Figure 3. Transmission spectrum of the structures of figure 1 which is comprised of two resonance mode of the maximum possible transmission in the structure in terms of dimension (secondary design): (a) resonator of filter 1 with the radius of r = 210 nm- peak (0.85, 0.897), (b) resonator of filter 2 with the diagonal of D = 594 nm or x-coordinate of vertical edge in 210 nm- peak (0.73, 0.53), (c) resonator of filter 3 with the radius of r = 210 nm- peak (0.78, 0.80), (d) resonator of filter 4 with the radius of r = 240 nm or x-coordinate of vertical edge in 210 nm- peak (0.77, 0.83).
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