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Proceedings Paper

Asymmetry reversal and waveguide modes in photonic crystal slabs
Author(s): E. F. C. Driessen; P. O. M. Heemskerk; D. Stolwijk; E. W. J. M. van der Drift; M. J. A. de Dood
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Paper Abstract

The measured reflection spectra of two-dimensional photonic crystal slabs consist of an asymmetric peak on top of an oscillating background. For p-polarized light, the asymmetry of the peak flips for angles of incidence beyond Brewster's angle. We explain the observed line shapes with a Fano model that includes loss and use a waveguide model to predict the resonance frequencies of the photonic crystal slab. Finite-difference time domain calculations support the model and show that the resonance due to a higher order mode disappears when the substrate refractive index is increased beyond ns = 2.04. This is readily explained by the cut-off condition of the modes given by the waveguide model.

Paper Details

Date Published: 6 May 2008
PDF: 10 pages
Proc. SPIE 6989, Photonic Crystal Materials and Devices VIII, 69890G (6 May 2008); doi: 10.1117/12.780455
Show Author Affiliations
E. F. C. Driessen, Leiden Univ. (Netherlands)
P. O. M. Heemskerk, Leiden Univ. (Netherlands)
D. Stolwijk, Leiden Univ. (Netherlands)
E. W. J. M. van der Drift, Delft Univ. of Technology (Netherlands)
M. J. A. de Dood, Leiden Univ. (Netherlands)

Published in SPIE Proceedings Vol. 6989:
Photonic Crystal Materials and Devices VIII
Richard M. De La Rue; Ceferino López; Michele Midrio; Pierre Viktorovitch, Editor(s)

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