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By solving Maxwell’s equations for the propagation of electromagnetic waves in periodic dielectric structures (with dielectric constant in a uniform background sa), we found that several classes of periodic dielectric structures possess full photonic gaps, as in the case of dielectric spheres arranged in the diamond structure. These new structures have the additional advantage that they can be easily fabricated experimentally. © 1991 IOP Publishing Ltd.
Chan et al. (Mon,) studied this question.