An Optical Microfiber Taper Magnetic Field Sensor With Temperature Compensation

We proposed an optical magnetic field sensor with the temperature correction capability, which is based on an optical microfiber taper (OMT) integrated with magnetic fluid. The OMT is fabricated simply by fused tapering and then sealed into a capillary tube filled with magnetic fluid. The sensor is...

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Bibliographic Details
Published in:IEEE sensors journal 2015-09, Vol.15 (9), p.4853-4856
Main Authors: Liu, Zi Jian, Yu, Yong Sen, Zhang, Xuan Yu, Chen, Chao, Zhu, Cong Cong, Meng, Ai Hua, Jing, Shi Mei, Sun, Hong Bo
Format: Article
Language:English
Subjects:
Fiber optic sensors
fiber tapers
magnetic field sensors
Magnetic fields
magnetic fluid
Magnetic liquids
Optical fiber sensors
Optical fibers
Temperature measurement
Temperature sensors
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Summary:We proposed an optical magnetic field sensor with the temperature correction capability, which is based on an optical microfiber taper (OMT) integrated with magnetic fluid. The OMT is fabricated simply by fused tapering and then sealed into a capillary tube filled with magnetic fluid. The sensor is highly sensitive to magnetic field with the sensitivity of 0.171 nm/Oe in the range of 20-70 Oe at room temperature 25 °C. Moreover, there is a linear relationship between the wavelength shift and temperature in the range of 30 °C-80 °C, and a sensitivity of -0.587 nm/°C has been achieved. Based on these experiments, we provided a sensitivity matrix to correct the errors caused by temperature in order to measure magnetic field more accurately.
ISSN:1530-437X
1558-1748
DOI:10.1109/JSEN.2015.2429911