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Abstract <p>The operation of a interrogator fiber sensors based on a Fabry–Perot interferometer (FPI) with a frame update rate of up to 70 kHz is presented. The high performance is achieved due to the combination of a passive optical scheme based on a multichannel arrayed waveguide grating (AWG) and a phase algorithm for data processing. The possibility of high-frequency interrogation of the sensor with an accuracy of <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\({\sim}1\%\)</EquationSource> <!--OptelIns2570056Gaskov-m1--> </InlineEquation> of the measurement range 1% (50 pm) is experimentally demonstrated.</p>

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High-Frequency Interrogator for FPI-Based Fiber Sensors

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • M. P. Gaskov,
  • V. A. Simonov,
  • V. S. Terentyev,
  • I. A. Lobach

摘要

Abstract

The operation of a interrogator fiber sensors based on a Fabry–Perot interferometer (FPI) with a frame update rate of up to 70 kHz is presented. The high performance is achieved due to the combination of a passive optical scheme based on a multichannel arrayed waveguide grating (AWG) and a phase algorithm for data processing. The possibility of high-frequency interrogation of the sensor with an accuracy of \({\sim}1\%\) of the measurement range 1% (50 pm) is experimentally demonstrated.