Arnaud Fernandez

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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(More)
— A hybrid model is proposed in order to exploit the idea of compensating semiconductor optical amplifiers (SOAs) nonlinearity by adjusting cavity dispersion in a SOA-fiber ring mode-locked laser. The model is checked by analytical as well as experimental results. Excellent agreement is obtained in both cases. It is predicted that, once the cavity(More)
A simple and powerful modeling method is established to resolve travelling waves inside photonic devices. The basic idea is to transform usual space-time coordinates (z,t) into a mixed grid (u,v) in which waves propagate along their characteristic lines, resulting in an inherent numerical stability, as well as easy interpretation of all parametric variables(More)
Using semiconductor optical amplifier (SOA) as gain medium and active mode-locker, and a dispersion-compensating fibre (DCF) to manage cavity dispersion as well as to control and remedy pulse shape, we report an all-optical clock recovery device capable of continuously recovering the clock frequency of optical return-to-zero (RZ) signals with 10 to 12.5 GHz(More)
RÉSUMÉ Dans cet article nous présentons la faculté d'un résonateur optique de facteur de qualité Q opt =1,25.10 10 à générer simultanément un laser continu à 1,55 µm et un signal hyperfréquence à f=10 GHz de haute pureté spectrale. Ce résultat a pu être rendu possible en insérant une cavité résonante fibrée de 120 m au sein d'un oscillateur(More)
This report is devoted to the study and to the comparison of methods for estimation of the local error and for adaptive step-size control when solving the generalised nonlinear Schrodinger equation (GNLSE) in optics by the Interaction Picture (IP) method or by the Symmetric Split-Step (S3F) method. Namely, we propose and study the use of an embedded(More)