Modeling and Experimental Characterization of Photonic Bound States in Silicon-on-Insulator Metastructures

We report modeling and experimental characterization results of the propagating photonic bound states in a silicon-on-insulator (SOI) metastructure. The photonic bound states in the metasurface can be excited by the interaction between the discrete resonant modes and the incident wave. The calculated dispersion diagram shows anticrossings with continuous spectral narrowing at surface normal- and oblique-incidence excitations. In the presentation, we will discuss the measured spatial and spectral responses of the reflected beam from the fabricated SOI metastructure.