Optically controlled Bragg reflection characteristic of millimeter waves in a corrugated dielectric waveguide

Abstract

A corrugated dielectric waveguide with silicon overlay has been analyzed by coupled mode theory to study the variation of Bragg reflection characteristics. By optical illumination, the plasma-induced semiconductor exhibits an interesting behavior on the propagation characteristics of a corrugated dielectric waveguide. To validate theoretical estimations, experiments have been carried out at Q-band. The results could be used for optically controlled filters and switches at millimeter-wave band. © 1998 John Wiley & Sons, Inc.