12 October 2007 Optical current sensor using phase shift algorithms
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Proceedings Volume 6770, Fiber Optic Sensors and Applications V; 677017 (2007); doi: 10.1117/12.735034
Event: Optics East, 2007, Boston, MA, United States
Abstract
A new fiber-optic current sensor (FOCS) is described which employs phase shifting algorithms to process the optical signal. In this approach the sensing element consists of a coil low birefringence fiber placed between one polarizer and four analyzers. In the polarimeter layout, the output light from the current sensing element is divided into four beams through three nonpolarizing beamsplitters, and in each beam path is placed an analyzer and a detector. This paper discusses the characteristics of the optical current sensors, specifically for relaying applications were measurement of fault current is required. The design of the sensor, results and shift algorithms for electrical current characterization will be presented.
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Jorge L. Flores, Guillermo García-Torales, Víctor H. Ortiz, "Optical current sensor using phase shift algorithms", Proc. SPIE 6770, Fiber Optic Sensors and Applications V, 677017 (12 October 2007); doi: 10.1117/12.735034; http://dx.doi.org/10.1117/12.735034
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KEYWORDS
Sensors

Phase shifts

Fiber optics sensors

Detection and tracking algorithms

Polarimetry

Distortion

Polarizers

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