Compact Surface Fano States Embedded in the Continuum of Waveguide Arrays
Compact Surface Fano States Embedded in the Continuum of Waveguide Arrays
We describe theoretically and observe experimentally the formation of a surface state in a semi-infnite waveguide array with side-coupled waveguide, designed to simultaneously achieve Fano and Fabry-Perot resonances. We demonstrate that the surface mode is compact, with all energy concentrated in few waveguides at the edge and no field penetration …