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 : 1 , where SPM represents strong propagation mode, and WPM denotes weak propagation mode. (a) Overall figure; (b) enlarged figure of (a), where GBP indicates generalized breaking point.