| Issue |
EPJ Web Conf.
Volume 287, 2023
EOS Annual Meeting (EOSAM 2023)
|
|
|---|---|---|
| Article Number | 07024 | |
| Number of page(s) | 2 | |
| Section | Topical Meeting (TOM) 7- Optical Frequency Combs | |
| DOI | https://doi.org/10.1051/epjconf/202328707024 | |
| Published online | 18 October 2023 | |
https://doi.org/10.1051/epjconf/202328707024
Bi-directional frequency shifting loops for real-time processing of broadband RF signals
1 Laboratoire Interdisciplinaire de Physique, UGA/CNRS, 38000 Grenoble, France
2 Institut de Planétologie et d’Astrophysique de Grenoble, UGA/CNRS, 38000 Grenoble, France
3 Univ Rennes, CNRS, Institut FOTON - UMR 6082, 35000 Rennes, France
* Corresponding author: hugues.guilletdechatellus@univ-rennes.fr
Published online: 18 October 2023
Analog photonic techniques can perform better than conventional digital electronics, which have significant limitations when it comes to processing fast RF signals on the fly. We show that a simple photonic architecture, based on a bi-directional frequency-shifting loop, makes it possible to calculate in real time the cross-correlation function of two broadband signals for about 200 values of their delay simultaneously. Additionally, our architecture also enables to perform spectral analysis of signals with 16 GHz instantaneous bandwidth, 100 % probability of interception, and detection electronics below 10 MSa/s.
© The Authors, published by EDP Sciences, 2023
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