A Fiber Optic Accelerometer-Magnetometer

A fiber optic accelerometer-magnetometer (FOAM), which can measure acceleration and magnetic field simultaneously, based on fiber laser sensing is proposed. The principle of the FOAM and the theory of the mixed signal of acceleration and magnetic field are presented. To verify the theory, an FOAM wa...

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Bibliographic Details
Published in:Journal of lightwave technology 2017-05, Vol.35 (9), p.1732-1737
Main Authors: Wang, Zhaogang, Zhang, Wentao, Huang, Wenzhu, Liu, Peide, Li, Fang
Format: Article
Language:English
Subjects:
Acceleration
Acceleration measurement
Accelerometers
Fiber accelerometer
fiber laser
Fiber lasers
fiber magnetometer
Fiber optics
Force
Laser beams
Magnetic field measurement
Magnetic fields
Magnetic flux
Magnetometers
optical fiber applications
Optical fiber sensors
Sensitivity
simultaneous measurement
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Summary:A fiber optic accelerometer-magnetometer (FOAM), which can measure acceleration and magnetic field simultaneously, based on fiber laser sensing is proposed. The principle of the FOAM and the theory of the mixed signal of acceleration and magnetic field are presented. To verify the theory, an FOAM was fabricated and tested. The measured acceleration sensitivity and the sensitivity of magnetic flux intensity were 9.75 pm/g (19.78 dB, re: 0 dB = 1 pm/g) within 100-250 Hz, and 0.955 pm/T/mA@725 Hz, respectively, which were close to the theoretical values. A test of simultaneously measuring acceleration and magnetic field was performed. The results show that the responding mixed signal achieves a good SNR. It proves that the function of the sensor has been realized and the theory of mixed signal is reliable.
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2017.2661969