Xu, T;
Karanov, BP;
Shevchenko, M;
Lavery, D;
Liga, G;
Killey, R;
Bayvel, P;
(2017)
Digital nonlinearity compensation in high-capacity optical communication systems considering signal spectral broadening effect.
Scientific Reports
, 7
, Article 12986. 10.1038/s41598-017-12614-x.
Preview |
Text
Karanov_%5BNature%5D Scientific Reports2017_Tianhua.pdf - Published Version Download (3MB) | Preview |
Abstract
Nyquist-spaced transmission and digital signal processing have proved effective in maximising the spectral efficiency and reach of optical communication systems. In these systems, Kerr nonlinearity determines the performance limits, and leads to spectral broadening of the signals propagating in the fibre. Although digital nonlinearity compensation was validated to be promising for mitigating Kerr nonlinearities, the impact of spectral broadening on nonlinearity compensation has never been quantified. In this paper, the performance of multi-channel digital back-propagation (MC-DBP) for compensating fibre nonlinearities in Nyquist-spaced optical communication systems is investigated, when the effect of signal spectral broadening is considered. It is found that accounting for the spectral broadening effect is crucial for achieving the best performance of DBP in both single-channel and multi-channel communication systems, independent of modulation formats used. For multi-channel systems, the degradation of DBP performance due to neglecting the spectral broadening effect in the compensation is more significant for outer channels. Our work also quantified the minimum bandwidths of optical receivers and signal processing devices to ensure the optimal compensation of deterministic nonlinear distortions.
| Type: | Article |
|---|---|
| Title: | Digital nonlinearity compensation in high-capacity optical communication systems considering signal spectral broadening effect |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1038/s41598-017-12614-x |
| Publisher version: | http://dx.doi.org/10.1038/s41598-017-12614-x |
| Language: | English |
| 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/. |
| Keywords: | Electrical and electronic engineering, Optical techniques |
| 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/1573647 |
Archive Staff Only
 |
View Item |
