Publication:
Etched and nanocoated SMS fiber sensor for detection of salinity concentration

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Date

2017

Director

Publisher

MDPI
Acceso abierto / Sarbide irekia
Contribución a congreso / Biltzarrerako ekarpena
Versión publicada / Argitaratu den bertsioa

Project identifier

ES/1PE/TEC2016-78047-R

Abstract

An optical fibre refractometer has been developed by etching and deposition of a thin film of indium tin oxide (ITO) on a single-mode-multimode-single-mode (SMS) fibre structure. The interference between modes in this structure is sensitive to the refractive index changes of the surrounding medium, achieving sensitivities of up to 7000 nm/RIU in the 1.333–1.338 RIU range. A salinity sensor has been implemented as a practical application of this proposed structure. Fast Fourier transform (FFT) analysis and tracking of an interference dip were used to monitor the interference between modes obtaining sensitivities of 0.99 nm/PSU and 0.025 rad/PSU, respectively.

Description

Trabajo presentado en la Eurosensors 2017 Conference. París, 3–6 de septiembre de 2017.

Keywords

Etching, Optic fibre sensor, Refractive index, Single-mode–multimode–single-mode (SMS), Thin-films, Salinity

Department

Ingeniería Eléctrica y Electrónica / Ingeniaritza Elektrikoa eta Elektronikoa

Faculty/School

Degree

Doctorate program

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