Fig. 7From: Dichroic Optical Diode Transmission in Two Dislocated Parallel Metallic GratingsThe influence of d on transmission spectra and the isolation contrast ratio. d = 220 nm (a), d = 240 nm (b), and d = 260 nm (c) when s = h = 50 nm, Λ1 = 900 nm, Λ2 = 600 nm, and Δ = 0 nm. The insets are distributions of electric field intensity |E|2 for upward transmission resonancesBack to article page