Theoretical Analysis of a Simple Hyperbolic Metamaterial Wave Splitter

Abstract

Wave splitter for TE and TM wave is critical components in the integrated optics. Current technologies mainly rely on two types of designs to separate TE and TM waves: directional coupler type and branch type, but these designs are generally complex. By exploring the transmission behavior of the waves in the hyperbolic metamaterial and the distinct dispersion relationships of TE and TM waves in these materials, we have designed a wave splitter with a simple structure. Under different parameter conditions, we can get the pure TE wave or pure TM wave in the transmission region. Furthermore, if the specific condition is satisfied, we can even get the pure TE wave in the reflection or transmission region and the pure TM wave in the other region at the same time. All theoretical analysis results have been verified by using COMSOL Multiphysics simulation software.