Adaptive dispersion monitoring for polarization-multiplexed coherent optical communication systems

被引：0
|
作者：
Jiang, Lin [1 ]
Yan, Lianshan [1 ]
Yi, Anlin [1 ]
Chen, Zhiyu [1 ]
Pan, Yan [1 ]
Pan, Wei [1 ]
Luo, Bin [1 ]
机构：
[1] Center for Information Photonics and Communications, Southwest Jiaotong University, Chengdu, 610031, Sichuan
来源：
Guangxue Xuebao/Acta Optica Sinica | 2014年 / 34卷 / 11期
关键词：
Adaptive chromatic dispersion estimation; Auto-correlation function; Coherent optical communication; Constant modulus algorithm; Optical communications;
D O I：
10.3788/AOS201434.1106006
中图分类号：
学科分类号：
摘要：
An adaptive and precise chromatic dispersion (CD) estimation algorithm with a large dispersion monitoring range is proposed based on a two-stage structure for long haul coherent optical communication systems. A coarse estimation of chromatic dispersion is obtained by employing the auto correlation of signal power waveform (ACSPW). Afterwards, a precise CD value can be estimated by using the modified constant modulus (CMA) scheme. Simulation results show that the measured error value is less than 35 ps/nm by using the proposed algorithm, and the accuracy is improved about four-times compared to the conventional ACSPW algorithm. When the reference error rate is 10-2, the power penalty compared to the ACSPW algorithm is improved by 8 dB. ©, 2014, Chinese Optical Society. All right reserved.
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页数：5
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