基于非对称互注入VCSELs的双向双信道混沌保密通信研究

Bidirectional Dual-channel Chaos Secret Communication Based on Unsymmetrically Mutual Injected VCSELs

基于非对称互注入垂直腔面发射激光器(VCSELs)中两对应的线偏振模式间的混沌同步,提出了一种可实现双向双信道混沌保密通信的系统模型,并对该系统的混沌同步特性及通信性能进行了数值分析。研究结果表明,当互注入VCSELs中两个方向的注入光强度相差较大时,两个激光器相应的线偏振模式间能获得高质量的超前—滞后混沌同步。激光器内部参数失配对系统的同步质量有一定的影响,但系统对激光器间的参数失配有较好的容忍性。采用混沌隐藏(CMS)编码方式,成功实现了1Gbit/s信息的双向双信道保密通信。

Based on the chaos synchronization between two corresponding linear polarization modes of unsymmetricallymutual injected VCSELs, a bidirectional dual-channel chaos secret communication system isproposed. And the chaos synchronization characteristics and communication performances are theoreticallyinvestigated. The results show that, when using extremely unsymmetrical bidirectional injection, highqualityleader-lager synchronization can be obtained for each pairs of linear polarization modes and the totalintensities. The synchronization performances preserve a certain extent tolerance to intrinsic mismatchedparameters. Based on the chaos synchronization, 1 Gbit/s bidirectional dual-channel communication havebeen preliminarily examined under chaos masking （CMS） encryption method.