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Proceedings Paper

Fiber-optic current sensors based on polarization coherence and power scattering in magneto-optical films
Author(s): Alan Y. Hsu; Alex M. Robinson; Richard W. Cernosek
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Paper 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.

Paper Details

Date Published: 3 September 2008
PDF: 8 pages
Proc. SPIE 7070, Optical Technologies for Arming, Safing, Fuzing, and Firing IV, 70700T (3 September 2008); doi: 10.1117/12.793166
Show Author Affiliations
Alan Y. Hsu, Sandia National Labs. (United States)
Alex M. Robinson, Sandia National Labs. (United States)
Richard W. Cernosek, Sandia National Labs. (United States)

Published in SPIE Proceedings Vol. 7070:
Optical Technologies for Arming, Safing, Fuzing, and Firing IV
Fred M. Dickey; Richard A. Beyer, Editor(s)

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