Switching of electromagnetic waves by two-layered periodic dielectric structures

The propagation of electromagnetic waves in two-layered periodic dielectric structures is investigated. The systematic dependence of the reflection co efficient on the parameters characterizing the structure is studied in deta il. Using results of this exact analysis we investigate the influence of va riation of the structure parameters an the reflection and transmission coef ficients. As an example, we consider the changes in the structure parameter s under an elastic stress. We show that under practically realizable condit ions the reflection and transmission of the electromagnetic wave can be cha nged by as much as 80-90 % by creating a constant elastic stress inside the structure. [S1063-651X(99)01210-6].