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Digital backpropagation accounting for polarization-mode dispersion

Czegledi, CB; Liga, G; Lavery, D; Karlsson, M; Agrell, E; Savory, SJ; Bayvel, P; (2017) Digital backpropagation accounting for polarization-mode dispersion. Optics Express , 25 (3) pp. 1903-1915. 10.1364/OE.25.001903. Green open access

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Abstract

Digital backpropagation (DBP) is a promising digital-domain technique to mitigate Kerr-induced nonlinear interference. While it successfully removes deterministic signal–signal interactions, the performance of ideal DBP is limited by stochastic effects, such as polarizationmode dispersion (PMD). In this paper, we consider an ideal full-field DBP implementation and modify it to additionally account for PMD; reversing the PMD effects in the backward propagation by passing the reverse propagated signal also through PMD sections, which concatenated equal the inverse of the PMD in the forward propagation. These PMD sections are calculated analytically at the receiver based on the total accumulated PMD of the link estimated from channel equalizers. Numerical simulations show that, accounting for nonlinear polarization-related interactions in the modified DBP algorithm, additional signal-to-noise ratio gains of 1.1 dB are obtained for transmission over 1000 km.

Type: Article
Title: Digital backpropagation accounting for polarization-mode dispersion
Open access status: An open access version is available from UCL Discovery
DOI: 10.1364/OE.25.001903
Publisher version: http://doi.org/10.1364/OE.25.001903
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/1553655
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