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Proceedings Paper

Magneto-optic Kerr effect sensors for fiber optic applications
Author(s): Steven A. Oliver; Charles A. DiMarzio; Aniruddha B. Kale; Scott C. Lindberg; Stephen W. McKnight
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Paper Abstract

A novel sensor technique using a magnetic thin film as the sensing element and the magneto- optic Kerr effect as the optical read technique has been tested experimentally through magnetic field measurements. Sensitivity results obtained using a simple free space ellipsometry measurement system show a magnetic field sensitivity near 10-3 Oe at low frequencies. Calculations indicate that sensitivities of order 10-6 Oe are possible with improvements in the optical system and the magnetic film sensing element. This technique appears to be implementable in a small fiber optic-compatible device, with foreseen advantages including a very high bandwidth, good thermal stability, and the use of a single optical path.

Paper Details

Date Published: 9 March 1994
PDF: 9 pages
Proc. SPIE 2070, Fiber Optic and Laser Sensors XI, (9 March 1994); doi: 10.1117/12.169948
Show Author Affiliations
Steven A. Oliver, Northeastern Univ. (United States)
Charles A. DiMarzio, Northeastern Univ. (United States)
Aniruddha B. Kale, Northeastern Univ. (United States)
Scott C. Lindberg, Northeastern Univ. (United States)
Stephen W. McKnight, Northeastern Univ. (United States)

Published in SPIE Proceedings Vol. 2070:
Fiber Optic and Laser Sensors XI
Ramon P. DePaula, Editor(s)

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