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|Title:||Hydrostatic pressure sensing using a polymer optical fibre bragg gratings||Authors:||Kalli, Kyriacos
Johnson, Ian P.
Webb, David J.
|Keywords:||Hydrostatics;Photonic crystals;Optical fibers;Silica;Plastic optical fibers||Category:||Electrical Engineering, Electronic Engineering, Information Engineering||Field:||Engineering and Technology||Issue Date:||2012||Publisher:||Spie Digital Library||Source:||3rd Asia Pacific Optical Sensors Conference; NSW;31 January - February 2012; Sydney||Abstract:||The sensitivity of a fibre Bragg grating (FBG) sensor fabricated in polymer optical fibre (POF) to hydrostatic pressure was investigated for the first time. In this initial investigative work a reflected Bragg response of a FBG fabricated in multimode microstructured POF (MMmPOF) was monitored, whilst the hydrostatic pressure was increased up to 10MPa. Positive sensitivities were observed, meaning a positive wavelength shift to increasing pressure, as opposed to negative sensitivities monitored when using a FBG sensor fabricated in silica optical fibre. The FBG sensors fabricated in the MMmPOF gave fractional changes in wavelength and hence sensitivities of at least 64.05×10 -6/MPa, which is some 25 times larger than the -2.50×10 -6/MPa sensitivity of a FBG sensor fabricated in silica optical fibre that was measured in this work. Furthermore this work highlighted a decrease in sensitivity of the FBG sensor fabricated in the MMmPOF by some 50% by sealing the holes of the mPOF at the tip of the fibre with an adhesive. This offers the potential to tailor the response of the sensor to hydrostatic pressure.||URI:||http://ktisis.cut.ac.cy/handle/10488/7045||DOI:||10.1117/12.914391||Rights:||© 2011 Society of Photo-Optical Instrumentation Engineers (SPIE).||Type:||Conference Papers|
|Appears in Collections:||Δημοσιεύσεις σε συνέδρια/Conference papers|
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