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Experimental Investigation of Phase Noise Tolerance of SSB THz Signals

Gonzalez Guerrero, L; Shams, H; Fice, MJ; Seeds, AJ; Renaud, CC; Fatadin, I; Naftaly, M; (2017) Experimental Investigation of Phase Noise Tolerance of SSB THz Signals. In: Proceedings of the 2017 International Topical Meeting on Microwave Photonics (MWP). IEEE: Beijing, China. Green open access

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Abstract

Wireless bridges operating at THz frequencies have drawn a lot of attention in recent years. This application requires multiple optical local oscillators (LOs) throughout the link and, hence, the accumulated phase noise may impose a major challenge for its practical implementation. Of all the techniques to mitigate phase noise, single sideband (SSB) modulation is a very promising candidate due to its simple implementation. In this paper, we show, for the first time, the transmission of a 6 GBd SSB quadrature phase shift keying (QPSK) signal at 250 GHz and investigate the impact of laser phase noise on the quality of the THz signal. The performance of the system is investigated by digitally tuning the linewidth of the optical local oscillator up to 10 MHz. The results show no observable penalty associated with increasing linewidth, confirming the validity of SSB for applications where multiple domain conversions are required.

Type: Proceedings paper
Title: Experimental Investigation of Phase Noise Tolerance of SSB THz Signals
Event: 2017 International Topical Meeting on Microwave Photonics (MWP)
Location: Beijing (China)
Dates: 22 October 2017 - 26 October 2017
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/MWP.2017.8168729
Publisher version: https://doi.org/10.1109/MWP.2017.8168729
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: Amplitude modulation, Wireless communication, Optical mixing, Optical filters, Optical fiber communication, Frequency modulation, THz communications, Optical communications, Wireless bridges, Single sideband modulation
UCL classification: UCL > Provost and Vice Provost Offices
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/10022678
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