All-fiber optical sensor of electrical current with a SPUN fiber sensing element

V. P. Gubin; V. A. Isaev; S. K. Morshnev; A. I. Sazonov; N. I. Starostin; Yu. K. Chamorovsky; A. I. Oussov; S. Yu. Otrokhov

doi:10.1117/12.677697

9 June 2006 All-fiber optical sensor of electrical current with a SPUN fiber sensing element

V. P. Gubin, V. A. Isaev, S. K. Morshnev, A. I. Sazonov, N. I. Starostin, Yu. K. Chamorovsky, A. I. Oussov, S. Yu. Otrokhov

Author Affiliations +

Proceedings Volume 6251, Lasers for Measurements and Information Transfer 2005; 62510P (2006) https://doi.org/10.1117/12.677697
Event: Lasers for Measurements and Information Transfer 2005, 2005, St. Petersburg, Russian Federation

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.

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V. P. Gubin, V. A. Isaev, S. K. Morshnev, A. I. Sazonov, N. I. Starostin, Yu. K. Chamorovsky, A. I. Oussov, and S. Yu. Otrokhov "All-fiber optical sensor of electrical current with a SPUN fiber sensing element", Proc. SPIE 6251, Lasers for Measurements and Information Transfer 2005, 62510P (9 June 2006); https://doi.org/10.1117/12.677697

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