Novel optical fiber current sensor based on magnetic fluid

被引：49
|
作者：
Hu, Tao [1 ]
Zhao, Yong [2 ]
Li, Xing [2 ]
Chen, Jingjing [2 ]
Lue, Zhiwei [1 ]
机构：
[1] Harbin Inst Technol, Dept Automat Testing & Control, Harbin 150001, Peoples R China
[2] Northeastern Univ, Coll Informat Sci & Engn, Shenyang 110004, Peoples R China
来源：
CHINESE OPTICS LETTERS | 2010年 / 8卷 / 04期
关键词：
FIELD;
D O I：
10.3788/COL20100804.0392
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A novel fiber optic Fabry-Perot (F-P) current sensor is developed based on magnetic fluid as the medium in F-P interference cavity. A signal demodulation method based on slanted fiber Bragg grating (FBG) wavelength measurement system is proposed. Theory and principle of electromagnetic-controlled refractive index of the magnetic fluid is described; as well as the structure of the sensor system. Preliminary experiments are carried out; and the results indicate that there is a fairly good linearity of the measurement characteristic. The thickness of magnetic fluid film and initial concentration will affect the measurement results.
引用
收藏
页码：392 / 394
页数：3
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