Optical fibre Fabry-Pérot interferometer based on inline microcavities for salinity and temperature sensing

Raquel Flores; Ricardo Janeiro; Jaime Viegas

doi:10.1038/s41598-019-45909-2

Optical fibre Fabry-Pérot interferometer based on inline microcavities for salinity and temperature sensing

Raquel Flores
, Ricardo Janeiro
, Jaime Viegas

Electrical Engineering

Research output: Contribution to journal › Article › peer-review

97 Scopus citations

Abstract

This work explores the development of highly sensitive salinity sensors. The demonstrated sensors are based on optical fibres and consist on Fabry-Pérot optical cavities formed by optimized processes that include chemical etching and fusion splicing, on which microfluidic channels are milled by focused ion beam. Two configurations are presented and their performance compared, including a design that makes use of Vernier-effect for the simultaneous measurement of salinity and temperature with high sensitivity. The interrogation of the devices is carried out by spectral measurements using a broadband light source yielding sensitivities to salinity up to 82.61 nm/M, or 6830.0 nm/RIU.

Original language	British English
Article number	9556
Journal	Scientific Reports
Volume	9
Issue number	1
DOIs	https://doi.org/10.1038/s41598-019-45909-2
State	Published - 1 Dec 2019

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title = "Optical fibre Fabry-P{\'e}rot interferometer based on inline microcavities for salinity and temperature sensing",

abstract = "This work explores the development of highly sensitive salinity sensors. The demonstrated sensors are based on optical fibres and consist on Fabry-P{\'e}rot optical cavities formed by optimized processes that include chemical etching and fusion splicing, on which microfluidic channels are milled by focused ion beam. Two configurations are presented and their performance compared, including a design that makes use of Vernier-effect for the simultaneous measurement of salinity and temperature with high sensitivity. The interrogation of the devices is carried out by spectral measurements using a broadband light source yielding sensitivities to salinity up to 82.61 nm/M, or 6830.0 nm/RIU.",

author = "Raquel Flores and Ricardo Janeiro and Jaime Viegas",

note = "Funding Information: This publication is based upon work supported by the Khalifa University of Science and Technology under Award No. CIRA-2018-110. Publisher Copyright: {\textcopyright} 2019, The Author(s).",

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AU - Viegas, Jaime

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AB - This work explores the development of highly sensitive salinity sensors. The demonstrated sensors are based on optical fibres and consist on Fabry-Pérot optical cavities formed by optimized processes that include chemical etching and fusion splicing, on which microfluidic channels are milled by focused ion beam. Two configurations are presented and their performance compared, including a design that makes use of Vernier-effect for the simultaneous measurement of salinity and temperature with high sensitivity. The interrogation of the devices is carried out by spectral measurements using a broadband light source yielding sensitivities to salinity up to 82.61 nm/M, or 6830.0 nm/RIU.

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Optical fibre Fabry-Pérot interferometer based on inline microcavities for salinity and temperature sensing

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