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Digital backpropagation accounting for polarization-mode dispersion

Authors :
Erik Agrell
Cristian Bogdan Czegledi
Seb J. Savory
Gabriele Liga
Polina Bayvel
Magnus Karlsson
Domanic Lavery
Savory, Seb [0000-0002-6803-718X]
Apollo - University of Cambridge Repository
Publication Year :
2019
Publisher :
Apollo - University of Cambridge Repository, 2019.

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.<br />Swedish Research Council (VR) (2012-5280); UK Engineering and Physical Sciences Research Council (EPSRC) (EP/J017582/1, UNLOC).

Details

Database :
OpenAIRE
Accession number :
edsair.doi.dedup.....1c0ce58d836288bb49862b74a9b92ed7
Full Text :
https://doi.org/10.17863/cam.38241