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Optical Engineering

Faraday current sensor using space-variant
Author(s): Jorge Luis Flores-Nuñez; Jose A. Ferrari; César Daniel Perciante
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Paper Abstract

A Faraday current sensor using spatially inhomogeneous analyzers is presented. In the proposed optical architecture, the light waves coming from the sensor head travel in free space reaching a space-variant analyzer, and then they are acquired by a (one-or two-dimensional) photodetector array. This allows a full determination of the Faraday rotation induced by the electrical current, even in the case of a nonideal optical system (e.g., analyzer with poor polarization ratio). The proposed method resembles well-known techniques of phase-shifting interferometry. Validation experiments using linearly variant and azimuthal (radial) analyzers are presented and different detection schemes are compared.

Paper Details

Date Published: 1 December 2008
PDF: 6 pages
Opt. Eng. 47(12) 123603 doi: 10.1117/1.3041772
Published in: Optical Engineering Volume 47, Issue 12
Show Author Affiliations
Jorge Luis Flores-Nuñez, Univ. de Guadalajara (Mexico)
Jose A. Ferrari, Univ. de la República (Uruguay)
César Daniel Perciante, Univ. Católica del Uruguay (Uruguay)

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