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

Volume

13

Issue

2

fYear

2013

fDate

Feb. 2013

Firstpage

832

Lastpage

837

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;

fLanguage

English

Journal_Title

Sensors Journal, IEEE

Publisher

ieee

ISSN

1530-437X

Type

jour

DOI

10.1109/JSEN.2012.2230322

Filename

6361425