光反馈垂直腔面发射半导体激光器的混沌驱动同步在保密通信中的应用  

Application in Secret Communication of Chaos Driving Synchronization of Vertical Cavity Surface Emitting Lasers with Optical Feedback

作　　者：刘玉金[1] 张胜海[2] 杨华[2] 谭建锋[2] 

机构地区：[1]河南理工大学万方科技学院,河南焦作454003 [2]信息工程大学理学院数理系,河南郑州450001

出　　处：《中国激光》2012年第9期88-94,共7页Chinese Journal of Lasers

基　　金：国家自然科学基金(10975047);河南省基础与前沿技术研究项目(112300410305)资助课题

摘　　要：基于光反馈垂直腔面发射半导体激光器(VCSELs)混沌驱动同步,提出了一种光反馈VCSELs混沌保密通信系统。通过模拟信号和数字信号在该系统的混沌保密通信的实现,验证了该系统的可行性。进一步利用该方案实现了对文字和数字图像的保密通信,并对解密图像及原始图像灰度值的差值做了相关计算。数值模拟结果说明该通信方案具有良好的解密效果。Based on the chaos driving synchronization of vertical cavity surface emitting lasers （VCSELs） with optical feedback, the chaotic secure communication system of VCSELs with optical feedback is designed. Through the realizations of simulation signal and digital signal in the chaotic secure communication system, the feasibility of this system is verified. Besides, the secret communications of text and digital image can be well achieved by this scheme. Furthermore, the difference of image grey value between their histograms of encryption image and decryption image is calculated. Numerical simulation results show that the secret communication system has a good decryption effect.

关 键 词：非线性光学 混沌驱动同步 垂直腔面发射半导体激光器 保密通信 混沌 

分 类 号：TN248.4[电子电信—物理电子学] O415.5[理学—理论物理]