Fiber Grating Laser Current Sensor Based on Magnetic Force

被引：39

作者：

Guan, Bai-Ou ^{[1
,2
]}

Wang, Shi-Ning ^{[2
]}

机构：

[1] Jinan Univ, Inst Photon Technol, Guangzhou 510632, Guangdong, Peoples R China

[2] Dalian Univ Technol, PolyU DUT Joint Res Ctr Photon, Dalian 116024, Peoples R China

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2010年 / 22卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Fiber Bragg gratings; fiber lasers; fiber-optic sensors; heterodyne;

D O I：

10.1109/LPT.2009.2037926

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：

A novel fiber-optic current sensor based on a dual-polarization fiber grating laser is proposed and experimentally demonstrated. A permanent magnet exerts transversal force to the dual-polarization fiber grating laser due to the action of a magnetic field produced by an electric current. The transversal force modulates the fiber birefringence and, therefore, the beat frequency between the two polarization modes from the fiber grating laser. The sensor is capable of measuring both dc and ac current, and has advantages of ease of interrogation, absolute frequency encoding, and capability to multiplex a number of sensors on a single fiber.

引用

页码：230 / 232

页数：3

共 13 条

[1] Metal-coated fibre Bragg grating sensor for electric current metering [J].