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On the bandwidth dependent performance of split transmitter-receiver optical fiber nonlinearity compensation

Lavery, D; Maher, R; Liga, G; Semrau, D; Galdino, L; Bayvel, P; (2017) On the bandwidth dependent performance of split transmitter-receiver optical fiber nonlinearity compensation. Optics Express , 25 (4) pp. 4554-4563. 10.1364/OE.25.004554. Green open access

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Abstract

The Gaussian noise model is used to estimate the performance of three digital nonlinearity compensation (NLC) algorithms in C-band, long-haul, optical fiber transmission, when the span length and NLC bandwidth are independently varied. The algorithms are receiver-side digital backpropagation (DBP), transmitter-side DBP (digital precompensation), and Split NLC (an equal division of DBP between transmitter and receiver). For transmission over 100×100 km spans, the model predicts a 0.2 dB increase in SNR when applying Split NLC (versus DBP) to a single 32 GBd channel (from 0.4 dB to 0.6 dB), monotonically increasing with NLC bandwidth up to 1.6 dB for full-field NLC. The underlying assumptions of this model and the practical considerations for implementation of Split NLC are discussed. This work demonstrates, theoretically, that, regardless of the transmission scenario, it is always beneficial to divide NLC between transmitter and receiver, and identifies the transmission regimes where Split NLC is particularly advantageous.

Type: Article
Title: On the bandwidth dependent performance of split transmitter-receiver optical fiber nonlinearity compensation
Open access status: An open access version is available from UCL Discovery
DOI: 10.1364/OE.25.004554
Publisher version: http://dx.doi.org/10.1364/OE.25.004554
Language: English
Additional information: Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
Keywords: Science & Technology, Physical Sciences, Optics, MULTICHANNEL DIGITAL BACKPROPAGATION, ENHANCED PHASE NOISE, BACK-PROPAGATION, DISPERSION COMPENSATION, COHERENT-DETECTION, GN-MODEL, TRANSMISSION, SYSTEMS, LONG, MODULATION
UCL classification: 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/1553657
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