Mitigation of nonlinear interference noise introduced by cross-phase modulation in the dual-polarization 16 QAM wavelength-division multiplexing coherent optical system

Bo Zhang; Bo Liu; Lijia Zhang; Xiangjun Xin; Ru Zhang; Qi Zhang; Feng Tian; Yongjun Wang; Qinghua Tian; Lan Rao; Yuhan Guo

doi:10.1117/1.OE.56.5.056109

27 May 2017 Mitigation of nonlinear interference noise introduced by cross-phase modulation in the dual-polarization 16 QAM wavelength-division multiplexing coherent optical system

Bo Zhang, Bo Liu, Lijia Zhang, Xiangjun Xin, Ru Zhang, Qi Zhang, Feng Tian, Yongjun Wang, Qinghua Tian, Lan Rao, Yuhan Guo

Author Affiliations +

Optical Engineering, Vol. 56, Issue 5, 056109 (May 2017). https://doi.org/10.1117/1.OE.56.5.056109

Abstract

A complex adaptive equalizer using a least-mean-square (LMS) algorithm is proposed to mitigate the effect of nonlinear interference induced by cross-phase modulation in wavelength-division multiplexing (WDM) coherent optical systems. We show the effect of nonlinear interference is equivalent to slow time-varying intersymbol interference. Simulations of dual-polarization 16 quadrature amplitude modulation (QAM) WDM systems are conducted to test the effectiveness of our proposed compensation method. The consequences show that significant improvement in system performance can be achieved by using the adaptive LMS equalization method.

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Bo Zhang, Bo Liu, Lijia Zhang, Xiangjun Xin, Ru Zhang, Qi Zhang, Feng Tian, Yongjun Wang, Qinghua Tian, Lan Rao, and Yuhan Guo "Mitigation of nonlinear interference noise introduced by cross-phase modulation in the dual-polarization 16 QAM wavelength-division multiplexing coherent optical system," Optical Engineering 56(5), 056109 (27 May 2017). https://doi.org/10.1117/1.OE.56.5.056109

Received: 18 January 2017; Accepted: 26 April 2017; Published: 27 May 2017

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