Gonzalez-Guerrero, L;
Shams, H;
Fatadin, I;
Wu, JE;
Fice, MJ;
Naftaly, M;
Seeds, AJ;
(2021)
Pilot-tone assisted 16-QAM photonic wireless bridge operating at 250 GHz.
Journal of Lightwave Technology
, 39
(9)
10.1109/JLT.2021.3053616.
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Abstract
A photonic wireless bridge operating at a carrier frequency of 250 GHz is proposed and demonstrated. To mitigate the phase noise of the free-running lasers present in such a link, the tone-assisted carrier recovery is used. Compared to the blind phase noise compensation (PNC) algorithm, this technique exhibited penalties of 0.15 dB and 0.46 dB when used with aggregated Lorentzian linewidths of 28 kHz and 359 kHz, respectively, and 20 GBd 16-quadrature amplitude modulation (QAM) signals. The wireless bridge is also demonstrated in a wavelength division multiplexing (WDM) scenario, where 5 optical channels are generated and sent to the Tx remote antenna unit (RAU). In this configuration, the full band from 224 GHz to 294 GHz is used. Finally, a 50 Gbit/s transmission is achieved with the proposed wireless bridge in single channel configuration. The wireless transmission distance is limited to 10 cm due to the low power emitted by the uni-travelling carrier photodiode used in the experiments. However, link budget calculations based on state-of-the-art THz technology show that distances >1000 m can be achieved with this approach.
| Type: | Article |
|---|---|
| Title: | Pilot-tone assisted 16-QAM photonic wireless bridge operating at 250 GHz |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/JLT.2021.3053616 |
| Publisher version: | https://doi.org/10.1109/JLT.2021.3053616 |
| Language: | English |
| Additional information: | © 2021 IEEE. This work is licensed under a Creative Commons Attribution 4.0 License. For more information, see (https://creativecommons.org/licenses/by/4.0/). |
| Keywords: | Broadband communications, digital signal processing, microwave photonics, millimeter wave communications, optical mixing, sub-THz communications, wireless bridge |
| 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/10122607 |
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