Figure 3

(a) Transmission spectra versus different L. The red solid curves are the simulation results and the blue circles are theoretical fittings. The other geometrical parameters are w = 100 nm, d = 600 nm, p = 100 nm. (b) The resonant wavelengths (λ₁, λ₂, λ₃) of TM₁₁, TM₀₁ and TM₁₀ modes versus L. (c–f) The FWHM, Q-factors, FOM and transmission corresponding to the two transparent peaks for different L, respectively. The black curve with squares represents the values of the left peak and the red curve with circles represents the values of the left peak. The fitting parameters are set as κ = 0.01; (L = 380 nm) [λ₁, λ₂, λ₃] = [630, 785, 813] nm, [γ₁, γ₂, γ₃] = [0.002, 0.001, 0.0013]; (L = 390 nm) [λ₁, λ₂, λ₃] = [655, 778, 842]nm, [γ₁, γ₂, γ₃] = [0.002, 0.001, 0.002]; (L = 400 nm) [λ₁, λ₂, λ₃] = [666, 752, 850] nm, [γ₁, γ₂, γ₃] = [0.0015, 0.001, 0.0015]; (L = 410 nm) [λ₁, λ₂, λ₃] = [695, 748, 869] nm, [γ₁, γ₂, γ₃] = [0.001, 0.001, 0.0012]; (L = 420 nm) [λ₁, λ₂, λ₃] = [700, 735, 870] nm, [γ₁, γ₂, γ₃] = [0.0008, 0.001, 0.0008].