On the Performance of Digital Back Propagation in Spatial Multiplexing Systems


Nonlinear performance in spatial multiplexing systems is strongly determined by the interplay between differential mode delay, linear mode coupling, and Kerr nonlinearity. In this article we review and extend the analysis of different solution methods for the linear coupling operator in the coupled nonlinear Schrödinger equation for spatial multiplexed propagation. Numerical solution methods are compared for different operational regimes as determined by differential mode delay and linear mode coupling. Finally, we review and extend the study of digital methods to mitigate the Kerr nonlinearity for arbitrary levels of random linear mode coupling. For the first time, it is shown that in spatial multiplexing systems transmission performance can be improved by reducing the number of back propagated channels for non-negligible levels of differential mode delay.

Publication DOI: https://doi.org/10.1109/JLT.2020.2975982
Divisions: Engineering & Applied Sciences > Electrical, Electronic & Power Engineering
Engineering & Applied Sciences
Engineering & Applied Sciences > Aston Institute of Photonics Technology
Additional Information: © 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Uncontrolled Keywords: Digital-back propagation,linear mode coupling,spatial division multiplexing,Atomic and Molecular Physics, and Optics
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Related URLs: https://ieeexpl ... cument/9007613/ (Publisher URL)
http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2020-05-15
Published Online Date: 2020-02-24
Accepted Date: 2020-02-01
Authors: Ferreira, Filipe Marques ( 0000-0002-1533-843X)
Sygletos, Stylianos ( 0000-0003-2063-8733)
Sillekens, Eric
Killey, Robert I.
Ellis, Andrew ( 0000-0002-0417-0547)
Doran, Nick ( 0000-0001-8309-8805)



Version: Accepted Version

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