Bifurcated overtones of one-way localized Fabry–Pérot resonances in parity-time symmetric optical lattices

Gaafer Fatma Nafaa¹, Shen Yaxi¹, Peng Yugui¹, Wu Aimin^{2, †}, Zhang Peng^{3, ‡}, Zhu Xuefeng^{1, 2, 4, §}

(color online) Unidirectional field localization may occur at Fabry–Pérot resonances in a well-designed PT optical resonator.