The scattering of electromagnetic waves by a dielectric structure that fills a slit aperture in a conducting screen is considered. The cavity consists of two zones of different materials separated by an arbitrarily shaped interface. A rigorous <i>R</i>-matrix multilayer modal method is applied, which gives numerical stability even for deep structures. Examples of the numerical results obtained are shown and discussed for both fundamental cases of polarization.
© 1998 Optical Society of America
Ricardo A. Depine and Diana C. Skigin, "Multilayer modal method for diffraction from dielectric inhomogeneous apertures," J. Opt. Soc. Am. A 15, 675-683 (1998)