Polarization-based branch selection of bound states in the continuum in dielectric waveguide modes anti-crossed by a metal grating

Ryo Kikkawa, Munehiro Nishida, Yutaka Kadoya

We investigate bound states in the continuum (BICs) in a planar dielectric waveguide structure consisting of a gold grating on a dielectric layer with a back layer of metal. In thi…