Galdino, L;
Tan, M;
Alvarado, A;
Lavery, D;
Rosa, P;
Maher, R;
Diego Ania-Castanon, J;
... Bayvel, P; + view all
(2016)
Amplification Schemes and Multi-Channel DBP for Unrepeatered Transmission.
Journal Of Lightwave Technology
, 34
(9)
pp. 2221-2227.
10.1109/JLT.2016.2521002.
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Abstract
The performance of unrepeatered transmission of a seven Nyquist-spaced 10 GBd PDM-16QAM superchannel using full signal band coherent detection and multi-channel digital back propagation (MC-DBP) to mitigate nonlinear effects is analysed. For the first time in unrepeatered transmission, the performance of two amplification systems is investigated and directly compared in terms of achievable information rates (AIRs): 1) erbium-doped fibre amplifier (EDFA) and 2) second-order bidirectional Raman pumped amplification. The experiment is performed over different span lengths, demonstrating that, for an AIR of 6.8 bit/s/Hz, the Raman system enables an increase of 93 km (36 %) in span length. Further, at these distances, MC-DBP gives an improvement in AIR of 1 bit/s/Hz (to 7.8 bit/s/Hz) for both amplification schemes. The theoretical AIR gains for Raman and MC-DBP are shown to be preserved when considering low-density parity-check codes. Additionally, MC-DBP algorithms for both amplification schemes are compared in terms of performance and computational complexity. It is shown that to achieve the maximum MC-DBP gain, the Raman system requires approximately four times the computational complexity due to the distributed impact of fibre nonlinearity.
| Type: | Article |
|---|---|
| Title: | Amplification Schemes and Multi-Channel DBP for Unrepeatered Transmission |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/JLT.2016.2521002 |
| Publisher version: | http://dx.doi.org/10.1109/JLT.2016.2521002 |
| Language: | English |
| Additional information: | Copyright © 2016 IEEE. Translations and content mining are permitted for academic research only. Personal use is also permitted, but republication/redistribution requires IEEE permission. See http://www.ieee.org/publications standards/publications/rights/index.html for more information. |
| Keywords: | Achievable information rates, coherent detection, forward error correction (FEC), optical fibre communication, Raman amplification, unrepeatered transmission |
| 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/1480958 |
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