Enhanced sensitivity of an all-dielectric refractive index sensor with optical bound state in the continuum
Optics
2022-04-06 v1
Abstract
The sensitivity of a refractive index sensor based on an optical bound state in the continuum is considered. Applying Zel'dovich perturbation theory we derived an analytic expression for bulk sensitivity of an all-dielectic sensor utilizing symmetry protected in- optical bound states in a dielectric grating. The upper sensitivity limit is obtained. A recipe is proposed for obtaining the upper sensitivity limit by optimizing the design of the grating. The results are confirmed through direct numerical simulations.
Keywords
Cite
@article{arxiv.2111.14296,
title = {Enhanced sensitivity of an all-dielectric refractive index sensor with optical bound state in the continuum},
author = {Dmitrii N. Maksimov and Valery S. Gerasimov and Andrey A. Bogdanov and Sergey P. Polyutov},
journal= {arXiv preprint arXiv:2111.14296},
year = {2022}
}