Yang, Rui;
Vercesi, Valeria;
Seeds, Alwyn;
Liu, Chin;
(2024)
Photonic sampling of microwave signals with adjustable sampling frequencies using an optical frequency comb.
Optics Express
, 32
(17)
pp. 30898-30908.
10.1364/OE.532840.
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Abstract
We propose and demonstrate a novel photonic sampling technique using an agile optical frequency comb generator achieving flexible sampling frequencies. A number of comb lines are carved into sampling pulses which are then time-dispersed along a single-mode optical fiber as a function of the electronically adjusted comb line spacing and the number of comb lines selected. Successful sampling and demodulation of QAM signals up to a 17 GHz carrier frequency with a sampling rate up to 50 GSa/s have been demonstrated. A minimum 1.5% EVM at 3 GHz and a maximum 4.4 bits (ENOB) at 2.1 GHz were also measured.
| Type: | Article |
|---|---|
| Title: | Photonic sampling of microwave signals with adjustable sampling frequencies using an optical frequency comb |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1364/OE.532840 |
| Publisher version: | https://doi.org/10.1364/OE.532840 |
| Language: | English |
| Additional information: | Published by Optica Publishing Group under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. |
| Keywords: | (060.5625) Radio frequency photonics; (070.1170) Analog optical signal processing; (320.5550) Pulses; (350.4010) Microwaves |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS 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/10195173 |
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