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Sci Rep. 2016 Jun 2;6:27208. doi: 10.1038/srep27208.

Radio frequency spectral characterization and model parameters extraction of high Q optical resonators.

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LAAS-CNRS, Université de Toulouse, CNRS, 7 avenue de Colonel Roche, 31031 Toulouse, France.
CNES, 18 avenue Edouard Belin, 31400 Toulouse, France.
FOTON CNRS, UMR 6082, ENSSAT, CS 80518, 22305 Lannion, France.
ENIB, CS 73862, F-29238 BREST cedex 3, France.
Univ de Toulouse, UPS, LAAS, F-31400 Toulouse, France.
IRMAR, Université de Rennes 1, CNRS, Campus de Beaulieu, 35042 Rennes, France.


A microwave domain characterization approach is proposed to determine the properties of high quality factor optical resonators. This approach features a very high precision in frequency and aims to acquire a full knowledge of the complex transfer function (amplitude and phase) characterizing an optical resonator using a microwave vector network analyzer. It is able to discriminate between the different coupling regimes, from the under-coupling to the selective amplification, and it is used together with a model from which the main resonator parameters are extracted, i.e. coupling factor, intrinsic losses, phase slope, intrinsic and external quality factor.

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