8 September 2010 Acoustically modulated long period grating sensor for simultaneous viscosity and density measurement
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Proceedings Volume 7653, Fourth European Workshop on Optical Fibre Sensors; 76530Y (2010) https://doi.org/10.1117/12.865334
Event: (EWOFS'10) Fourth European Workshop on Optical Fibre Sensors, 2010, Porto, Portugal
Abstract
Acoustic waves, generated by exploiting the acousto-optic effect within silica optical fibres, were used to enhance the sensitivity of a long period grating. Most of the physical parameters measured by using an LPG involve simple linear and passive transformations of spectral shifts. However, by adding a temporal element using acoustic waves, parameters that require dynamic assessment become accessible. In this work we demonstrate the measurement of fluid viscosity by measuring the rise time and acousto-optic efficiency. We show results of sensor characterization and suggest the possibility of monitoring a chemical reaction in real time.
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Roberson A. Oliveira, Roberson A. Oliveira, Masood Naqshbandi, Masood Naqshbandi, Kevin Cook, Kevin Cook, John Canning, John Canning, Alexandre A. P. Pohl, Alexandre A. P. Pohl, } "Acoustically modulated long period grating sensor for simultaneous viscosity and density measurement", Proc. SPIE 7653, Fourth European Workshop on Optical Fibre Sensors, 76530Y (8 September 2010); doi: 10.1117/12.865334; https://doi.org/10.1117/12.865334
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