Analytical estimation of phase noise influence in coherent transmission system with digital dispersion equalization

被引：34
|
作者：
Xu, Tianhua [1 ,2 ,3 ]
Jacobsen, Gunnar [2 ]
Popov, Sergei [1 ]
Li, Jie [2 ]
Friberg, Ari T. [1 ]
Zhang, Yimo [3 ]
机构：
[1] Royal Inst Technol, SE-16440 Stockholm, Sweden
[2] Acreo AB, SE-16440 Kista, Sweden
[3] Tianjin Univ, Tianjin 300072, Peoples R China
来源：
OPTICS EXPRESS | 2011年 / 19卷 / 08期
关键词：
IMPAIRMENT COMPENSATION; OPTICAL-SYSTEMS; RECEIVERS; SIGNALS; FILTERS;
D O I：
10.1364/OE.19.007756
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We present a novel investigation on the enhancement of phase noise in coherent optical transmission system due to electronic chromatic dispersion compensation. Two types of equalizers, including a time domain fiber dispersion finite impulse response (FD-FIR) filter and a frequency domain blind look-up (BLU) filter are applied to mitigate the chromatic dispersion in a 112-Gbit/s polarization division multiplexed quadrature phase shift keying (PDM-QPSK) transmission system. The bit-error-rate (BER) floor in phase estimation using an optimized one-tap normalized least-mean-square (NLMS) filter, and considering the equalization enhanced phase noise (EEPN) is evaluated analytically including the correlation effects. The numerical simulations are implemented and compared with the performance of differential QPSK demodulation system. (C) 2011 Optical Society of America
引用
收藏
页码：7756 / 7768
页数：13
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