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Optical Engineering

Optical current sensor using a self-induced light source
Author(s): Jose A. Ferrari; Eugenio Garbusi; Erna M. Frins; César Daniel Perciante
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Paper Abstract

We present a novel optical current sensor architecture based on the Faraday effect. In the proposed sensor, the light source is an incandescent lamp driven by the electric current induced in a small solenoid placed near the conductor carrying the current to be measured. After passing through the sensor head, the light travels in the free space, reaching a photodetector placed some distance away from the conductor carrying the current. The proposed sensor head with its self-induced light source can be constructed as a compact unit. It works autonomously without requiring a precise alignment with additional optics (e.g., polarization-maintaining fibers to carry light to or from the magneto-optical material).

Paper Details

Date Published: 1 September 2004
PDF: 4 pages
Opt. Eng. 43(9) doi: 10.1117/1.1778176
Published in: Optical Engineering Volume 43, Issue 9
Show Author Affiliations
Jose A. Ferrari, PEDECIBA (Uruguay)
Eugenio Garbusi, Instituto de Fisica (Uruguay)
Erna M. Frins, Instituto de Fisica (Uruguay)
César Daniel Perciante, Instituto de Fisica (Uruguay)

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