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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 33, Iss. 25 — Sep. 1, 1994
  • pp: 6111–6122

Reciprocal reflection interferometer for a fiber-optic Faraday current sensor

Guido Frosio and René Dändliker  »View Author Affiliations


Applied Optics, Vol. 33, Issue 25, pp. 6111-6122 (1994)
http://dx.doi.org/10.1364/AO.33.006111


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Abstract

A reciprocal fiber-optic reflection interferometer for remote measurement of electrical current through the Faraday effect is described. The effects of polarization cross coupling because of nonideal elements are eliminated with a low-coherence source. Nonreciprocal birefringence phase modulation is employed for detection of the Faraday phase shift. The theoretical predictions are confirmed by measurements with a piece of straight fiber as the sensing element in a 100-turn solenoid. Currents from 0 to 40 A have been measured with a linear response and a noise limit of 0.015 A / Hz .

© 1994 Optical Society of America

History
Original Manuscript: July 8, 1993
Revised Manuscript: March 2, 1994
Published: September 1, 1994

Citation
Guido Frosio and René Dändliker, "Reciprocal reflection interferometer for a fiber-optic Faraday current sensor," Appl. Opt. 33, 6111-6122 (1994)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-33-25-6111

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