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Fiber nonlinearity-induced penalty reduction in CO-OFDM by ANN-based nonlinear equalization

Lookup NU author(s): Dr Paul HaighORCiD

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Abstract

© 2015 Optical Society of America.We experimentally demonstrate ∼2 dB quality (Q)-factor enhancement in terms of fiber nonlinearity compensation of 40 Gb/s 16 quadrature amplitude modulation coherent optical orthogonal frequency-division multiplexing at 2000 km, using a nonlinear equalizer (NLE) based on artificial neural networks (ANN). Nonlinearity alleviation depends on escalation of the ANN training overhead and the signal bit rate, reporting ∼4 dB Q-factor enhancement at 70 Gb/s, whereas a reduction of the number of ANN neurons annihilates the NLE performance. An enhanced performance by up to ∼2 dB in Q-factor compared to the inverse Volterra-series transfer function NLE leads to a breakthrough in the efficiency of ANN.

Publication metadata

Author(s): Giacoumidis E, Le ST, Ghanbarisabagh M, McCarthy M, Aldaya I, Mhatli S, Jarajreh MA, Haigh PA, Doran NJ, Ellis AD, Eggleton BJ

Publication type: Article

Publication status: Published

Journal: Optics Letters

Year: 2015

Volume: 40

Issue: 21

Pages: 5113-5116

Print publication date: 01/11/2015

Acceptance date: 01/01/1900

ISSN (print): 0146-9592

ISSN (electronic): 1539-4794

Publisher: Optical Society of America

URL: https://doi.org/10.1364/OL.40.005113

DOI: 10.1364/OL.40.005113

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