Title

Guided-Mode Resonances In Planar Dielectric-Layer Diffraction Gratings

Abstract

The guided-mode resonance behavior of the evanescent and propagating fields associated with an unslanted, planar diffraction grating is studied by means of the rigorous coupled-wave theory. For weakly modulated gratings, the condition on the guided-mode wave number of the corresponding unmodulated dielectric-layer waveguide may be used to predict the range of the incident angle or wavelength within which the resonances can be excited. Furthermore, the locations of the resonances are predicted approximately by the eigenvalue equation of the waveguide. As the modulation amplitude increases, the location and shape of the resonances are described in detail by the rigorous coupled-wave theory. The results presented demonstrate that the resonances can cause rapid variations in the intensity of the external propagating diffracted waves. © 1990 Optical Society of America.

Publication Date

1-1-1990

Publication Title

Journal of the Optical Society of America A: Optics and Image Science, and Vision

Volume

7

Issue

8

Number of Pages

1470-1474

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1364/JOSAA.7.001470

Socpus ID

80052110114 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/80052110114

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