Fiber-optic liquid level monitoring system using microstructured polymer fiber Bragg grating array sensors:performance analysis


A highly sensitive liquid level monitoring system based on microstructured polymer optical fiber Bragg grating (mPOFBG) array sensors is reported for the first time. The configuration is based on five mPOFBGs inscribed in the same fiber in the 850 nm spectral region, showing the potential to interrogate liquid level by measuring the strain induced in each mPOFBG embedded in a silicone rubber (SR) diaphragm, which deforms due to hydrostatic pressure variations. The sensor exhibits a highly linear response over the sensing range, a good repeatability, and a high resolution. The sensitivity of the sensor is found to be 98 pm/cm of water, enhanced by more than a factor of 9 when compared to an equivalent sensor based on a silica fiber around 1550 nm. The temperature sensitivity is studied and a multi-sensor arrangement proposed, which has the potential to provide level readings independent of temperature and the liquid density.

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Divisions: College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
Additional Information: C. A. F. Marques ; A. Pospori ; D. Sáez-Rodríguez ; K. Nielsen ; O. Bang and D. J. Webb, "Fiber optic liquid level monitoring system using microstructured polymer fiber Bragg grating array sensors: performance analysis", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96345V (September 28, 2015). Copyright 2015 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. DOI: Funding: Marie Curie Intra European Fellowships included in the 7th Framework Program of the European Union (projects PIEF-GA-2013-628604 and PIEF-GA-2011-302919); People Programme (Marie Curie Actions) of the European Union's Seventh Framework Programme FP7/2007-2013/ under REA grant agreement No. 608382.
Event Title: 24th international conference on Optical Fibre Sensors
Event Type: Other
Event Dates: 2015-09-28 - 2015-10-02
Uncontrolled Keywords: biber Bragg gratings,high sensitivity,liquid level monitoring systems,polymer optical fiber sensors,Applied Mathematics,Computer Science Applications,Electrical and Electronic Engineering,Electronic, Optical and Magnetic Materials,Condensed Matter Physics
ISBN: 978-1-6284-1839-2
Last Modified: 20 Feb 2024 08:24
Date Deposited: 23 Nov 2015 12:50
Full Text Link: http://proceedi ... ticleid=2442082
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Conference contribution
Published Date: 2015-09-28
Authors: Marques, C.A.F.
Pospori, A. (ORCID Profile 0000-0003-4866-1361)
Sáez-Rodríguez, D.
Nielsen, K.
Bang, O.
Webb, D.J. (ORCID Profile 0000-0002-5495-1296)



Version: Published Version

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