TY - JOUR TI - Metal iris influence on guided-mode diffraction AU - Gerolymatos, P.G. AU - Manenkov, A.B. AU - Tigelis, I.G. AU - Amditis, A.J. JO - Journal of the Optical Society of America A: Optics and Image Science, and Vision PY - 2006 VL - 23 TODO - 6 SP - 1333-1339 PB - OSA - The Optical Society SN - null TODO - 10.1364/JOSAA.23.001333 TODO - Chebyshev approximation; Diffraction; Electric fields; Integral equations; Mathematical models; Optical waveguides; Polynomials, Aperture electric field distribution; Metal iris; Slab waveguide, Guided electromagnetic wave propagation TODO - The effects of the presence of metal irises on guided-mode propagation through a symmetrical three-layer slab waveguide are examined by using the integral equation method. The aperture electric field distribution is expressed in terms of a finite series of Chebyshev polynomials. The modal reflection and transmission coefficients, the near-field structure, and the far-field radiation pattern are calculated, while numerical results are presented for several iris apertures. © 2006 Optical Society of America. ER -