3 September 2008 Fiber-optic current sensors based on polarization coherence and power scattering in magneto-optical films
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Abstract
Fiber-optic sensors for sensing electrical current are attractive due to their inherent immunity to electromagnetic interference. Several groups have shown the use of Faraday rotation in magneto-optical materials as a function of current-induced magnetic field. In this work, fiber-optic sensors based on different mechanisms such as magnetic-fielddependent polarization coherence and power scattering effects in magneto-optical materials are demonstrated. These novel sensor configurations can have advantages in that they exhibit power-independent or polarization-independent operation which can ultimately lead to fewer components and relaxed light source requirements compared to fiber-optic current sensor systems based on Faraday rotation.
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Alan Y. Hsu, Alan Y. Hsu, Alex M. Robinson, Alex M. Robinson, Richard W. Cernosek, Richard W. Cernosek, } "Fiber-optic current sensors based on polarization coherence and power scattering in magneto-optical films", Proc. SPIE 7070, Optical Technologies for Arming, Safing, Fuzing, and Firing IV, 70700T (3 September 2008); doi: 10.1117/12.793166; https://doi.org/10.1117/12.793166
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