The prismless excitation of guided waves in a Bragg reflection waveguide is investigated. We show that the guided modes can be directly excited by a plane wave that is incident from the air. An excellent agreement between the effective index of the guided mode in an ideal Bragg reflection waveguide and the minimum of the reflection curve has been found for two different semiconductor multilayer compositions. With the optimization of the width of the coupling region, an almost complete transfer of the incident wave to the guided mode was accomplished. This novel guided-wave device is predicted to match well with active multilayer heterostructure devices.
© 1991 Optical Society of America
Original Manuscript: October 23, 1990
Revised Manuscript: May 10, 1991
Manuscript Accepted: May 28, 1991
Published: October 1, 1991
F. Lederer, U. Trutschel, and C. Waechter, "Prismless excitation of guided waves," J. Opt. Soc. Am. A 8, 1536-1540 (1991)