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19 November 2003 Resonant behavior of waveguide gratings: design of non-polarizing filters
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Proceedings Volume 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life; (2003) https://doi.org/10.1117/12.525543
Event: 19th Congress of the International Commission for Optics: Optics for the Quality of Life, 2002, Florence, Italy
Abstract
We developed an approximate method to express the effects induced by a periodic perturbation on the dispersion relation of the eigenmodes of a planar waveguide. In the particular case when the grating has a plane of symmetry, we show that the dispersion relation of the eigenmodes can present a point of degeneracy. We relate the existence of a point of degeneracy to the possibility to obtain resonances, at the same wavelength and at the same angle of incidence, for both s and p polarization. This property is important for designing nonpolarizing guided mode resonant filters for oblique incidence.
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Anne-Laure Fehrembach and Anne Sentenac "Resonant behavior of waveguide gratings: design of non-polarizing filters", Proc. SPIE 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life, (19 November 2003); https://doi.org/10.1117/12.525543
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