We present a brief tutorial overview of the basic physics of periodically modulated index structures and how they affect an incident electromagnetic wave in various simple limits. Discussions of the wave-vector spectrum, coupled-amplitude equations, and finite grating-size effects are included. We also discuss ways of implementing modulated index structures.
© 1990 Optical Society of America
George I. Stegeman and Dennis G. Hall, "Modulated index structures," J. Opt. Soc. Am. A 7, 1387-1398 (1990)