Abstract

Using a modal theory, we study the dynamics of a two-dimensional finite beam reflected by a nonlinear grating coupler. Different algorithms are proposed to calculate the linear as well as the nonlinear coupling coefficients. We show that this nonlinear grating coupler can be optimized with respect to switching contrast and power. We compare our results with the experimentally determined switching behavior of a silicon-on-sapphire coupler and study its application as a fast saturable absorber.

© 1995 Optical Society of America

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