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Geometry of the resonant grating used in this study. The hexagonal lattice period is , the hole radius is . Thicknesses are for the layers, for the lower layer, and for the upper capping layer.
Theoretical transmission spectra (gray line) and reflection spectra (black line) in and polarization. Experimental transmission (open circles) and reflection (black crosses) spectra are superimposed. The theoretical spectra are shifted by toward short wavelengths, and .
Evolution of the and resonant wavelengths vs the angle of incidence.
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