1 December 2008 Faraday current sensor using space-variant
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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.
© (2008) Society of Photo-Optical Instrumentation Engineers (SPIE)
Jorge Luis Flores-Nuñez, Jose A. Ferrari, César Daniel Perciante, "Faraday current sensor using space-variant," Optical Engineering 47(12), 123603 (1 December 2008). https://doi.org/10.1117/1.3041772 . Submission:

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