Abstract
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.
Highlights
To cite this version: Zeina Abdallah, Y.G
Many different resonator technologies can be involved in these applications, with some of which featuring a ultra-high Q factors, such as: Ultra Low Expansion (ULE) Fabry-Perot resonators[9] (Q ~ 1010), Whispering Gallery Modes (WGM) resonators, e.g. silica spheres[10] (Q ~ 109) or polished monocrystalline disks[11] (Q ~ 108 to 1010), active or passive fiber ring resonator[12] (Q ~ 108 to 1010)
This paper demonstrates that, in addition to the amplitude response of the resonator, which gives access to the measure of several parameters like the free spectral range (FSR), the Δf1/2 and the quality factor, this technique is able to simultaneously characterize the resonator phase response thanks to a vector network analyzer (VNA)
Summary
To cite this version: Zeina Abdallah, Y.G. Boucher, Arnaud Fernandez, Stéphane Balac, Olivier Llopis. Radio frequency spectral characterization and model parameters extraction of high Q optical resonators. HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d’enseignement et de recherche français ou étrangers, des laboratoires publics ou privés. 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. A detailed knowledge of their properties is essential to accurately model these devices and to achieve better performance
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