基于混沌光注入互耦合VCSELs获取高复杂度混沌同步信号的研究

Generation of Wideband and High Complex Chaos Synchronization Based on Mutually Coupled VCSELs Subject to Chaotic Optical Injection

提出了一种带光反馈的垂直腔面发射激光器(I-VCSEL)单向注入到另一个VCSEL(D-VCSEL)所产生混沌光驱动两个互耦合垂直腔面发射激光器(MC-VCSELs)获取宽带宽、高复杂度的混沌同步方案.利用自旋反转模型(SFM),数值研究了一定光注入条件下,D-VCSEL注入MC-VCSELs的强度以及MC-VCSELs之间的互注入强度对系统输出混沌信号的带宽、复杂度及同步性能的影响.结果表明:通过合理选取D-VCSEL注入到MC-VCSELs的强度以及MC-VCSELs之间的互注入强度,可有效提高耦合系统输出混沌信号的带宽和复杂度,并可同时实现MC-VCSELs之间高质量的混沌同步,且该同步对自旋反转速率γs和有源介质双折射系数γp具有较高的容忍度.

A wideband and high complex chaos synchronization system has been proposed,in which two mutually coupled vertical-cavity surface-emitting lasers(MC-VCSELs)have identically been driven by an driving VCSEL(D-VCSEL)subject to chaotic optical injection from another VCSEL with an external cavity.By adopting the spin-flip model(SFM),the effects of injection power from D-VCSEL and the mutual injection strength between two MC-VCSELs on the bandwidth,complexity and synchronization performance of the system are investigated numerically.The results show that the bandwidth and complexity of chaotic signal can be effectively improved by reasonably selecting the injection power from D-VCSEL and mutual injection strength between MC-VCSELs,and this system can achieve the high quality chaotic synchronization between two MC-VCSELs at the same time,which has high tolerance to mismatched intrinsic parameters such as the spin-flip rateγs and the linear anisotropies birefringenceγp.