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Subcarrier modulation in all-optical chaotic communication systems

机译:全光混沌通信系统中的副载波调制

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摘要

The enhancement of the encryption properties of chaotic signals generated by a semiconductor laser subjectto optical feedback is numerically demonstrated by applying subcarrier modulation. The numerical analysis shows that the message can be very efficiently encrypted when the radio frequency carrier is within the frequency range where the chaos power density is maximized. Decoding performance is also numerically assessed considering both open- and closed-loop schemes at the receiver side. The impact of subcarrier modulation on system's performance under the influence of parameter mismatch is highlighted.
机译:通过应用副载波调制,在数值上证明了受到光反馈的半导体激光器产生的混沌信号的加密特性的增强。数值分析表明,当射频载波处于混沌功率密度最大的频率范围内时,可以非常有效地对消息进行加密。还考虑了在接收机端的开环和闭环方案,对数字的解码性能进行了评估。强调了在参数失配影响下副载波调制对系统性能的影响。

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