Figure 3.

Responses showed |r_p|² for λ = 633 nm n₀ = 1.52, n₁ = 1.34 with thickness d₁ and n₂ = 0.18344 + 3.4332i with thickness d₂, n₃ = 1.34 (a) d₂ = 150 nm (b) d₂ = 60 nm and (c) d₂ = 30 nm. The colored curves shown in these figures were the interferometric mode positions calculated using Equation (3) and the two plasmonic modes calculated using Equation (2). ‘A’ and ‘B’ were labeled as plasmonic modes calculated using Equation (2). ‘C’, ‘D’ and ‘E’ are labelled as interferometric modes.