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    dct:description """
              This thesis is in keeping with the research activities of the optics department of the ENST Bretagne concerning<br />optical information processing functions. This work is based on the study of 1D or 2D diffraction<br />gratings realized holographically in order to obtain functions such as Bragg gratings or resonant optical<br />filters. Suitable simulation tools are developed to determine the theoretical response of these structures:<br />the rigorous coupled-wave theory and the differential method, which take the vector nature of light into<br />account. Two holographic materials used for recording volume holograms are studied: Dupont photopolymers<br />for which a diffusion model is established and H-PDLCs (Holographic Polymer Dispersed Liquid<br />Crystals) which can be used to realize electrically switchable Bragg gratings. These studies concerning<br />modelling and recording materials allow us to validate the principle of two resonant optical filters. The<br />first filter is a 2D photonic crystal made of two orthogonal periodic structures. The filtering operation<br />is due to the enhancement of the diffraction by the structure when the incident light is at the photonic<br />band-edge. The second resonant filter is tunable and uses surface plasmon resonance phenomena occurring<br />for metallic surface relief gratings, the tunability being provided by the PDLC material.
            """ ;
    dct:identifier "tel-00092017" ;
    dct:issued "2026-05-07T18:31:51.853791"^^xsd:dateTime ;
    dct:language "fr" ;
    dct:modified "2026-05-07T18:31:51.853796"^^xsd:dateTime ;
    dct:publisher <https://rec.harvest-normandie.data4citizen.com/organization/cce9db95-46d9-4dc2-84b6-764215d0a002> ;
    dct:title "Study, modelling and realization of diffractive components: Contribution to the study of tunable materials and applications to holographic recordings of resonant optical filters." ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "CCSD" ] ;
    dcat:distribution <https://rec.harvest-normandie.data4citizen.com/dataset/oai-hal-tel-00092017v1/resource/d1339a9a-093e-4c06-931d-877ef9964fb3> ;
    dcat:keyword "cristaux-photoniques",
        "diffraction-grating",
        "holographie",
        "holography",
        "infoeu-reposemanticsdoctoralthesis",
        "materiaux-composites-polymere-cristal-liquide",
        "photonic-crystals",
        "physphysphys-atom-phphysics-physicsphysics-physicsatomic-physics-physicsatom-ph",
        "physphysphysics-physicsphysics-physics",
        "plasmons-de-surface",
        "polymer-dispersed-liquid-crystals",
        "reseaux-de-diffraction",
        "spiotherengineering-sciences-physicsother",
        "surface-plasmon",
        "theses" ;
    dcat:landingPage <https://theses.hal.science/tel-00092017> .

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    dct:issued "2026-05-07T18:31:51.862143"^^xsd:dateTime ;
    dct:modified "2026-05-07T18:31:51.837842"^^xsd:dateTime ;
    dct:title "Study, modelling and realization of diffractive components: Contribution to the study of tunable materials and applications to holographic recordings of resonant optical filters." ;
    dcat:accessURL <https://theses.hal.science/tel-00092017> .

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