Abstract
Currently, a great effort is put in making optical photonic crystals, i.e. 3D periodic composites of dielectric materials with a lattice parameter a of the order of visible wavelengths λ. This is driven by the goal to make optical band gaps, that are expected in suitable crystal structures for refractive index contrasts m > 2 [1], and photonic parameters - defined as the polarizibility per volume – Ψ=πα/v > 0.5 [2].
© 1996 IEEE
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