The photonic band structure of a two-dimensional square lattice composed of metallic cylinders was calculated for the H polarization by means of the numerical simulation of dipole radiation based on the finite-difference time-domain method. The presence of radiational eigenmodes that originate from surface plasmon polaritons was clearly shown by the symmetry and the localized nature of the field distribution.
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Ito et al. (2001) studied this question.
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