Wideband Optical Fiber Magnetic Field Sensor

S. J. Martin; M. A. Butler

doi:10.1117/12.949789

3 January 1986 Wideband Optical Fiber Magnetic Field Sensor

S. J. Martin, M. A. Butler

Proceedings Volume 0566, Fiber Optic and Laser Sensors III; (1986) https://doi.org/10.1117/12.949789
Event: 29th Annual Technical Symposium, 1985, San Diego, United States

Abstract

Optical fibers using pure quartz or quartz doped with rare earth elements have been used as magnetic field sensors [1]. In these sensors Faraday rotation of the optical polarization direction is used as the basis for measuring magnetic field strength. The angle of polarization rotation in the fiber is 0=BUL, where B is magnetic field strength, V is the Verdet constant, and L is the propagation path length. Typically an analyzer is used after the fiber to convert polarization rotation into intensity modulation.

Citation Download Citation

S. J. Martin and M. A. Butler "Wideband Optical Fiber Magnetic Field Sensor", Proc. SPIE 0566, Fiber Optic and Laser Sensors III, (3 January 1986); https://doi.org/10.1117/12.949789

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