High-Q optical resonators: characterization and application to stabilization of lasers and high spectral purity microwave oscillatorsReport as inadecuate




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1 LAAS-MOST - Équipe Microondes et Opto-microondes pour Systèmes de Télécommunications LAAS - Laboratoire d-analyse et d-architecture des systèmes Toulouse 2 CNES - Centre National d-Etudes Spatiales

Abstract : Microwave optical systems for frequency generation are described in this paper. The goal is to reach high spectral purity in the microwave frequency range using ultra high Q optical resonators. The resonators investigated are of two types : resonant passive fiber rings and WGM tridimensional resonators. They all feature ultra high optical Q factors, in excess of 10^8 or 10^9 near 1550 nm. These resonators also sustain a large number of optical resonances, and the microwave signal is stabilized on two or more resonances of this optical comb. Different problems have to be overcome in order to reach a functional system, such as : resonator design and coupling, laser stabilization on a resonance, overall system design, noise optimization

. This paper gives an overlook on these problems, and on some solutions we found to work towards a compact and efficient microwave opto-electronic oscillator OEO. A first result is presented on a 10 GHz OEO based on a resonant fiber ring.

Keywords : microwave oscillator optical resonator WGM resonator phase noise optical fiber





Author: Olivier Llopis - Pierre-Henri Merrer - Aude Bouchier - Khaldoun Saleh - Gilles Cibiel -

Source: https://hal.archives-ouvertes.fr/



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