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 coefficient on the parameters characterizing the structure is studied in detail. Using results of this exact analysis we investigate the influence of variation of the structure parameters on the reflection and transmission coefficients. As an example, we consider the changes in the structure parameters under an elastic stress. We show that under practically realizable conditions the reflection and transmission of the electromagnetic wave can be changed by as much as 80-90 % by creating a constant elastic stress inside the structure.