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光信号传输特性的研究是光通信网络仿真分析的关键问题。文中通过光传输仿真软件OpticSimu仿真分析了G.652光纤中光信号的传输特性。仿真结果表明:在不考虑非线性影响的情况下,当中心频率、发射功率和啁啾等参数相同时,传输距离越长,比特率越大,由群速度色散引起的信号失真就越明显。通过减小光源信号的初始啁啾可以降低光信号在信道中的传输失真,提高光信号的传输质量。
Optical signal transmission characteristics of the optical communication network simulation analysis of the key issues. In this paper, optical transmission simulation software OpticSimu simulation analysis of optical signals in G.652 optical transmission characteristics. Simulation results show that when the center frequency, transmit power and chirp are equal, the longer the transmission distance and the larger the bit rate, the more obvious the signal distortion caused by the group velocity dispersion without considering the nonlinear effect. By reducing the initial chirp of the light signal, the transmission distortion of the optical signal in the channel can be reduced and the transmission quality of the optical signal can be improved.