Overcoming degradation in spatial multiplexing systems with stochastic nonlinear impairments

Ferreira, Filipe, Sánchez, Christian, Sygletos, Stylianos and Ellis, Andrew D. (2018). Overcoming degradation in spatial multiplexing systems with stochastic nonlinear impairments. Scientific Reports, 8 ,

Abstract

Single-mode optical fibres now underpin telecommunication systems and have allowed continuous increases in traffic volume and bandwidth demand whilst simultaneously reducing cost- and energy-per-bit over the last 40 years. However, it is now recognised that such systems are rapidly approaching the limits imposed by the nonlinear Kerr effect. To address this, recent research has been carried out into mitigating Kerr nonlinearities to increase the nonlinear threshold and into spatial multiplexing to offer additional spatial pathways. However, given the complexity associated with nonlinear transmission in spatial multiplexed systems subject to random inter-spatial-path nonlinearities it is widely believed that these technologies are mutually exclusive. By investigating the linear and nonlinear crosstalk in few-mode fibres based optical communications, we numerically demonstrate, for the first time, that even in the presence of significant random mixing of signals, substantial performance benefits are possible. To achieve this, the impact of linear mixing on the Kerr nonlinearities should be taken into account using different compensation strategies for different linear mixing regimes. For the optical communication systems studied, we demonstrate that the performance may be more than doubled with the appropriate selection of compensation method for fibre characteristics which match those presented in the literature.

Publication DOI: https://doi.org/10.1038/s41598-018-35893-4
Dataset DOI: https://doi.org/10.17036/researchdata.aston.ac.uk.00000336
Divisions: Engineering & Applied Sciences
Engineering & Applied Sciences > Electrical, electronic & power engineering
Engineering & Applied Sciences > Institute of Photonics
Additional Information: This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. Funding: EPSRC EP/L000091/1-PEACE
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Related URLs: https://www.nat ... 598-018-35893-4 (Publisher URL)
Accepted Date: 2018-10-24
Published Date: 2018-12-03
Authors: Ferreira, Filipe ( 0000-0002-1533-843X)
Sánchez, Christian ( 0000-0003-3004-2773)
Sygletos, Stylianos
Ellis, Andrew D. ( 0000-0002-0417-0547)

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