title: Polarization independence of a one-dimensional grating in conical mounting.
abstract: We demonstrate theoretically a polarization-independent guided-mode resonant filter with only a one dimensional grating. A rigorous method, the modal method by Fourier expansion, is used to compute the diffracted efficiencies of the grating. Wave-vector analysis fails to correctly design a polarization-independent structure. We show that a rigorous analysis of the resonances must be employed to obtain such a device; using a pole approach, we study the effects of grating parameters on the resonances of both polarizations.
authors.affiliation: Laboratoire des Sciences et Matériaux pour l'Electronique et d'Automatique, Unité Mixte de Recherche, Centre National de la Recherche Scientifique 6602, Université Blaise Pascal Clermont II, B.P. 45, 63177 Aubière, France. lacour@lasmea.univ-bpclermont.fr
authors.forename: Dominique
authors.initials: D
authors.lastname: Lacour
authors.forename: Gérard
authors.initials: G
authors.lastname: Granet
authors.forename: Jean-Pierre
authors.initials: JP
authors.lastname: Plumey
authors.forename: Alain
authors.initials: A
authors.lastname: Mure-Ravaud