Ferreira, FM;
Sillekens, E;
Karanov, BP;
Killey, RI;
(2020)
Digital Back Propagation via Sub-band Processing in Spatial Multiplexing Systems.
Journal of Lightwave Technology
10.1109/JLT.2020.3046076.
(In press).
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Abstract
An advanced digital backward-propagation (DBP) method using a separate-channels approach (SCA) is investigated for the compensation of inter-channel nonlinearities in spatial- and wavelength-multiplexed systems. Compared to the conventional DBP, intra- and inter-mode cross-phase modulation can be efficiently compensated by including the effect of the inter-channel walk-off in the nonlinear step of the split-step Fourier method. We found that the SCA-DBP relaxes the step size requirements by a factor of 10, while improving performance by 0.8 dB for large walk-off and strong linear coupling. For the first time, it is shown that in spatial multiplexed systems transmission performance can be improved by sub-band processing of back propagated channels.
| Type: | Article |
|---|---|
| Title: | Digital Back Propagation via Sub-band Processing in Spatial Multiplexing Systems |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/JLT.2020.3046076 |
| Publisher version: | https://doi.org/10.1109/JLT.2020.3046076 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions. |
| 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/10115615 |
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