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Al Ghamdi, A., Dawson, B., Jose, G. orcid.org/0000-0001-9856-6755 et al. (1 more author) (2023) Remote Non-Invasive Fabry-Pérot Cavity Spectroscopy for Label-Free Sensing. Sensors, 23 (1). 385. ISSN 1424-8220
Abstract
One way of optically monitoring molecule concentrations is to utilise the high sensitivity of the transmission and reflection rates of Fabry-Pérot cavities to changes of their optical properties. Up to now, intrinsic and extrinsic Fabry-Pérot cavity sensors have been considered with analytes either being placed inside the resonator or coupled to evanescent fields on the outside. Here we demonstrate that Fabry-Pérot cavities can also be used to monitor molecule concentrations non-invasively and remotely, since the reflection of light from the target molecules back into the Fabry-Pérot cavity adds upwards peaks to the minima of its overall reflection rate. Detecting the amplitude of these peaks reveals information about molecule concentrations. By using an array of optical cavities, a wide range of frequencies can be probed at once and a unique optical fingerprint can be obtained.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
Keywords: | cavity sensing; optical sensors; photonic sensors |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Physics and Astronomy (Leeds) > Theoretical Physics (Leeds) The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 04 Sep 2023 12:52 |
Last Modified: | 07 Oct 2024 10:59 |
Status: | Published |
Publisher: | MDPI |
Identification Number: | 10.3390/s23010385 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:202879 |
Available Versions of this Item
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Remote Non-Invasive Fabry-Pérot Cavity Spectroscopy for Label-Free Sensing. (deposited 07 Oct 2024 10:58)
- Remote Non-Invasive Fabry-Pérot Cavity Spectroscopy for Label-Free Sensing. (deposited 04 Sep 2023 12:52) [Currently Displayed]