Multiple Fano resonances driven by bound states in the continuum in an all-dielectric nanoarrays system

被引：13
|
作者：
Xing, Jiaojiao [1 ]
Li, Hao [1 ]
Yu, Shilin [1 ]
Shi, Yan [1 ]
Zhao, Tonggang [1 ]
机构：
[1] Beijing Univ Posts & Telecommun, Sch Elect & Engn, Beijing 100876, Peoples R China
来源：
AIP ADVANCES | 2023年 / 13卷 / 03期
基金：
中国国家自然科学基金;
关键词：
GOOS-HANCHEN SHIFT; EXCITATION;
D O I：
10.1063/5.0134810
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Fano resonance with high Q-factor can greatly enhance the light-matter interaction in all-dielectric metasurface, which is an important condition for developing high-performance micro-/nano-photonics devices. In this paper, we present an all-dielectric metasurface structure composed of nanoarrays to investigate the properties of BIC realization and Fano resonance in the near-infrared spectral region. Four Fano profiles are generated, and two quasi-BIC resonance modes excited by MD appear when the structural symmetry is broken. All the Fano resonances modulation depth close to 100%. The spectral response of the proposed structure is also highly tunable by adjusting the polarization of the incident light and the geometric parameters of the structure. This work may provide a reference for the design of devices, such as biochemical sensing, optical switches, and optical modulators.
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页数：7
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