Galdino, L;
Semrau, D;
Ionescu, M;
Edwards, A;
Pelouch, WS;
Desbruslais, SR;
James, J;
... Bayvel, P; + view all
(2019)
Study on the Impact of Nonlinearity and Noise on the Performance of High-Capacity Broadband Hybrid Raman-EDFA Amplified System.
Journal of Lightwave Technology
10.1109/jlt.2019.2933246.
(In press).
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Abstract
We experimentally demonstrated the transmission of 312 × 35 GBd DP-256QAM over 9 × 70 km spans using hybrid distributed Raman-EDFA (HRE) amplifiers with a continuous 91 nm gain bandwidth. A total throughput of 120 Tbit/s over 630 km is demonstrated, with a net achievable information rate after SD-FEC of 10.99 bit/symbol. We further perform an exten- sive, theoretical assessment of the noise contributions originating from amplifier, transceiver sub-system and fiber nonlinearity using the Gaussian noise model in the presence of inter-channel stimulated Raman scattering (ISRS GN model). The ISRS GN model accounts for arbitrary, wavelength dependent signal power profiles along fiber spans, which is vital for the modeling of ultra- wideband transmission, particularly for hybrid Raman-amplified links. It is found that, due to the low noise HRE amplifier and a transmission distance of 630 km, the noise originating from the transceiver sub-system imposed a penalty of 5 dB in SNR. The transceiver noise is, therefore, the major performance bottleneck and the main limitation of the system throughput.
| Type: | Article |
|---|---|
| Title: | Study on the Impact of Nonlinearity and Noise on the Performance of High-Capacity Broadband Hybrid Raman-EDFA Amplified System |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/jlt.2019.2933246 |
| Publisher version: | https://doi.org/10.1109/jlt.2019.2933246 |
| 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: | Bandwidth, Signal to noise ratio, Throughput, Optical noise, Gain, Transceivers, Modulation, Hybrid Raman-EDFA amplifier, broadband transmission system, high order modulation format, adaptive rate LDPC decoder |
| 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/10080645 |
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