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Proceedings Paper

Resonant behavior of waveguide gratings: design of non-polarizing filters
Author(s): Anne-Laure Fehrembach; Anne Sentenac
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Paper 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.

Paper Details

Date Published: 19 November 2003
PDF: 2 pages
Proc. SPIE 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life, (19 November 2003); doi: 10.1117/12.525543
Show Author Affiliations
Anne-Laure Fehrembach, Institut Fresnel (France)
Anne Sentenac, Institut Fresnel (France)


Published in SPIE Proceedings Vol. 4829:
19th Congress of the International Commission for Optics: Optics for the Quality of Life
Giancarlo C. Righini; Anna Consortini, Editor(s)

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