期刊
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
卷 63, 期 9, 页码 2210-2214出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIM.2014.2308360
关键词
Fiber Bragg grating (FBG); fiber optic Fabry-Perot (F-P) sensor; magnetic field measurement; magnetic fluid (MF); temperature compensation
资金
- National Natural Science Foundation of China [61273059, 61203206]
- Fundamental Research Funds for the Central Universities [N130104002, N130604006]
- IAPI Fundamental Research Funds [2013ZCX09]
Based on the characteristic of magnetic-controlled refractive index, magnetic fluid was used as a sensitive medium in fiber optic Fabry-Perot (F-P) cavity. Combined with the temperature sensing property of fiber Bragg grating (FBG), a novel fiber optic F-P magnetic field sensor with temperature compensation was proposed. The sensor probe has the advantages of simple structure, low cost, and high magnetic field measurement accuracy. Magnetic field and temperature can be simultaneously measured by the proposed sensor. Sensing mechanism and experimental results indicated that the temperature cross effect on magnetic field measurement can be effectively compensated using a FBG. The maximal magnetic field intensity is up to 600 Gs with a sensitivity of 0.04 nm/Gs and measurement resolution is 0.5 Gs.
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