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The Benefit of Split Nonlinearity Compensation for Single-Channel Optical Fiber Communications

Lavery, D; Ives, D; Liga, G; Alvarado, A; Savory, SJ; Bayvel, P; (2016) The Benefit of Split Nonlinearity Compensation for Single-Channel Optical Fiber Communications. IEEE Photonics Technology Letters , 28 (17) pp. 1803-1806. 10.1109/LPT.2016.2572359. Green open access

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Abstract

In this letter, we analyze the benefit of digital compensation of fiber nonlinearity, where the digital signal processing is divided between the transmitter and the receiver. The application of the Gaussian noise model indicates that, where there are two or more spans, it is always beneficial to split the nonlinearity compensation. The theory is verified via numerical simulations, investigating the transmission of a single-channel 50-GBd polarization division multiplexed 4- and 256-ary quadrature amplitude modulation signals over 100-km standard single-mode fiber spans, using lumped amplification. It is shown, theoretically, that the signal-to-noise ratio gain for long distances and high bandwidth transmission is 1.5 dB versus transmitter-or receiver-based nonlinearity compensation.

Type: Article
Title: The Benefit of Split Nonlinearity Compensation for Single-Channel Optical Fiber Communications
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/LPT.2016.2572359
Publisher version: http://dx.doi.org/10.1109/LPT.2016.2572359
Language: English
Additional information: This work is licensed under a Creative Commons Attribution 3.0 License. For more information, see http://creativecommons.org/licenses/by/3.0/
Keywords: Coherent optical communications, quadrature amplitude modulation (QAM), nonlinearity compensation, DIGITAL BACKPROPAGATION, SYSTEMS, PROPAGATION, PRECOMPENSATION, LIMIT, MODEL, PMD
UCL classification: UCL
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/1508362
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