Koo K P, Sigel G H
Opt Lett. 1984 Jun 1;9(6):257-9. doi: 10.1364/ol.9.000257.
A new technique has been demonstrated in the detection of low-frequency or dc magnetic fields in an optical-fiber interferometric sensor using the magnetostrictive approach. This technique permits magnetic-field measurements free of ambiguity associated with hysteresis effects of the material.