Extraordinary transmission and reflection in PT -symmetric two-segment-connected triangular optical waveguide networks with perfect and broken integer waveguide length ratios
Wu Jia-Ye1, 2, Wu Xu-Hang1, Yang Xiang-Bo1, ‡, Li Hai-Ying1
       

Distribution of photonic modes in the network with d 1 : d 2 = 1 : 2 : (a) overall figure; (b)–(d) enlarged figures of (a).