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Proceedings Paper

Magneto-optical garnet materials in fiber optic sensor systems for magnetic field sensing
Author(s): Kjell G. Svantesson; Hans B. Sohlstrom; Ulf Holm
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Paper Abstract

Magneto-optical garnet materials such as YIG, undoped as well as substituted, exhibit a large Faraday rotation. This fact makes them potentially suitable as sensing elements in fibre optic magnetic field sensor systems. We describe both an intensity based multimode system using bulk materials and a singlemode polarization based system using waveguiding films. A number of different material compositions, such as undoped YIG, (GdGa)- and different Bisubstituted YIG have been used for the sensor elements. Measurement results are presented and discussed. A detection limit in the xT range and a measurement range exceeding 10 have been achieved.

Paper Details

Date Published: 1 August 1990
PDF: 10 pages
Proc. SPIE 1274, Electro-Optic and Magneto-Optic Materials II, (1 August 1990);
Show Author Affiliations
Kjell G. Svantesson, Swedish Institute of Microelec (Sweden)
Hans B. Sohlstrom, Royal Institute of Technology (Sweden)
Ulf Holm, Royal Institute of Technology (Sweden)

Published in SPIE Proceedings Vol. 1274:
Electro-Optic and Magneto-Optic Materials II
Hans Dammann, Editor(s)

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