@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://rec.harvest-normandie.data4citizen.com/dataset/oai-hal-tel-00781178v1> a dcat:Dataset ;
    dct:description """
              A resonant grating filter is a simple structure composed of a stack of a few dielectric layers on which a sub-wavelength grating is engraved. Their main interest is the narrow spectral FWHM they can achieve: in practice, quality factors greater than 7000 have already been obtained. The potential application fields are: optical telecommunications, spectroscopy, lasers, sensoring, etc. We aim to develop the potential of resonant grating filters by studying the tunability of their center wavelength by electro-optic effect. We chose two materials, Lithium Niobate and Barium Titanate, because of their large electrooptic coefficients. We developed a numerical tool based on the Fourier Modal Method including anisotropic materials. This is indispensable to analysis the effects related to the incident polarization. We compared several configurations, allowing a strong (up to 90nm) or weak tunability, independent or not versus the incident polarization. For each case, a physical interpretation is given for the facts that are observed. Last, we conclude by practical considerations concerning the feasibility of the structures and the influence of the absorption losses.
            """ ;
    dct:identifier "tel-00781178" ;
    dct:issued "2026-05-14T21:59:05.622015"^^xsd:dateTime ;
    dct:language "en" ;
    dct:modified "2026-05-14T21:59:05.622021"^^xsd:dateTime ;
    dct:publisher <https://rec.harvest-normandie.data4citizen.com/organization/cce9db95-46d9-4dc2-84b6-764215d0a002> ;
    dct:title "Tunable Resonant Narrow-Band Filter Based on Electro-optic Materials" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "CCSD" ] ;
    dcat:distribution <https://rec.harvest-normandie.data4citizen.com/dataset/oai-hal-tel-00781178v1/resource/a378bcc2-607b-4db3-a0c0-e67801defaf1> ;
    dcat:keyword "angular-tolerance",
        "diffraction-gratings",
        "effet-electro-optique",
        "electro-optical-effect",
        "filtre-accordable",
        "guided-mode-resonance",
        "independance-polarisation",
        "infoeu-reposemanticsdoctoralthesis",
        "physphysphys-opticsphysics-physicsphysics-physicsoptics-physicsoptics",
        "polarization-independence",
        "reseaux-de-diffraction",
        "resonance-de-mode-guide",
        "theses",
        "tolerance-angulaire",
        "tunable-filter" ;
    dcat:landingPage <https://theses.hal.science/tel-00781178> .

<https://rec.harvest-normandie.data4citizen.com/dataset/oai-hal-tel-00781178v1/resource/a378bcc2-607b-4db3-a0c0-e67801defaf1> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2026-05-14T21:59:05.625945"^^xsd:dateTime ;
    dct:modified "2026-05-14T21:59:05.584020"^^xsd:dateTime ;
    dct:title "Tunable Resonant Narrow-Band Filter Based on Electro-optic Materials" ;
    dcat:accessURL <https://theses.hal.science/tel-00781178> .

<https://rec.harvest-normandie.data4citizen.com/organization/cce9db95-46d9-4dc2-84b6-764215d0a002> a foaf:Agent ;
    foaf:name "test_moissonnage_selune" .

<https://theses.hal.science/tel-00781178> a foaf:Document .