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Etude, modélisation et réalisation de composants diffractants: Contribution à l'étude de matériaux accordables et application à l'enregistrement holographique de filtres résonants.

Abstract : This thesis is in keeping with the research activities of the optics department of the ENST Bretagne concerning
optical information processing functions. This work is based on the study of 1D or 2D diffraction
gratings realized holographically in order to obtain functions such as Bragg gratings or resonant optical
filters. Suitable simulation tools are developed to determine the theoretical response of these structures:
the rigorous coupled-wave theory and the differential method, which take the vector nature of light into
account. Two holographic materials used for recording volume holograms are studied: Dupont photopolymers
for which a diffusion model is established and H-PDLCs (Holographic Polymer Dispersed Liquid
Crystals) which can be used to realize electrically switchable Bragg gratings. These studies concerning
modelling and recording materials allow us to validate the principle of two resonant optical filters. The
first filter is a 2D photonic crystal made of two orthogonal periodic structures. The filtering operation
is due to the enhancement of the diffraction by the structure when the incident light is at the photonic
band-edge. The second resonant filter is tunable and uses surface plasmon resonance phenomena occurring
for metallic surface relief gratings, the tunability being provided by the PDLC material.
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https://tel.archives-ouvertes.fr/tel-00092017
Contributor : Sébastien Massenot <>
Submitted on : Thursday, September 7, 2006 - 11:34:43 PM
Last modification on : Thursday, June 11, 2020 - 2:16:22 PM
Long-term archiving on: : Tuesday, April 6, 2010 - 12:49:51 AM

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  • HAL Id : tel-00092017, version 1

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Sébastien Massenot. Etude, modélisation et réalisation de composants diffractants: Contribution à l'étude de matériaux accordables et application à l'enregistrement holographique de filtres résonants.. Physique Atomique [physics.atom-ph]. Ecole Nationale Supérieure des Télécommunications de Bretagne - ENSTB, 2006. Français. ⟨tel-00092017⟩

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