Unidirectional reflectionless propagation of near-infrared light in resonator-assisted non-parity-time symmetric waveguides

• Published in: New journal of physics Vol. 23; no. 5; pp. 53015 - 53022
• Main Authors: He, Zhihui, Li, Lingqiao, Cui, Wei, Wang, Yixuan, Xue, Weiwei, Xu, Hui, Yi, Zao, Li, Chunjiang, Li, Zhenxiong
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.05.2021
• Subjects: Coupled modes; Electromagnetic absorption; exceptional points; Finite difference time domain method; Infrared radiation; Matrix theory; metal–insulator–metal waveguides; Parity; parity-time symmetry; Physics; Plasmonics; Propagation; Reflection; Resonators; Wave propagation; Waveguides

Abstract The unidirectional reflectionless (UR) light propagation is investigated in the waveguide coupled to gain and loss resonators by using a developed coupled mode-scattering matrix theory. The results show that there is almost no reflection in the case of the backward incidence, but total refl...