Tunable coupling of a hybrid plasmonic waveguide consisting of two identical dielectric cylinders and a silver film
Wang Benli1, , Liang Han1, Li Jiafang2
       

(color online) Propagation length varies with the radius of the cylinders for different HPWs with different gaps (D) of the cylinders and distances between the silver film and the cylinders (h). The inset shows the part of the propagation length of the HPW with h = 50 nm.