A high-precision system of fiber Bragg grating tem-perature sensing demodulation based on light power detection

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外文摘要：A system of fiber Bragg grating(FBG)temperature sensing demodulation based on light power detection is proposed in this paper.Compared with the traditional demodulation method based on wavelength scanning,light power detec-tion is more direct and avoids the use of spectrometer.Moreover,the light power in the system is converted into the electrical signal by the receiver optical subassembly(ROSA)and converted to the digital signal.The micro controller unit(MCU)processes the digital signal to realize the real-time temperature monitoring,which avoids the use of optical power meter(OPM).With the advantages of simple structure and low cost,the system is portable and practical.The experimental results show that the linearity coefficients R-square between light power and the sampling voltage are 0.999 08 and 0.998 93 in the temperature range from 10℃to 85℃,respectively.According to the results,the proved sensor has a repeatability error of 1％,a linearity error of 1.35％,and a hysteresis error of 0.7％,which indicates that the system is of high stability and high precision.The experimental results are consistent with the theory,which veri-fies the system's feasibility.

作者：

HUANG Shuyan、HU Xiaohua、ZHANG Hao、CHEN Weijuan、HUANG Youping、FAN Mengyi

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作者单位：

Department of Electronic Information Science,Fujian Jiangxia University,Fuzhou 350108,China

University of Chinese Academy of Sciences,Beijing 100059,China

Fujian Provincial Key Laboratory for Advanced Micro-nano Photonics Technology and Devices,Quanzhou Normal University,Quanzhou 362000,China

基金：

福建省自然科学基金福建省自然科学基金福建省自然科学基金Key Projects of Industry-University Research Joint Innovation in Colleges and Universities in Fujian Province(2021)Fujian Provincial Key Laboratory for Advanced Micronano Photonics Technology and Devices,Smart Home Information Collection aLaboratory for Advanced Sensing Technology of Fujian Jiangxia University

项目编号：

2021J0112252021J0112242020J050632021H6003

出版年：

2022

DOI：

10.1007/s11801-022-2025-6

光电子快报(英文版)

天津理工大学

光电子快报(英文版)

影响因子：0.641

ISSN：1673-1905

年,卷(期)：2022.18(8)

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