Performance analysis of two types of chaotic optical secure communication schemes

J4 ›› 2012, Vol. 29 ›› Issue (4): 500-506.

• Optical Communication • Previous Articles Next Articles

Performance analysis of two types of chaotic optical secure communication schemes

LIU Peiyang, ZHAO Qingchun, YIN Hongxi

Laboratory of Optical Communications and Photonic Technology, School of Information and Communication Engineering, Dalian University of Technology, Dalian 116024, China

Received:2011-06-09 Revised:2011-07-25 Published:2012-07-28 Online:2012-07-01

Abstract

Abstract:

High dimensional, broadband chaotic optical signal can be generated by a semiconductor laser with external disturbance, which is ideal carrier for high-speed secure communications. The performances of chaotic optical secure communication systems are numerically studied by encrypting the message by chaos modulation (CMO) or chaos masking (CMS).The variation of the signal-to-noise ratio (SNR) and Q-factor are demonstrated when sinusoidal message and digital message are transmitted separately by CMO or CMS. The correlation coefficient as a function of modulation depth (MD) is discussed. The results show that the system performance varies for different MD or modulation frequency/rate and the performance of CMO system is better than that of CMS.

Key words: chaotic optical communication, chaotic synchronization, chaos modulation, chaos masking, semiconductor laser

CLC Number:

TN918.6

LIU Peiyang, ZHAO Qingchun, YIN Hongxi . Performance analysis of two types of chaotic optical secure communication schemes[J]. J4, 2012, 29(4): 500-506.

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Performance analysis of two types of chaotic optical secure communication schemes

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