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Proceedings Paper

All-fiber optical sensor of electrical current with a SPUN fiber sensing element
Author(s): V. P. Gubin; V. A. Isaev; S. K. Morshnev; A. I. Sazonov; N. I. Starostin; Yu. K. Chamorovsky; A. I. Oussov; S. Yu. Otrokhov
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Paper Abstract

A fiber optic current sensor (FOCS) using the Faraday effect in a fiber coil is presented. The current sensor is realized on the base of the all-fiber low-coherent reflection interferometer. An Erbium-doped fiber superfluorescent radiation source and a sensing SPUN hi-bi fiber coil are applied in the interferometer. The detectivity of the sensor is about 70 mA/square root of Hz, the scale factor error is about ±0.5%, the range of measured currents is 01.A - 3000A, and the bandwidth is up to 10kHz. Some physical and technical sources of the FOCS scale factor errors are studied. It is shown that the normalized optical scale factor of the FOSC is virtually independent of the SPUN fiber length for a given coil diameter. The evaulative relation for the FOCS scale factor error owing to the spectrum instability of light wideband source is given.

Paper Details

Date Published: 9 June 2006
PDF: 9 pages
Proc. SPIE 6251, Lasers for Measurements and Information Transfer 2005, 62510P (9 June 2006); doi: 10.1117/12.677697
Show Author Affiliations
V. P. Gubin, Institute of Radio-engineering and Electronics (Russia)
V. A. Isaev, Institute of Radio-engineering and Electronics (Russia)
S. K. Morshnev, Institute of Radio-engineering and Electronics (Russia)
A. I. Sazonov, Institute of Radio-engineering and Electronics (Russia)
N. I. Starostin, Institute of Radio-engineering and Electronics (Russia)
Yu. K. Chamorovsky, Institute of Radio-engineering and Electronics (Russia)
A. I. Oussov, Institute of Radio-engineering and Electronics (Russia)
S. Yu. Otrokhov, Institute of Radio-engineering and Electronics (Russia)


Published in SPIE Proceedings Vol. 6251:
Lasers for Measurements and Information Transfer 2005

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