Digital back propagation based on the feedback-convergence for fiber nonlinearity compensation with low computational complexity and high performance

Chuxuan Wang; Feng Tian; Yongjun Wang; Qi Zhang; Qinghua Tian; Ran Gao; Xishuo Wang; Xiaolong Pan; Leijing Yang; Xiangjun Xin

doi:10.1016/j.optcom.2020.126050

Digital back propagation based on the feedback-convergence for fiber nonlinearity compensation with low computational complexity and high performance

Chuxuan Wang
, Feng Tian^*
, Yongjun Wang
, Qi Zhang
, Qinghua Tian
, Ran Gao
, Xishuo Wang
, Xiaolong Pan
, Leijing Yang
, Xiangjun Xin

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

In this paper, an improved digital back propagation (DBP) method is proposed for the compensation of fiber non-linearity, which is based on the feedback-convergence assisted split-step Fourier method. The algorithm has been experimentally verified in a 1000 km 80 Gbit/s PDM-16QAM system. By optimizing the structure of nonlinear convergence within the DBP method, the accuracy of nonlinear compensation is improved comparing with the traditional algorithms while complexity reduced. The results show that the OSNR penalty for BER of HD-FEC threshold has reduced by 1.1 dB, and the transmission distance can be increased by ∼155 km for the threshold value of BER=1×10⁻⁴ compared to the traditional DBP method. When OSNR = 26 dB, the complexity of FC-DBP decreases 36.91% comparing with the traditional DBP method.

Original language	English
Article number	126050
Journal	Optics Communications
Volume	471
DOIs	https://doi.org/10.1016/j.optcom.2020.126050
Publication status	Published - 15 Sept 2020
Externally published	Yes

Keywords

DBP
Feedback-convergence
Nonlinear compensation

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10.1016/j.optcom.2020.126050

Cite this

@article{06f8b77f510f439c9396962f5d53c2a5,

title = "Digital back propagation based on the feedback-convergence for fiber nonlinearity compensation with low computational complexity and high performance",

abstract = "In this paper, an improved digital back propagation (DBP) method is proposed for the compensation of fiber non-linearity, which is based on the feedback-convergence assisted split-step Fourier method. The algorithm has been experimentally verified in a 1000 km 80 Gbit/s PDM-16QAM system. By optimizing the structure of nonlinear convergence within the DBP method, the accuracy of nonlinear compensation is improved comparing with the traditional algorithms while complexity reduced. The results show that the OSNR penalty for BER of HD-FEC threshold has reduced by 1.1 dB, and the transmission distance can be increased by ∼155 km for the threshold value of BER=1×10−4 compared to the traditional DBP method. When OSNR = 26 dB, the complexity of FC-DBP decreases 36.91\% comparing with the traditional DBP method.",

keywords = "DBP, Feedback-convergence, Nonlinear compensation",

author = "Chuxuan Wang and Feng Tian and Yongjun Wang and Qi Zhang and Qinghua Tian and Ran Gao and Xishuo Wang and Xiaolong Pan and Leijing Yang and Xiangjun Xin",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",

year = "2020",

month = sep,

day = "15",

doi = "10.1016/j.optcom.2020.126050",

language = "English",

volume = "471",

journal = "Optics Communications",

issn = "0030-4018",

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}

TY - JOUR

T1 - Digital back propagation based on the feedback-convergence for fiber nonlinearity compensation with low computational complexity and high performance

AU - Wang, Chuxuan

AU - Tian, Feng

AU - Wang, Yongjun

AU - Zhang, Qi

AU - Tian, Qinghua

AU - Gao, Ran

AU - Wang, Xishuo

AU - Pan, Xiaolong

AU - Yang, Leijing

AU - Xin, Xiangjun

PY - 2020/9/15

Y1 - 2020/9/15

N2 - In this paper, an improved digital back propagation (DBP) method is proposed for the compensation of fiber non-linearity, which is based on the feedback-convergence assisted split-step Fourier method. The algorithm has been experimentally verified in a 1000 km 80 Gbit/s PDM-16QAM system. By optimizing the structure of nonlinear convergence within the DBP method, the accuracy of nonlinear compensation is improved comparing with the traditional algorithms while complexity reduced. The results show that the OSNR penalty for BER of HD-FEC threshold has reduced by 1.1 dB, and the transmission distance can be increased by ∼155 km for the threshold value of BER=1×10−4 compared to the traditional DBP method. When OSNR = 26 dB, the complexity of FC-DBP decreases 36.91% comparing with the traditional DBP method.

AB - In this paper, an improved digital back propagation (DBP) method is proposed for the compensation of fiber non-linearity, which is based on the feedback-convergence assisted split-step Fourier method. The algorithm has been experimentally verified in a 1000 km 80 Gbit/s PDM-16QAM system. By optimizing the structure of nonlinear convergence within the DBP method, the accuracy of nonlinear compensation is improved comparing with the traditional algorithms while complexity reduced. The results show that the OSNR penalty for BER of HD-FEC threshold has reduced by 1.1 dB, and the transmission distance can be increased by ∼155 km for the threshold value of BER=1×10−4 compared to the traditional DBP method. When OSNR = 26 dB, the complexity of FC-DBP decreases 36.91% comparing with the traditional DBP method.

KW - DBP

KW - Feedback-convergence

KW - Nonlinear compensation

UR - https://www.scopus.com/pages/publications/85084177267

U2 - 10.1016/j.optcom.2020.126050

DO - 10.1016/j.optcom.2020.126050

M3 - Article

AN - SCOPUS:85084177267

SN - 0030-4018

VL - 471

JO - Optics Communications

JF - Optics Communications

M1 - 126050

ER -

Digital back propagation based on the feedback-convergence for fiber nonlinearity compensation with low computational complexity and high performance

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Keywords

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