Optical fiber magnetic field sensor based on magnetic fluid and microfiber mode interferometer

OPTICS COMMUNICATIONS

卷:336

Article

Zheng, Yangzi^1,2  Dong, Xinyong^1,3,4  Chan, Chi Chiu²  Shum, Perry Ping^4,5  Su, Haibin^3,5 

[1] China Jiliang Univ, Inst Optoelect Technol, Hangzhou 310018, Zhejiang, Peoples R China

[2] Nanyang Technol Univ, Sch Chem & Biomed Engn, Div Bioengn, Singapore 637457, Singapore

[3] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore

[4] CINTRA, Singapore 637553, Singapore

[5] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore

关键词: Fiber optics sensor;    Magnetic fluid;    Microfiber;    Magnetic field sensor;   

DOI  :  10.1016/j.optcom.2014.09.026

来源: Elsevier

【 摘 要 】

A magnetic field sensor is proposed based on the combination of magnetic fluid (MF) and an optical microfiber mode interferometer (MMI). It is measured that the MMI is highly sensitive to ambient refractive index (RI) with a high sensitivity up to 16,539 nm/RIU while RI of the MF is changeable with an external magnetic field strength. By monitoring wavelength shift of transmission spectrum of the MMI, magnetic field measurement is realized with a maximum sensitivity of -293 pm/Oe in the range of 0-220 Oe. (C) 2014 Elsevier B.V. All rights reserved.

【 授权许可】

Free