Share Email Print

Proceedings Paper

Fiber optic magnetic field sensor using spectral modulation encoding
Author(s): Michel Lequime; Carole Meunier; Hugues Giovannini
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

This paper is devoted to the description of a new type of fiber optic magnetic field sensor based on spectral modulation encoding techniques. This device uses a Faraday magneto-optic element as transducer and converts the rotation of the plane of polarization of the light induced by the magnetic field into a small change in the large optical path difference provided by a birefringent coding plate. The use of a broadband source and of an interferometric detector, with an optical path difference matched to the sensor one, allows to reach high resolution and perfect down-lead insensitivity. A dual-wavelength arrangement is proposed to determine the temperature and magnetic fied values with the same probe.

Paper Details

Date Published: 1 February 1991
PDF: 7 pages
Proc. SPIE 1367, Fiber Optic and Laser Sensors VIII, (1 February 1991); doi: 10.1117/12.24749
Show Author Affiliations
Michel Lequime, Bertin & Cie (France)
Carole Meunier, Bertin & Cie (France)
Hugues Giovannini, Ecole Nationale Superieure de Physique de Marseille (France)

Published in SPIE Proceedings Vol. 1367:
Fiber Optic and Laser Sensors VIII
Ramon P. DePaula; Eric Udd, Editor(s)

© SPIE. Terms of Use
Back to Top