Dependences of PSD Δϕ, ΔΦ, relations Δϕ/ΔΦ, Δϕ/ΔΦ^∼ and energy transmission coefficients T_1,2 of waves 1, 2 on thicknesses d₂ (a, b, d, e), d_1,3 (c, f) for silver layers 1, 3 and two different wavelengths of the incident wave. The values of the Ag permittivity for λ = 292 nm (a, b, c), 650 nm (d, e, f) are given in the text. The values of parameters are: d_1,3 = 125 nm (a, b), 9 nm (d, e); d₂ = 19 nm (c), 171 nm (f). Figures b and e detail the data in figures a and d, respectively. The black horizontal dashed line in figures b, c, e characterizes equality to 1 of the corresponding quantities.