Figure 3
Admittance diagrams of the B (a, d, g), G (b, e, h), and R (c, f, i) colored structures at the wavelengths of 431 nm, 525 nm, 671 nm where a maximum reflectance occurs. Black circles represent starting points of the admittance and black x marks describe the termination points of the admittance. The admittance loci are determined by the thickness and the refractive index of the constituent layers of the structure, where Ag, WO3 #1, Cr, and WO3 #2 are denoted by blue, orange, green, and red colors.
