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本文建立了外部光注入半导体激光器的同步系统误差方程 ,实现了外部光注入波长 1 31μm分布反馈激光器的两个激光混沌系统的同步 ,其同步误差几乎为零 .成功数值模拟了该同步系统在长距离光纤传输中的同步 ,其同步误差随着传输距离而增加 ,光纤的自相位调制是限制激光混沌在光纤传输中同步的主要原因 ,分析了这种传输的极限 ,讨论了在不同传输距离上的强度噪声和相位噪声对同步误差的影响 .在长距离光纤模拟和数字保密通信中应用的数值模拟表明 ,无论是在时域还是在频域 ,信息在混沌中都难以分离 ,确具有很高的保密性能和反破译能力
In this paper, we establish the synchronization system error equation of the external light-implanted semiconductor laser, and realize the synchronization of two laser chaotic systems with external light injection wavelength of 131μm distributed feedback laser, and the synchronization error is almost zero. The numerical simulation of the synchronization system in long The synchronization error of optical fiber transmission increases with the transmission distance. The self-phase modulation of optical fiber is the main reason that limits the synchronization of laser chaos in optical fiber transmission. The limit of this transmission is analyzed. The influence of intensity noise and phase noise on the synchronization error.The numerical simulation used in long-distance optical fiber analog and digital secure communication shows that the information is hard to be separated in the chaos, both in the time domain and in the frequency domain, Confidentiality and anti-deciphering ability