17 November 2014 Simplified design of diaphragm-based fiber optic extrinsic Fabry-Perot accelerometer
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Abstract
A fiber optic Fabry-Perot accelerometer (FOFPA) with diaphragm-mass-collimator (DMC) gathered structure is presented. This design makes the structure more compacts and the manufacturing process more controllable. The operation principle based on Fabry-Perot interference is described. Several tests using intensity demodulation scheme which can control the working point of FOFPA were carried out. Experimental results show that: axis sensitivity of the proposed FOFPA is 36.07 dB (re: 0 dB=1 V/g) with a fluctuation less than 0.9 dB in a frequency bandwidth of 10-125 Hz, the resonant frequency is about 350 Hz, measurement range is about 70 dB@100 Hz. which are much close to theoretical values
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Zhaogang Wang, Wentao Zhang, Jing Han, Wenzhu Huang, Fang Li, "Simplified design of diaphragm-based fiber optic extrinsic Fabry-Perot accelerometer ", Proc. SPIE 9274, Advanced Sensor Systems and Applications VI, 927417 (17 November 2014); doi: 10.1117/12.2071061; https://doi.org/10.1117/12.2071061
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