摘要
针对限制光通信系统高速、大容量、长距离传输的光纤固有传输损伤,理论上分析了光纤非线性损伤及补偿的机理,重点介绍了偏振复用系统中基于电域光纤非线性补偿的数字背向传输(Digital Back-Propagation,DBP)的技术原理。利用经典的非线性薛定谔方程,推导出用分步傅里叶方法实现DBP的数值模拟算法,并提出最优步长的选择方案。
The inherent transmission impairment of the optical fiber restricts the high-speed and long-distance transmission of the optical fiber communication system, the mechanism of nonlinear impairment and compensation in optical fiber is analyzed theoretically. In the polarization multiplexing system, the principle of Digital backpropagation(DBP) based on the nonlinear compensation in electric domain is introduced emphatically. By using the classical nonlinear NLSE equation, the numerical simulation algorithm of DBP is deduced by split step Fourier method, and the scheme of optimal step selection is proposed.
出处
《电力信息与通信技术》
2017年第8期1-5,共5页
Electric Power Information and Communication Technology
基金
国家电网公司科技项目"基于塔内光中继技术的超长距骨干光通信系统应用研究"
关键词
数字背向传输
非线性损伤
非线性补偿
digital back-propagation
nonlinear impairment
nonlinear compensation
