Distributed Humidity Sensing in Concrete Based on Polymer Optical Fiber

We present a preliminary investigation on distributed humidity monitoring during the drying process of concrete based on an embedded polymer optical fiber (POF). The water dissipated into the POF changes several properties of the fiber such as refractive index, scattering coefficient and attenuation...

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Autores principales:	Xin Lu, Konstantin Hicke, Mathias Breithaupt, Christoph Strangfeld
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	distributed fiber sensor fiber optics material moisture optical time domain reflectometer embedded humidity sensors Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/bb89a49d727c4f40bf437e9e91d7e3b6
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spelling	oai:doaj.org-article:bb89a49d727c4f40bf437e9e91d7e3b62021-11-11T18:46:17ZDistributed Humidity Sensing in Concrete Based on Polymer Optical Fiber10.3390/polym132137552073-4360https://doaj.org/article/bb89a49d727c4f40bf437e9e91d7e3b62021-10-01T00:00:00Zhttps://www.mdpi.com/2073-4360/13/21/3755https://doaj.org/toc/2073-4360We present a preliminary investigation on distributed humidity monitoring during the drying process of concrete based on an embedded polymer optical fiber (POF). The water dissipated into the POF changes several properties of the fiber such as refractive index, scattering coefficient and attenuation factor, which eventually alters the Rayleigh backscattered light. The optical time domain reflectometer (OTDR) technique is performed to acquire the backscattered signal at the wavelengths 650 nm and 500 nm, respectively. Experimental results show that the received signal increases at 650 nm while the fiber attenuation factor clearly increases at 500 nm, as the concrete dries out. In the hygroscopic range, the information retrieved from the signal change at 650 nm agrees well with the measurement result of the electrical humidity sensors also embedded in the concrete sample.Xin LuKonstantin HickeMathias BreithauptChristoph StrangfeldMDPI AGarticledistributed fiber sensorfiber opticsmaterial moistureoptical time domain reflectometerembedded humidity sensorsOrganic chemistryQD241-441ENPolymers, Vol 13, Iss 3755, p 3755 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	distributed fiber sensor fiber optics material moisture optical time domain reflectometer embedded humidity sensors Organic chemistry QD241-441
spellingShingle	distributed fiber sensor fiber optics material moisture optical time domain reflectometer embedded humidity sensors Organic chemistry QD241-441 Xin Lu Konstantin Hicke Mathias Breithaupt Christoph Strangfeld Distributed Humidity Sensing in Concrete Based on Polymer Optical Fiber
description	We present a preliminary investigation on distributed humidity monitoring during the drying process of concrete based on an embedded polymer optical fiber (POF). The water dissipated into the POF changes several properties of the fiber such as refractive index, scattering coefficient and attenuation factor, which eventually alters the Rayleigh backscattered light. The optical time domain reflectometer (OTDR) technique is performed to acquire the backscattered signal at the wavelengths 650 nm and 500 nm, respectively. Experimental results show that the received signal increases at 650 nm while the fiber attenuation factor clearly increases at 500 nm, as the concrete dries out. In the hygroscopic range, the information retrieved from the signal change at 650 nm agrees well with the measurement result of the electrical humidity sensors also embedded in the concrete sample.
format	article
author	Xin Lu Konstantin Hicke Mathias Breithaupt Christoph Strangfeld
author_facet	Xin Lu Konstantin Hicke Mathias Breithaupt Christoph Strangfeld
author_sort	Xin Lu
title	Distributed Humidity Sensing in Concrete Based on Polymer Optical Fiber
title_short	Distributed Humidity Sensing in Concrete Based on Polymer Optical Fiber
title_full	Distributed Humidity Sensing in Concrete Based on Polymer Optical Fiber
title_fullStr	Distributed Humidity Sensing in Concrete Based on Polymer Optical Fiber
title_full_unstemmed	Distributed Humidity Sensing in Concrete Based on Polymer Optical Fiber
title_sort	distributed humidity sensing in concrete based on polymer optical fiber
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/bb89a49d727c4f40bf437e9e91d7e3b6
work_keys_str_mv	AT xinlu distributedhumiditysensinginconcretebasedonpolymeropticalfiber AT konstantinhicke distributedhumiditysensinginconcretebasedonpolymeropticalfiber AT mathiasbreithaupt distributedhumiditysensinginconcretebasedonpolymeropticalfiber AT christophstrangfeld distributedhumiditysensinginconcretebasedonpolymeropticalfiber
_version_	1718431723539136512

Distributed Humidity Sensing in Concrete Based on Polymer Optical Fiber

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