摘要
设计了一种高速偏振复用相干光正交频分复用系统,利用MATLAT和Optisystem仿真完成了光信号的高速长距离传输。由于光信号在进行长距离传输时,受色散、非线性、相位噪声等影响较大,在系统仿真研究时重点分析了色散、导频信号等参数对该系统性能的影响。仿真结果表明加入负色散系数的色散补偿光纤并采用基于导频的信道估计后,传输150 km的系统误码率仅为10-7,系统性能明显得到改善。该方案不仅提高了光通信系统的传输速率,且频谱利用率高、误码率低,非常适用于光纤通信大容量、长距离传输的要求。
A high-speed polarization multiplexing coherent optical orthogonal frequency division multiplexing system is designed. The high-speed long-distance transmission of optical signals is completed by MATTAT and Optisystem simulation. Since the optical signal is affected by dispersion, nonlinearity and phase noise during long-distance transmission, the influence of parameters such as dispersion and pilot signal on the performance of the system is analyzed in the system simulation research. The simulation results show that after adding the dispersion-compensated fiber with negative dispersion coefficient and using pilot-based channel estimation, the system error rate of transmitting 150 km is only 10-7, and the system performance is obviously improved. The scheme not only improves the transmission rate of the optical communication system, but also has high spectrum utilization rate and low bit error rate, and is very suitable for the requirements of large-capacity and long-distance transmission of optical fiber communication.
作者
刘皎
何建强
Liu Jiao;He Jianqiang(Electronic Information and Electrical College of Engineering,Shangluo University,Shangluo 726000,China)
出处
《电子测量技术》
2019年第19期137-141,共5页
Electronic Measurement Technology
基金
2018年第一批产学合作协同育人项目(201801082072)资助
关键词
相干光正交频分复用
色散
导频
信道估计
coherent optical orthogonal frequency division multiplexing
dispersion
pilot
channel estimation
