摘要
针对高速相干光通信系统,融合信号功率波形与幅相特征提出了一种大范围和高精度的色散(CD)监测技术。搭建了112 Gbit/s(28 GBaud)偏振复用正交相移键控(PDM-QPSK)仿真系统,证明了该方法的可行性并分析了监测误差。仿真结果表明,在6.4~48.0 ns/nm CD范围内,该方法实现了最大绝对误差和平均相对误差分别为62.1 ps/nm和0.0027的CD监测。
A large-scale and high-precision Chromatic Dispersion(CD)monitoring technique for high-speed coherent optical communication system is proposed,which combines the signal power waveform with amplitude and phase histograms characteristics.We conduct a simulation for 112 Gbit/s(28 GBaud)Polarization Division Multiplexing Quadrature Phase Shift Keying(PDM-QPSK)coherent optical communication system.In the simulation,the feasibility of this method is proved and the monitoring error is further analyzed.The maximum absolute estimation error of 62.1 ps/nm and the average relative error of 0.0027 are achieved in the range of 6.4 to 48.0 ns/nm.
作者
刘军
吕俊峰
李伯中
陈芳
田照宇
吴剑军
LIU Jun;LüJun-feng;LI Bo-zhong;CHEN Fang;TIAN Zhao-yu;WU Jian-jun(State Grid Information and Telecommunication Branch,Beijing 100761,China)
出处
《光通信研究》
北大核心
2020年第6期25-28,53,共5页
Study on Optical Communications
关键词
色散监测
深度神经网络
相干光通信
光性能监测
色散补偿
CD monitoring
deep-neural networks
coherent optical communication
optical performance monitoring
CD compensation
