Performance comparison between digital back propagation (DBP) and pilot-aided. method for fiber nonlinearity compensation in different fiber links

被引：1
|
作者：
Zhang, Fangzheng [1 ]
Li, Yan [1 ]
Wu, Jian [1 ]
Li, Wei [1 ]
Lin, Jintong [1 ]
机构：
[1] Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China
来源：
OPTIK | 2013年 / 124卷 / 18期
关键词：
Coherent optical communications; Wavelength-division-multiplexing (WDM); Fiber nonlinearity compensation; Digital backward propagation (DBP); Pilot-aided; CHROMATIC DISPERSION; COHERENT RECEIVER;
D O I：
10.1016/j.ijleo.2012.12.003
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We numerically investigate and compare the performance of fiber nonlinearity compensation using digital back propagation (DBP) method and pilot-aided method in coherent optical transmission systems using different fiber links. Simulations for wavelength division multiplexed (WDM) 112 Gb/s polarization division multiplexed quadrature phase shift keying (PDM-QPSK) systems with dispersion unmanaged (no DM) and dispersion managed (DM) fiber links are implemented. System Q-factor and maximum transmission distance at bit error rate (BER) of 3.8 x 10(-3) are calculated for performance comparison. The results show that, for system with no DM fiber link, DBP method outperforms pilot-aided method, because DBP method has better performance for intra-channel fiber nonlinearity compensation. However, for system with DM fiber link where inter-channel fiber nonlinearity plays an important role, pilot-aided method performs better than DBP method, because of its ability for inter-channel fiber nonlinearity compensation. (C) 2013 Published by Elsevier GmbH.
引用
收藏
页码：3558 / 3561
页数：4
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