Journal
OPTICS EXPRESS
Volume 13, Issue 20, Pages 8083-8088Publisher
OPTICAL SOC AMER
DOI: 10.1364/OPEX.13.008083
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We studied the optical properties of a dielectric photonic crystal structure with spirals arranged in a hexagonal lattice. The dielectric constant of the material was 9 and the filling ratio was 15.2%. We found that this kind of structure exhibits a significant polarization gap in the light that was incident along the axis of the spirals. The eigenmodes inside the polarization gap were predominantly right-hand (left-hand) polarized depending on the whether if the spirals are left-handed (right-handed). We calculated the transmission spectrum of a slab of such a structure and it matches well with the analysis of the eigenmodes. (c) 2005 Optical Society of America.
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