Fig. 3

Surface-bound wave at an interface of hyperbolic metamaterial (ε _m with f _Ag  = 0.1) and dielectric (ε _d ) calculated at 1.3 µm wavelength. a Propagation constant (β, left) and propagation length (1/2Im(β), right). b Lateral decay constant (γ, left) and penetration depth (1/Re(γ)), right) in dielectric side (solid) and metamaterial side (dotted). The case of bulk Ag on soda-lime glass (solid, red) is also shown for comparison