• Photonic Sensors
  • Vol. 7, Issue 3, 234 (2017)
Qianyu REN1、2, Junhong LI3, Yingping HONG1、2, Pinggang JIA1, and Jijun XIONG1、2、*
Author Affiliations
  • 1Science and Technology on Electronic Test & Measurement Laboratory, North University of China, Taiyuan, 030051, China
  • 2Key Laboratory Instrumentation Science & Dynamic Measurement, Ministry of Education, North University of China, Taiyuan, 030051, China
  • 3Department of Automation, Shanxi University, 030006, China
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    DOI: 10.1007/s13320-017-0409-1 Cite this Article
    Qianyu REN, Junhong LI, Yingping HONG, Pinggang JIA, Jijun XIONG. An Arc Tangent Function Demodulation Method of Fiber-Optic Fabry-Perot High-Temperature Pressure Sensor[J]. Photonic Sensors, 2017, 7(3): 234 Copy Citation Text show less

    Abstract

    A new demodulation algorithm of the fiber-optic Fabry-Perot cavity length based on the phase generated carrier (PGC) is proposed in this paper, which can be applied in the high-temperature pressure sensor. This new algorithm based on arc tangent function outputs two orthogonal signals by utilizing an optical system, which is designed based on the field-programmable gate array (FPGA) to overcome the range limit of the original PGC arc tangent function demodulation algorithm. The simulation and analysis are also carried on. According to the analysis of demodulation speed and precision, the simulation of different numbers of sampling points, and measurement results of the pressure sensor, the arc tangent function demodulation method has good demodulation results: 1 MHz processing speed of single data and less than 1% error showing practical feasibility in the fiber-optic Fabry-Perot cavity length demodulation of the Fabry-Perot high-temperature pressure sensor.
    Qianyu REN, Junhong LI, Yingping HONG, Pinggang JIA, Jijun XIONG. An Arc Tangent Function Demodulation Method of Fiber-Optic Fabry-Perot High-Temperature Pressure Sensor[J]. Photonic Sensors, 2017, 7(3): 234
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