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Peng, Gang-Ding
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Publications (4/4 displayed)
- 2015Highly sensitive liquid level sensor using a polymer optical Bragg grating for industrial applicationscitations
- 2015High performance liquid level monitoring system based on polymer fiber Bragg gratings embedded in silicone rubber diaphragmcitations
- 2015Highly sensitive liquid level monitoring system utilizing polymer fiber Bragg gratingscitations
- 2013A fast response intrinsic humidity sensor based on an etched singlemode polymer fiber Bragg gratingcitations
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article
Highly sensitive liquid level monitoring system utilizing polymer fiber Bragg gratings
Abstract
A novel and highly sensitive liquid level sensor based on a polymer optical fiber Bragg grating (POFBG) is experimentally demonstrated. Two different configurations are studied and both configurations show the potential to interrogate liquid level by measuring the strain induced in a POFBG embedded in a silicone rubber diaphragm, which deforms due to hydrostatic pressure variations. The sensor exhibits a highly linear response over the sensing range and a good repeatability. For comparison, a similar sensor using a FBG inscribed in silica fiber is fabricated, which displays a sensitivity that is a factor of 5 smaller than the POFBG. The temperature sensitivity is studied and a novel multi-sensor arrangement proposed which has the potential to provide level readings independent of temperature and the liquid density.