Magneto-optical garnet materials in fiber optic sensor systems for magnetic field sensing

Kjell G. Svantesson; Hans B. Sohlstrom; Ulf Holm

doi:10.1117/12.20503

1 August 1990 Magneto-optical garnet materials in fiber optic sensor systems for magnetic field sensing

Kjell G. Svantesson, Hans B. Sohlstrom, Ulf Holm

Proceedings Volume 1274, Electro-Optic and Magneto-Optic Materials II; (1990) https://doi.org/10.1117/12.20503
Event: The International Congress on Optical Science and Engineering, 1990, The Hague, Netherlands

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.

Citation Download Citation

Kjell G. Svantesson, Hans B. Sohlstrom, and Ulf Holm "Magneto-optical garnet materials in fiber optic sensor systems for magnetic field sensing", Proc. SPIE 1274, Electro-Optic and Magneto-Optic Materials II, (1 August 1990); https://doi.org/10.1117/12.20503

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