ORCID Identifier(s)

Sun, Yuze - orcid.org/0000-0001-5149-2277

Document Type

Article

Source Publication Title

Sensors

First Page

1

Last Page

12

DOI

10.1038/s41598-017-10653-y

Abstract

High sensitivity (S) and high quality factor (Q) are desirable to achieve low detection limit in label-free optical sensors. In this paper, we theoretically demonstrate that single-layer and coupled bi-layer photonic crystal slabs (PCS) possess simultaneously high S and high Q near the bound states in the continuum (BIC). We theoretically achieved S > 800 nm/RIU and Q > 107 in refractive index sensing in the 1400–1600 nm telecom optical wavelength bands. We experimentally demonstrated an S of 94 nm/RIU and a Q of 1.2 x 104, with a detection limit of 6 X10 -5 refractive index unit. These sensor designs can find applications in biochemical sensing, environmental monitoring, and healthcare.

Publication Date

8-11-2017

Language

English

Comments

This work was supported by US NSF under Grant No. ECCS-1407947 and US ARO W911NF-15-1-0431.

Department of Electrical Engineering, The University of Texas at Arlington

License

Creative Commons Attribution 4.0 International License
This work is licensed under a Creative Commons Attribution 4.0 International License.

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