Hybrid photonics structures with grating and prism couplers based on ZnO waveguides

摘要

This paper presents the results of investigations concerning input?output systems of an electromagnetic wave in the visible and near visible spectrum for their application in structures of integrated optics. The input?output structures used in described planar optical waveguides are in a form of prism and grating couplers. The first part of the paper contains numerical analysis of grating couplers aiming at an optimization of their geometrical parameters, strictly – the depth of the grooves in the grating coupler. The second part presents the practical realization, as well as experimental tests of the planar optical waveguide with the hybrid input?output system. As the input system of the electromagnetic wave, a prism coupler was used, and in the case of the output system – a photonic structure with grating coupler was applied. The investigated planar wave guides with the input?output structures were made of a wide energy band gap semiconductor – zinc oxide (ZnO).