Conception et mise en oeuvre d'un capteur électro-optique en vue de la mesure de grandeurs diverses : (température, champ électrique, etc.)

Abstract : In this thesis, we introduce a new architecture of an electro-optic sensor allowing the measurement of various parameters such as temperature or electric field. The optical instrumentation is based upon an Sénarmont setup adapted for a reflection use in which, an electro-optic modulator set the operating point and allow a compensation of the shifted phase introduced by the variation of the physical parameter. The sensor mainly consists of a synchronous detector, a PID controller and of a PWN based high voltage amplifier. This electronic part have a settling time of 50 ms and a stability of 2,3 %. The measurement have been made over 8 hours. We show some resultats on temperature variations measurements (sensitivity of 0,91 V/K, resolution of 4.4 mK, precision of 11 mK) and on electric field measurements ( sensitivity of 2,7 V/V/cm, resolution of 1,5 V/cm, settling time about 50 ms.
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Rémy Claverie-Rospide. Conception et mise en oeuvre d'un capteur électro-optique en vue de la mesure de grandeurs diverses : (température, champ électrique, etc.). Autre. Université Paul Verlaine - Metz, 2006. Français. ⟨NNT : 2006METZ035S⟩. ⟨tel-01752443⟩

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