Ionescu, M;
Lavery, D;
Edwards, A;
Sillekens, E;
Semrau, D;
Galdino, L;
Killey, RI;
... Bayvel, P; + view all
(2020)
74.38 Tb/s Transmission Over 6300 km Single Mode Fibre Enabled by C plus L Amplification and Geometrically Shaped PDM-64QAM.
Journal of Lightwave Technology
, 38
(2)
pp. 531-537.
10.1109/JLT.2019.2954458.
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Abstract
Ultrawide-bandwidth optical amplification over almost 90 nm, covering the C+L bands, is described. Complemented by system-tailored geometrical constellation shaping and nonlinearity compensation, it enabled a record capacity transmission of 74.38 Tb/s over 6,300 km of G.654 single-mode fibre. The hybrid scheme, combining backward Raman pre-amplification with EDFA, significantly improves the average effective noise figure across the entire bandwidth, allowing the use of span lengths of 70 km. The system-tailored GS-64QAM constellation was optimised to both linear link impairments and transceiver nonlinearities, improving the gap to the AWGN channel capacity relative to square 64QAM from 0.6 bit/symbol to 0.35 bit/symbol. We experimentally evaluated the system performance using the bit-wise achievable information rate (AIR) and signal-to-noise ratio (SNR) at the end of transmission, as well as post SD-FEC BER.
| Type: | Article |
|---|---|
| Title: | 74.38 Tb/s Transmission Over 6300 km Single Mode Fibre Enabled by C plus L Amplification and Geometrically Shaped PDM-64QAM |
| Location: | San Diego, CA |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/JLT.2019.2954458 |
| Publisher version: | https://doi.org/10.1109/JLT.2019.2954458 |
| 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. |
| Keywords: | Science & Technology, Technology, Physical Sciences, Engineering, Electrical & Electronic, Optics, Telecommunications, Engineering, Broadband C plus L band transoceanic transmission, Raman amplification, Erbium-doped fibre amplifier, nonlinear compensation, geometric constellation shaping |
| 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/10092014 |
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