Unidirectional plasmonic Bragg reflector based on longitudinally asymmetric nanostructures

Chen Mingsong¹, Pan Lulu^{1, 2}, Lu Yuanfu^{2, †}, Li Guangyuan^{2, ‡}

(a) R + , (b) R − , and (c) ∣ R + − R − ∣ as functions of the nanostructureʼs size w and h. The calculations were performed with N = 4, p = 280 nm, and λ = 800 nm . The blue circle in (c) indicates the location of w and h for the maximum value of ∣ R + − R − ∣ = 0.814 : w = 210 nm, h = 150 nm.