| 两类混沌激光保密通信方案的性能分析 |
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| 引用本文： | 刘培洋,赵清春,殷洪玺.两类混沌激光保密通信方案的性能分析[J].量子电子学报,2012,29(4):500-506. |
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| 作者姓名： | 刘培洋 赵清春 殷洪玺 |
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| 作者单位： | 大连理工大学信息与通信工程学院光通信与信息光子技术实验室，辽宁 大连 116024 |
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| 基金项目： | 国家自然科学基金(61071123,60772001)、区域光纤通信网与新型光通信系统国家重点实验室(北京大学)开放基金和大连理工大学引进人才基金资助项目 |
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| 摘 要： | 半导体激光器在外加扰动下，可以产生高维宽带的混沌激光信号，是实现高速保密通信的理想载波。本文数值研究了混沌调制和混沌隐藏两种信息加载方式下的混沌激光保密通信系统的性能，分析了两种信息加载方式下系统分别传输正弦信息和数字信息时的信噪比和Q因子的变化情况，研究了两种信息加载方式下系统的相关系数随调制深度的变化趋势。结果表明，不同的调制深度或调制频率/速率都会影响系统的性能，且混沌调制方式的系统性能优于混沌隐藏方式。
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| 关 键 词： | 光通信 混沌同步 混沌调制 混沌隐藏 半导体激光器 |
| 收稿时间： | 2011/6/9 |
| 修稿时间： | 2011-07-25 |
Performance analysis of two types of chaotic optical secure communication schemes |
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| LIU Pei-yang
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ZHAO Qing-chun
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YIN Hong-xi.Performance analysis of two types of chaotic optical secure communication schemes[J].Chinese Journal of Quantum Electronics,2012,29(4):500-506. |
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| Authors: | LIU Pei-yang ZHAO Qing-chun YIN Hong-xi |
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| Affiliation: | Laboratory of Optical Communications and Photonic Technology, School of Information and Communication Engineering, Dalian University of Technology, Dalian 116024, China |
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| Abstract: | High dimensional, broadband chaotic optical signal can be generated by a semiconductor laser with external disturbance, which is an 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 and digital messages 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. |
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| Keywords: | optical communication chaotic synchronization chaos modulation chaos masking semiconductor laser |
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