ELECTRIC-FIELD PATTERNS IN FINITE 2-DIMENSIONAL WIRE PHOTONIC LATTICES

Electric field patterns in finite two-dimensional wire photonics latti ces are investigated by means of electromagnetic simulations. These st udies reveal a strong analogy with the envelope wavefunction approach extensively used for semiconductor superlattices. Several propagating eigenmodes in the pass-band of the periodic structure as well as evane scent modes in the stop-bands are clearly identified. They are interpr eted on the basis of the matching of the wavelength of electromagnetic field to the lattice dimensions with an envelope wavefunction resulti ng of a Fabry-Perot effect in the cavity formed by the periodic struct ure. In terms of transmission coefficient, the calculated frequency de pendence are in agreement with those measured in finite metallic rod a rrays between 50 and 110 GHz. (C) 1997 Academic Press Limited.