Guided-wave acoustooptic Bragg diffraction in silica waveguides

A rigorous theoretical analysis of the optical guided-wave, surface acoustic wave and AO Bragg interaction between the optical guided-wave and surface acoustic wave in Si-based silica waveguide is presented. The mechanical displacement, strains and acoustic power of the SAW are studied for various SAW frequencies and ZnO layer thickness. The effects of SAW frequency, ZnO layer thickness, waveguide thickness, acoustic power and acoustic apertures on the AO Bragg interaction are provided as well.