Extraordinary characteristics of one-dimensional PT-symmetric ring optical waveguide networks with near-isometric and isometric arms. (18th September 2020)

• Record Type: Journal Article
• Authors: Li, Haiying; Yang, Xiangbo; Wu, Jiaye; Wu, Xuhang
• Is Part Of: Europhysics letters. Volume 131:Number 5(2020)
• Publication Date: 2020-09-18
• Subjects: Physics -- Periodicals; Electronic journals; 530.05
• DOI: 10.1209/0295-5075/131/54001
• Languages: English
• ISSNs: 0295-5075

Abstract

Abstract: We construct one-dimensional -symmetric ring optical waveguide networks with near-isometric and isometric arms and investigate their extraordinary optical properties. It is found that the features for the former and the latter are quite different, although extraordinary ultrastrong transmission and reflection exist in both of them. When the former changes to be the latter, the extraordinary optical properties will all change remarkably, and the fitting formulae are obtained. The bidirectional invisibility only exists in the former and the principle is analyzed. This work may be helpful for designing ultra-narrow optical filters, ultra-sensitive optical switches, and resonant component for high-monochromatic lasing.