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Roy, Philippe
XLIM
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Publications (7/7 displayed)
- 2024Optical Fiber pH Sensors Based on PAni-coated Microstructured Optical Fibers
- 2024High-Frequency Vibration Sensor Using a Fiber Laser With a Multicore Fiber Interferometercitations
- 2018Novel transparent glass-ceramic fiber obtained by the powder-in-tube technique
- 2017Simultaneous strain and temperature multipoint sensor based on microstructured optical fibercitations
- 2016Multimaterial glass-ceramic core optical fibers through powder-in-tube process.
- 2013Cladding-pumped high-power mode-locked thulium laser based on fiber prepared by powder sinter technology
- 2012Hollow-core grating fiber
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article
Simultaneous strain and temperature multipoint sensor based on microstructured optical fiber
Abstract
In this paper, a new sensor system for simultaneous and independent multipoint strain and temperature measurements is presented. The interrogation of the sensing heads has been carried out by monitoring their FFT phase variations. In particular, two of each microstructured optical fiber (MOF) cavity interference frequencies were used for the measures. This method is independent of the signal amplitude and also avoids the necessity of tracking the wavelength evolution in the spectrum, which can be a handicap when there are multiple interference frequency components with different sensitivities. The sensing heads present birefringent and multimodal properties and therefore both characteristics lead to their own interference with different properties and sensitivities. The multiplexing capability of the sensing heads and the interrogator method has also been tested and validated. Sensors were operated within a range of temperature 30°C-80°C and a deformation of ~450was applied. Crosstalk between measurements can be corrected through simple math operations leading to independent and crosstalk-free multipoint and multiparameter sensors.