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研究了外部光注入高速多量子阱激光器激光混沌全光保密通信系统,导出系统同步方程,理论证明并数值实现了系统的同步,分析了增加反馈系数以缩短同步时间且增强系统同步稳定性的方法。研究分析了多量子阱激光器混沌隐藏和混沌键控保密通信全光调制解调系统模型,数值模拟了具有正弦调制信号的调制频率0.2 GHz混沌模拟保密通信和数字信号调制速率20 Gb/s的混沌数字保密通信以及调制速率0.05 Gb/s混沌键控保密通信的应用,系统确实具有较高的保密性能和反破译能力;分析了混沌数字信号保密通信调制带宽20 Gb/s调制解调时的同步误差以及混沌键控调制速率,系统都具有非常好的调制解调特性,且在高速混沌通信中,系统解调具有相对较小的同步误差,而1 Gb/s是混沌键控通信的速率上限。
The external laser light chaos plenoptic communication system with high speed and multi-quantum well laser is studied, and the system synchronization equation is deduced. The theoretical and numerical results show that the system synchronization is achieved by numerical simulation and the method of increasing the feedback coefficient to shorten the synchronization time and enhance the system synchronization stability . The model of all-optical modulation-demodulation system for chaos-trapped chaos-based multi-quantum well lasers and chaos-keying secure communication is studied and analyzed. The modulation of chaos with 0.2s modulation frequency of sinusoidal modulation is simulated numerically to simulate secure communication and the modulation rate of digital signal is 20 Gb / s Digital secure communication and the application of chaotic keyed secure communication with a modulation rate of 0.05 Gb / s, the system does indeed have a high degree of confidentiality and anti-deciphering ability. The synchronization of modulation and demodulation of a chaotic digital signal with a confidential bandwidth of 20 Gb / s Error and chaos keying modulation rate, the system has very good modulation and demodulation characteristics, and in high-speed chaotic communication, the system demodulation has a relatively small synchronization error, and 1 Gb / s is the upper limit of the rate of chaos-keying communication .