Particle swarm optimization and its application to the design of a compact tunable guided-mode resonant filter
Wang Dan-Yan, Wang Qing-Kang †
       

(color online) Schematic structure of the tunable filter based on GMR effect, showing (a) three-dimensional view of the structure, and (b) cross sectional view of the element in the XZ plane, with the parameters of nH = 2.5, nS = 1.4, nL = nc = 1, and α = φ = 0°.