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Coherent Frequency Tuneable THz Wireless Signal Generation Using an Optical Phase Lock Loop System

Shams, H; Balakier, K; Fice, MJ; Ponnampalam, L; Graham, CS; Renaud, CC; Seeds, AJ; (2017) Coherent Frequency Tuneable THz Wireless Signal Generation Using an Optical Phase Lock Loop System. In: Proceedings of the 2017 International Topical Meeting on Microwave Photonics (MWP). IEEE: Beijing, China. Green open access

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Abstract

We demonstrate experimentally, for the first time, the photonic generation of a continuous tunable THz wireless signal based on using an optical phase lock loop (OPLL) subsystem and optical frequency comb generator (OFCG). The OPLL is employed to select one line from the optical comb and shift it by the desired frequency offset allowing for the frequency tuneability of THz carrier signal. The selected optical tone from the OPLL is heterodyne mixed with another selected optical line of the optical comb to generate a stabilized THz frequency carrier with a low phase noise. Full system operation is demonstrated by transmitting wirelessly a THz signal modulated with 10 Gbaud QPSK data. The system evaluation is carried out for four selected THz carrier frequencies obtained by tuning the laser included in the OPLL. This configuration is a promising architecture that would allow a THz carrier to be flexibly generated at the central office with high frequency stability and low phase noise.

Type: Proceedings paper
Title: Coherent Frequency Tuneable THz Wireless Signal Generation Using an Optical Phase Lock Loop System
Event: 2017 International Topical Meeting on Microwave Photonics (MWP)
Dates: 22 October 2017 - 26 October 2017
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/MWP.2017.8168638
Publisher version: https://doi.org/10.1109/MWP.2017.8168638
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: Optical mixing, Optical filters, Optical signal processing, Optical modulation, Optical attenuators, Adaptive optics, Optical feedback, Photonic THz generation, optical phase lock loop (OPLL), optical heterodyning detection, digital signal processing, high-speed wireless, Optical fiber communication, radio-over-fibre
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/10022679
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