非简并光学参变振荡器的同步特性研究  

Synchronization of Nondegenerate Optical Parametric Oscillator

作　　者：高申艳[1] 郭奇志[1] 

机构地区：[1]上海大学理学院物理系,上海200444

出　　处：《光学学报》2011年第5期179-185,共7页Acta Optica Sinica

基　　金：上海市重点学科建设项目(S30105)资助课题

摘　　要：研究了非简并光学参变振荡器系统的混沌和超混沌同步特性。利用单向耦合驱动法实现了两个非简并光学参变振荡器的混沌和超混沌相位同步,分别研究驱动系统处于混沌态和超混沌态的情况,通过计算机仿真得出响应系统的最大李雅普诺夫(Lyapunov)指数谱,得到了不同情况下实现同步的耦合常数取值范围。另外,分别通过信号光、闲频光及双模单向耦合法进行混沌和超混沌同步研究,通过李雅普诺夫指数谱的对比,得出信号光耦合方式优于闲频光耦合,双模耦合能够优化混沌同步结果。系统的相图、时间序列图很好地验证了非简并光学参变振荡器的混沌以及超混沌同步结果。The chaotic and hyper-chaotic synchronization of non-degenerate optical parametric oscillators are investigated.The chaotic and hyper-chaotic synchronization of two non-degenerate optical parametric oscillators are realized by using unidirectional coupling driving method.When driving system is in chaotic and hyper-chaotic state respectively,it is got the range of the coupling constant to achieve chaotic synchronization in different states by using the chart of maximum condition Lyapunov exponent spectrum.Besides,by using idle-wave,signal-wave and two-mode coupling different results are got.It is got that signal-wave coupling is better than idle coupling,and two-mode coupling can optimize the chaotic synchronization.The synchronization results are perfectly verified by phase diagram and time series charts of the systems.

关 键 词：非线性光学 非简并光学参变振荡器 混沌同步 超混沌同步 

分 类 号：O437[机械工程—光学工程]