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9 March 1994 Magneto-optic Kerr effect sensors for fiber optic applications
Steven A. Oliver; Charles A. DiMarzio; Aniruddha B. Kale; Scott C. Lindberg; Stephen W. McKnight
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Proceedings Volume 2070, Fiber Optic and Laser Sensors XI; (1994) https://doi.org/10.1117/12.169948
Event: Optical Tools for Manufacturing and Advanced Automation, 1993, Boston, MA, United States
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.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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Steven A. Oliver, Steven A. Oliver, Charles A. DiMarzio, Charles A. DiMarzio, Aniruddha B. Kale, Aniruddha B. Kale, Scott C. Lindberg, Scott C. Lindberg, Stephen W. McKnight, Stephen W. McKnight, } "Magneto-optic Kerr effect sensors for fiber optic applications", Proc. SPIE 2070, Fiber Optic and Laser Sensors XI, (9 March 1994); doi: 10.1117/12.169948; https://doi.org/10.1117/12.169948
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