Abstract

The reflection and transmission of thin-film guided waves incident at variable angles upon a variety of transverse discontinuities are analyzed. A thin film bounded by semi-infinite media is modeled by a thin film bounded by finite media, terminated at shorting planes situated parallel to and a long distance from the film surfaces. The results obtained with this model are checked against previous calculations for normal incidence onto a waveguide–air endface. For nonnormal incidence upon the interface between two waveguides, various interesting phenomena such as guided-wave equivalents of Brewster’s angle, multiple cutoff angles for both guided waves and radiation fields, and intermode conversion are investigated numerically.

© 1987 Optical Society of America

Analysis of the reflection grating couplers for waves at oblique incidence

Wee Sang Park and S. R. Seshadri
J. Opt. Soc. Am. A 4(6) 1001-1020 (1987)

Quasi-optics of the evanescent wave excitation of planar dielectric waveguides

Zi Hua Wang and S. R. Seshadri
J. Opt. Soc. Am. A 4(11) 2141-2149 (1987)

Electromagnetic inhomogeneous waves at planar boundaries: tutorial

Fabrizio Frezza and Nicola Tedeschi
J. Opt. Soc. Am. A 32(8) 1485-1501 (2015)

Quasi-optics of the coupling of guided modes in two parallel, identical dielectric waveguides

S. R. Seshadri
J. Opt. Soc. Am. A 4(6) 1030-1036 (1987)

Reflectivity properties of an abruptly ended asymmetrical slab waveguide for the case of transverse magnetic modes

G. Latsas, A. B. Manenkov, I. G. Tigelis, and E. Sarri
J. Opt. Soc. Am. A 17(1) 162-172 (2000)