The DOP team develops various optical sources with very high spectral purity for applications in microwave photonics. Spectral control based on Brillouin effect and spectral narrowing techniques enable to implement self-adaptive photonic oscillators. Different optical architectures are investigated for the generation of RF or THz signals: beating of two optical frequencies locked to a cavity, dual-frequency lasers, opto-electronic oscillators or even frequency combs generated in frequency-shifting loops. We also develop all-optical techniques for antenna control, millimeter carrier communications and signal processing. Some of these functionalities are also implemented in photonic integrated circuits (PICs).
Related research activities
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Frequency shifting loops
SommairePresentationFinancial supportResearch staff involvedTo learn more… Presentation Frequency-shifting loops are a simple architecture for generating frequency combs by recirculation of a continuous laser in a loop containing a modulator. We study the behavior of these systems in different configurations (acousto-optic
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Synthesis of RF and THz signals
SommairePresentationFinancial supportResearch staff involvedTo learn more… Presentation The interference of two laser carriers on the same transverse mode and on the same polarization produces, on a photodetector, a the frequency difference between the two carriers. Manipulations combining photonic and electronic
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Circuits photoniques intégrés
SommairePrésentationFinancementsPersonnels de recherche impliquésPour en savoir plus Présentation Les circuits photoniques intégrés (PIC) sont à l’optique ce que les circuits imprimés sont à l’électronique. Leur développement laisse donc augurer des perspectives immenses en termes d’application, à la fois pour des