对光纤通信系统中的电域色散补偿(EDC)技术进行了深入研究, 利用Optisystem8.0和Matlab7.1联合搭建仿真系统平台, 分析了基于最小均方(LMS)算法的电域色散补偿性能。仿真结果表明, 滤波器参数（收敛因子, 抽头数）、系统传输特性以及调制格式对最小均方算法的收敛速度和稳态误差都有较大的影响, 要求合理选择滤波器参数和调制格式, 使电域色散补偿达到最优性能。
色散 调制格式 电域色散补偿 最小均方算法 dispersion modulation format EDC LMS algorithm
Author Affiliations
Abstract
1 College of Information Science and Engineering, Yanshan University, Qinhuangdao 066004, China
2 Key Laboratory of Information Photonics and Optical Communications, the Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China
We study an electronic compensator (EC) as a receiver for a 100-Gb/s polarization division multiplexing coherent optical orthogonal frequency division multiplexing (PDM-CO-OFDM) system without optical dispersion compensation. EC, including electrical dispersion compensation (EDC), least squares channel estimation and compensation (LSCEC), and phase compensation (PC), is used to compensate for chromatic dispersion (CD), phase noise, polarization mode dispersion (PMD), and channel impairments, respectively. Simulations show that EC is highly effective in compensating for those impairments and that the performance is close to the theoretical limitation of optical signal-to-noise rate (OSNR), CD, and PMD. Its robustness against those transmission impairments and fiber nonlinearity are also systematically studied.
CO-OFDM 偏振分级复用(PDM) 电域补偿(EC) 最小均方信道估计补偿(LSCEC) 电域色散补偿(EDC) 060.4510 Optical communications 060.1660 Coherent communications 060.2430 Fibers, single-mode Chinese Optics Letters
2011, 9(3): 030602
