Multiple Fano resonances based on all-dielectric metasurface for optical refractive index sensor

Ziang Gao; Shilin Yu; Yusen Wang; Tonggang Zhao

doi:10.1117/12.2616511

8 July 2022 Multiple Fano resonances based on all-dielectric metasurface for optical refractive index sensor

Ziang Gao, Shilin Yu, Yusen Wang, Tonggang Zhao

Proceedings Volume 12283, 2021 International Conference on Optical Instruments and Technology: Micro/Nano Photonics: Materials and Devices; 122830A (2022) https://doi.org/10.1117/12.2616511
Event: 2021 International Conference on Optical Instruments and Technology, 2022, Online Only

Abstract

Fano resonance with high quality (Q) factor is of great significance to enhance the interaction between light and matter. The all-dielectric metasurface has low loss and can be used to realize the Fano resonance with high Q-factor. Herein , we propose a novel metasurface and apply it to the optical refractive index sensor in the near infrared. It consists of a silicon layer based on four rectangular holes and the substrate is silica. By introducing a new rectangular hole, the symmetry of the structure is broken and two new Fano resonance peaks are excited at the same time. The maximum Q-factor is 7709 (at 1304.4 nm). It can be applied to optical refractive index sensor with sensitivity of 296.7 nm/RIU and FOM of 1483.5.

Citation Download Citation

Ziang Gao, Shilin Yu, Yusen Wang, and Tonggang Zhao "Multiple Fano resonances based on all-dielectric metasurface for optical refractive index sensor", Proc. SPIE 12283, 2021 International Conference on Optical Instruments and Technology: Micro/Nano Photonics: Materials and Devices, 122830A (8 July 2022); https://doi.org/10.1117/12.2616511

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available