A Study on Different Types of Fiber Coils for Fiber Optic Current Sensors

Lin Yang; Andreas Frank; Robert Wüest; Berkan Gülenaltin; Miklos Lenner; Georg M. Müller; Klaus Bohnert

doi:10.4028/www.scientific.net/KEM.605.283

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 605A Study on Different Types of Fiber Coils for...

A Study on Different Types of Fiber Coils for Fiber Optic Current Sensors

Abstract:

We consider an interferometric fiber optic current sensor with a fiber coil operated in reflection and compare three different techniques to prepare the coil: thermally annealed coils, stress-free packaging of a bare low birefringent fiber in a fused silica capillary, and coils from highly birefringent spun fiber. In particular we theoretically and experimentally investigate how the fiber retarder that generates the near left and right circular light waves in the sensing fiber must be prepared for temperature compensation of the Faraday effect in the three cases. All three methods can achieve accuracy within ±<0.2% over an extended temperature range but they considerably differ in their practical challenges.

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Materials and Applications for Sensors and Transducers III

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Periodical:

Key Engineering Materials (Volume 605)

Pages:

283-286

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.605.283

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Online since:

April 2014

Authors:

Lin Yang, Andreas Frank, Robert Wüest, Berkan Gülenaltin, Miklos Lenner, Georg M. Müller, Klaus Bohnert

Keywords:

Current Measurement, Faraday Effect, Fiber Interferometer, Fiber Optic Sensor

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