Resonant waveguide-grating switching device with nonlinear optical material

The design and analysis of a dielectric guided-mode resonance filter (GMRF) utilizing a nonlinear material for the waveguide is presented. Small chang es to the parameters of a GMRF have a large impact on its resonance. A nonl inear material can provide a small change in the refractive index of the wa veguide, altering the resonance of the device and resulting in modulation o f the transmitted and reflected output of the filter. Numerical results sho w that nonlinear switching from 100% transmission to 100% reflection can be accomplished with less than 100 kW/cm(2) using a simple design. (C) 1999 O ptical Society of America. OCIS codes: 230.0230, 050.1950, 130.3120, 190.43 60, 230.3990, 260.5740.