文献类型：期刊文献

英文题名：Signal demodulation algorithm for interference spectrum of fabry-perot cavity with stainless steel diaphragm

作者：Wang, Wenhua[1]; Zhou, Xinlei[2]; Yu, Qingxu[2]; Shi, Wenqing[1]; Xiong, Zhengye[1]; Wu, Weina[3]; Tian, Xiuyun[1]; Fei, Xianxiang[1]

机构：[1] School of Electronic and Information Engineering, Guangdong Ocean University, Zhanjiang, China; [2] School of Optoelectronic Engineering and Instrumentation Science, Dalian University of Technology, Dalian, China; [3] School of Mathematics and Computer, Guangdong Ocean University, Zhanjiang, China

年份：2021

起止页码：175

外文期刊名：2021 IEEE International Conference on Information Communication and Software Engineering, ICICSE 2021

收录：EI(收录号：20211910315965)

语种：英文

外文关键词：Optical variables measurement - Stainless steel - Steel fibers - Cavity resonators - Demodulation - Fabry-Perot interferometers - Fiber optic sensors - Fast Fourier transforms - Optical fibers

外文摘要：In order to improve the resolution and the measurement accuracy of optical fiber sensor based on Fabry-Perot (FP) interference, the demodulation algorithm for the FP interference spectrum is analyzed in this paper. Signal demodulation algorithm directly affects the performance of the FP sensor, such as resolution and measurement accuracy. Combined with the basic structure of the sensor, a high-resolution vernier demodulation algorithm is studied based on fast Fourier transform (FFT) algorithm and minimum mean square error algorithm, which has a resolution of 0.084nm according to the experimental results. Then, the demodulation algorithm is applied to the FP interference optical fiber pressure sensor with stainless steel diaphragm. The test results show that the performance is good in the range of 0-1MPa with the resolution of 2.10×10-4MPa and correlation coefficient of 0.99989. ? 2021 IEEE.