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Photonic THz Generation using Optoelectronic Oscillator-driven Optical Frequency Comb Generator

Hasanuzzaman, GKM; Shams, H; Renaud, CC; Mitchell, J; Iezekiel, S; (2018) Photonic THz Generation using Optoelectronic Oscillator-driven Optical Frequency Comb Generator. In: Llopi, Olivier and Rissons, Angélique, (eds.) Proceedings of 2018 International Topical Meeting on Microwave Photonics (MWP). IEEE: Toulouse, France. Green open access

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Abstract

We propose and experimentally demonstrate a photonic THz signal generation technique combining a discrete optoelectronic oscillator (OEO) and optical frequency comb (OFC) generator. Using a microwave photonic filter (MPF), we generate an electrical oscillation up to 17.33 GHz with a phase noise of -103 dBc/Hz at 10 kHz offset frequency. The OEO frequency tunability is obtained by changing the bandwidth of a tunable optical band pass filter (TOBF). This can produce an electrical RF carrier from 6.58 GHz - 18.36 GHz. The OEOdriven optical comb generates 22 optical comb lines with a frequency spacing of 17.33 GHz covering a bandwidth of 360 GHz. By selecting two optical comb lines using a wavelength selective switch (WSS) and beating them in a uni-travelling carrier photodiode (UTC-PD), a THz wave is generated at 242.6 GHz with a phase noise of -78 dBc/Hz at 10 kHz offset frequency. This technique has potential for use in THz signal generation where it is possible to tune the THz carrier frequency by tuning the RF carrier generated from the OEO.

Type: Proceedings paper
Title: Photonic THz Generation using Optoelectronic Oscillator-driven Optical Frequency Comb Generator
Event: 2018 International Topical Meeting on Microwave Photonics (MWP)
Location: Toulouse, FRANCE
Dates: 22 October 2018 - 25 October 2018
ISBN: 978-1-5386-5226-8
ISBN-13: 978-1-5386-5225-1
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/MWP.2018.8552892
Publisher version: https://doi.org/10.1109/MWP.2018.8552892
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 frequency comb, optoelectronic oscillator, microwave photonic filter, phase noise
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/10070775
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