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We study the influence of scatterers symmetry on the photonic band gap based on hexangular-lattice photonic crystal. In comparison with the band gap of photonic crystal with five types of different symmetrical scatterers, the number of PBGs of E- and H-polarization obviously increase with breaking the symmetry of scatterers, so that increases the possibility of coinciding with PBGs of E- and H-polarization...
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