CUED Publications database

Digital backpropagation accounting for polarization-mode dispersion

Czegledi, CB and Liga, G and Lavery, D and Karlsson, M and Agrell, E and Savory, SJ and Bayvel, P (2017) Digital backpropagation accounting for polarization-mode dispersion. Optics Express, 25. pp. 1903-1915.

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� 2017 Optical Society of America. Digital backpropagation (DBP) is a promising digital-domain technique to mitigate Kerr-induced nonlinear interference. While it successfully removes determinis tic 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.

Item Type: Article
Divisions: Div B > Photonics
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:11
Last Modified: 14 Jun 2018 01:47