High Quality Factor Silicon Membrane Metasurface for Intensity-Based Refractive Index Sensing

Year: 2021

Authors: Tognazzi A., Rocco D., Gandolfi M., Locatelli A., Carletti L., De Angelis C., Bertolotti M.

Autors Affiliation: Univ Brescia, Dipartimento Ingn Informaz, Via Branze 38, I-25123 Brescia, Italy; CNR, Ist Nazl Ott INO, Via Branze 45, I-25123 Brescia, Italy.

Abstract: We propose a new sensing device based on all-optical nano-objects placed in a suspended periodic array. We demonstrate that the intensity-based sensing mechanism can measure environment refractive index change of the order of 1.8×10-6, which is close to record efficiencies in plasmonic devices.

Journal/Review: OPTICS

Volume: 2 (3)      Pages from: 193  to: 199

More Information: This research was funded by the European Commission grant number 899673, by the National Research Council Joint Laboratories program, Project No. SAC.AD002.026 (OMEN) and by Ministero dell’Istruzione, dell’Universita e della Ricerca grant number 2017MP7F8F.
KeyWords: sensing; metasurface; BIC
DOI: 10.3390/opt2030018

Citations: 23
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