FBG current sensor based on CVMM demodulation

被引：0
作者：
Zhao, Hong [1 ]
Xiong, Yanling [1 ]
Zhang, Jian [2 ]
Zhao, Haijun [1 ]
机构：
[1] Harbin Univ Sci & Technol, 52 Xuefu Rd, Harbin 150080, Peoples R China
[2] Harbin Normal Univ, Harbin 150080, Peoples R China
来源：
FUNDAMENTAL PROBLEMS OF OPTOELECTRONICS AND MICROELECTRONICS III, PTS 1 AND 2 | 2007年 / 6595卷
关键词：
fiber Bragg grating; giant magnetostrictive material; CWDM; AC sensing;
D O I：
10.1117/12.726495
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
An AC current sensing system by using a Giant Magnetostrictive Material (GMM) rod to modulate a Fiber Bragg Grating (FBG) is established to modify traditional current sensor. A dynamic strain model of GMM actuator is established and a demodulation method based on the linear webbing of Coarse Wavelength Division Multiplexer(CWDM) is proposed in this paper. Experiments at 50Hz AC current are carried out to testify the validity of the system, the results of which are in accordance with the theoretical simulation. The current sensitivity of the system is 144mV/A and the minimum detectable current is 70mA.
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页数：6
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