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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 35, Iss. 1 — Jan. 1, 1996
  • pp: 154–157

Fiber-optic Faraday-effect magnetic-field sensor based on flux concentrators

Merritt N. Deeter  »View Author Affiliations


Applied Optics, Vol. 35, Issue 1, pp. 154-157 (1996)
http://dx.doi.org/10.1364/AO.35.000154


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Abstract

The principles and performance of a fiber-optic Faraday-effect magnetic-field sensor designed around an yttrium-iron-garnet (YIG) sensing element and two flux concentrators are described. The system design exploits the technique of polarization-rotated reflection in which a single polarization-maintaining optical fiber links the sensor head to the optical source and detection system. In the sensing head, ferrite flux concentrators are magnetically coupled to the YIG sensing element to achieve maximum sensitivity. The system exhibits a noise equivalent field of 6 pT/√Hz and a 3-dB bandwidth of ∼ 10 MHz.

© 1996 Optical Society of America

History
Original Manuscript: March 21, 1995
Revised Manuscript: August 29, 1995
Published: January 1, 1996

Citation
Merritt N. Deeter, "Fiber-optic Faraday-effect magnetic-field sensor based on flux concentrators," Appl. Opt. 35, 154-157 (1996)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-35-1-154

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