All-fiber optical sensor of electrical current with a SPUN fiber sensing element - art. no. 62510P

被引：4

作者：

Gubin, V. P. ^{[1
]}

Isaev, V. A. ^{[1
]}

Morshnev, S. K. ^{[1
]}

Sazonov, A. I. ^{[1
]}

Starostin, N. I. ^{[1
]}

Chamorovsky, Yu. K. ^{[1
]}

Oussov, A. I. ^{[1
]}

Otrokhov, S. Yu. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Radioengn & Elect, Moscow, Russia

来源：

Lasers for Measurements and Information Transfer 2005 | 2005年 / 6251卷

关键词：

optical current sensor; Faraday effect; spun fiber;

D O I：

10.1117/12.677697

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

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/root Hz, the scale factor error is about 0.5%, the range of measured currents is 0.1A-3000A, and the bandwidth is up to 10 kHz. 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 evaluative relation for the FOCS scale factor error owing to the spectrum instability of light wideband source is given.

引用

页码：P2510 / P2510

页数：9

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