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Impact of Interchannel Nonlinearities on a Split-Step Intrachannel Nonlinear Equalizer

Savory, SJ; Gavioli, G; Torrengo, E; Poggiolini, P; (2010) Impact of Interchannel Nonlinearities on a Split-Step Intrachannel Nonlinear Equalizer. IEEE PHOTONIC TECH L , 22 (10) 673 - 675. 10.1109/LPT.2010.2043837.

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Abstract

We experimentally investigate the use of split-step intrachannel nonlinear equalizer, for a wavelength-division-multiplexed (WDM) 112-Gb/s nonreturn-to-zero polarization-division-multiplexed quadri-phase-shift keying system using a digital coherent receiver. Our investigations demonstrate that the nonlinear compensation algorithm can increase the reach by 23% in a 100-GHz spacing WDM link compared to 46% for the single-channel case. When the channel spacing is reduced to 50 GHz, the reach improvement is minimal due to the uncompensated interchannel nonlinearities; nevertheless, the system robustness is improved as the system operating power dynamic range is widened by 2 dB.

Type: Article
Title: Impact of Interchannel Nonlinearities on a Split-Step Intrachannel Nonlinear Equalizer
DOI: 10.1109/LPT.2010.2043837
Keywords: Nonlinear mitigation, polarization-division- multiplexing quadri-phase-shift keying (PDM-QPSK), wavelength-division-multiplexing (WDM), DIGITAL COHERENT RECEIVER, COMPENSATION, DISPERSION
UCL classification: UCL > School of BEAMS > Faculty of Engineering Science
UCL > School of BEAMS > Faculty of Engineering Science > Electronic and Electrical Engineering
URI: http://discovery.ucl.ac.uk/id/eprint/125238
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