasers, the chaotic synchronization by using multivariable unidirectionally coupled scheme is set up. Two different fiber lasers have been investigated and the condition for realizing chaotic synchronization is given. Numerical simulation of the model is established on Simulink and results show that one of the erbium-doped fiber dual-ring lasers as the master laser drives the another slave laser, and they can be completely synchronized even though the decay rate of the two lasers are different and the larger the feedback coefficient is, the faster two lasers achieve synchronization. The feedback coefficient have relationship with decay rate and coupling coefficient. It is also shown that the initial value of the lasers cannot affect the synchronized system, the synchronization is maintained very well. And when the effects of the Gauss noises are considered in the system, they can still reach good synchronization.

关 键 词：激光技术 光纤激光器 混沌同步 耦合 

分 类 号：TN248.1[电子电信—物理电子学]