Eftimov, T.; Dyankov, G.; Kolev, P.; Vladev, V. A Spectrally Interrogated Polarimetric Optical Fiber Sensor for Current Measurement with Temperature Correction. Sensors2023, 23, 9306.
Eftimov, T.; Dyankov, G.; Kolev, P.; Vladev, V. A Spectrally Interrogated Polarimetric Optical Fiber Sensor for Current Measurement with Temperature Correction. Sensors 2023, 23, 9306.
Eftimov, T.; Dyankov, G.; Kolev, P.; Vladev, V. A Spectrally Interrogated Polarimetric Optical Fiber Sensor for Current Measurement with Temperature Correction. Sensors2023, 23, 9306.
Eftimov, T.; Dyankov, G.; Kolev, P.; Vladev, V. A Spectrally Interrogated Polarimetric Optical Fiber Sensor for Current Measurement with Temperature Correction. Sensors 2023, 23, 9306.
Abstract
We report on the study of the temperature dependence of the response of a BSO crystal based polarimetric current sensor with spectral interrogation. Two possible interrogation schemes are discussed. The spectral dependence of the optical rotation along the crystal caused by temperature and current changes has been investigated and approximate dependences for the sensitivities to current SI and temperature ST have been derived. A mixed term in the response with spectral interrogation has been revealed, the elimination of which is done by tracking wavelength shifts of two distinct extrema in the polarimetric response. A temperature independent second degree equation for the current changes as a function of the spectral shifts has been derived and tested.
Keywords
magnetic field sensor; current sensor; temperature independent measuremenents; polarimetry; fibre optic sensors; spectral interrogation
Subject
Physical Sciences, Optics and Photonics
Copyright:
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