Dependences of PSD Δϕ, ΔΦ, relations Δϕ/ΔΦ, Δϕ/ΔΦ^∼ and energy transmission coefficients T_1,2 of waves 1, 2 on the main layer thickness d₂ (a, c, e), wavelength λ (b, d), parameters (f, h), d_1,3 (g) for various materials of layers 1, 3. The values of parameters are: ε₁ = ε₃ = 2 + 10⁻³ i (a, b); ε₁ = ε₃ = 0.01 + 0.01i (c, d, e, g); d₂ = 39 nm (b, d, f, h); (f, h). The values of parameters for all the graphs are: d_1,3 = 0.25 μm (besides g); λ = 0.63 μm (besides b, d). Figures e and h detail the data in Figures c and f, respectively. The black horizontal dashed line in Figures e, g, h characterize equality to 1 of the corresponding quantities.