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24 February 2010 Influence of asymmetry on the band structure of photonic crystals
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Abstract
Computer calculation of photonic band structure for unit cells of various symmetry in the two-dimensional square lattice suggests that the bandgap calculated by traversing the ΓXM triangle in k-space is only reliable when the unit cell is C4v symmetric. For structures of lower symmetry, examining a two-dimensional subset of the first Brillouin zone will give smaller bandgaps.
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Seyed Hessam Moosavi Mehr and Sina Khorasani "Influence of asymmetry on the band structure of photonic crystals", Proc. SPIE 7609, Photonic and Phononic Crystal Materials and Devices X, 76091G (24 February 2010); https://doi.org/10.1117/12.839839
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