Galdino, L;
Edwards, A;
Yi, W;
Sillekens, E;
Wakayama, Y;
Gerard, T;
Pelouch, W;
... Bayvel, P; + view all
(2020)
Optical Fibre Capacity Optimisation via Continuous Bandwidth Amplification and Geometric Shaping.
IEEE Photonics Technology Letters
, 32
(17)
pp. 1021-1024.
10.1109/lpt.2020.3007591.
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Abstract
The maximum data throughput in a single mode optical fibre is a function of both the signal bandwidth and the wavelength-dependent signal-to-noise ratio (SNR). In this paper, we investigate the use of hybrid discrete Raman & rare-earth doped fibre amplifiers to enable wide-band signal gain, without spectral gaps between amplification bands. We describe the widest continuous coherent transmission bandwidth experimentally demonstrated to date of 16.83 THz, achieved by simultaneously using the S-, C- and L-bands. The variation of fibre parameters over this bandwidth, together with the hybrid amplification method result in a significant SNR wavelength-dependence. To cope with this, the signal was optimised for each SNR, wavelength and transmission band. By using a system-tailored set of geometrically shaped constellations, we demonstrate the transmission of 660 ×25 GBd channels over 40 km, resulting in a record single mode fibre net throughput of 178.08 Tbit/s.
| Type: | Article |
|---|---|
| Title: | Optical Fibre Capacity Optimisation via Continuous Bandwidth Amplification and Geometric Shaping |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/lpt.2020.3007591 |
| Publisher version: | https://doi.org/10.1109/LPT.2020.3007591 |
| 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: | Broadband transmission system, high order modulation format, geometric 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 Chemical Engineering 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/10106444 |
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