Exploiting Optical Chaos With Time-Delay Signature Suppression for Long-Distance Secure Communication

IEEE Photonics Journal

Yu-Zhu Liu¹  Ji-Liang Zhang¹  Jing-Ping Zhang¹  Yi-Yuan Xie¹  Gao-Feng Pan¹  Yi-Chen Ye¹  Shu-Jian Wang¹  Yong Liu² 

[1] School of Electronic and Information Engineering, Southwest University, Chongqing, China;School of Optoelectronic Information, University of Electronic Science and Technology of Chengdu, Chengdu, China;

关键词: Chaos synchronization;    chaos communication;    security;    time-delay suppression;    vertical-cavity surface-emitting lasers (VCSELs);   

DOI  :  10.1109/JPHOT.2016.2639291

来源: DOAJ

【 摘 要 】

The time-delay (TD) signature of the chaotic signal is an essential factor for eavedroppers and attackers to reconstruct the secure communication system. Based on three-cascaded vertical-cavity surface-emitting lasers (VCSELs) for TD signature suppression, we propose a novel long-distance secure communication system. We analyze the influence of the feedback time (i.e., the TD signature) on the security of the proposed system, and suppress the TD signatures of the outputs of the VCSELs under proper parameters. Based on chaos synchronization with TD signature suppression, we exploit the chaos masking encryption scheme for long-distance chaos secure communication. When four 10 Gbit/s messages transmit in 20 km single-mode fiber channel or 132 km SMF channel with dispersion compensating fiber, all bit error rates (BERs) keep smaller than 10^-9, and Q-factors are larger than 6, which illustrates that the proposed system effectively realizes long-distance chaos secure communication.

【 授权许可】

Unknown