Abstract:Theoretical models of envelope making and phase making of optical fiber chaotic secure communication are studied by coupling the chaotic encoding multiple-quantum-well laser systems and an optical fiber channel. Effects of the self-phase modulation of optical fiber and optical amplifier number are analyzed. The modulation and demodulation quality is analyzed and an encoding formula is demonstrated. A phase controller can be used to reduce the effect of nonlinear phase shift of fiber on the synchronization and demodulation. Finally, envelope making with a bit rate of 0.2Gbit/s and phase masking with a bit rate of 0.05Gbit/s are simulated in long-haul optical fiber secure communications at wavelength 1.55μm. The systems have good secure performances.
颜森林. 激光混沌外部调制包络隐藏及相位隐藏编码方法及其在光纤保密通信中的应用研究[J]. 电子与信息学报, 2008, 30(7): 1591-1593 .
Yan Sen-lin . Envelope Making and Phase Encoding via External Modulation and Their Applications to Optical Fiber Secure Communications. , 2008, 30(7): 1591-1593 .