Title :
Compensation for Temperature-Dependence of the Faraday Effect by Optical Activity Temperature Shift
Author :
Mihailovic, P.M. ; Petricevic, S.J. ; Radunovic, J.B.
Author_Institution :
Fac. of Electr. Eng., Univ. of Belgrade, Belgrade, Serbia
Abstract :
This paper presents a robust fiber-optic magnetic field, or electric current sensor with temperature compensation. The compensation is based on the optical activity temperature dependence of a Bi12GeO20 crystal. A novel measuring head for this extrinsic fiber-optic sensor is developed. Optical path for temperature measurement passes between optical paths, used to sense the magnetic field, thus ensuring proper temperature sampling. Measurement accuracy is improved from 0.8% to 0.2%.
Keywords :
Faraday effect; fibre optic sensors; magnetic field measurement; magnetic sensors; temperature measurement; temperature sensors; Bi12GeO20; Faraday effect; electric current sensor; extrinsic fiber-optic sensor; measurement accuracy; optical activity temperature; optical activity temperature shift; optical path; robust fiber-optic magnetic field sensor; temperature measurement; temperature sampling; temperature-dependence compensation; Optical fiber sensors; Optical fibers; Optical variables measurement; Temperature measurement; Temperature sensors; Faraday effect; magnetometers; optical fiber sensors; temperature dependence;
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2012.2230322
