UV-induced intrinsic Fabry-Perot interferometric sensors and their multiplexing for temperature and strain sensing
UV-induced intrinsic Fabry-Perot interferometric sensors and their multiplexing for temperature and strain sensing
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DOI：
10.1117/12.658979
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发表时间：
2006-03
期刊：
影响因子：
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通讯作者：
F. Shen;Zhuang Wang;W. Peng;K. Cooper;G. Pickrell;Anbo Wang
中科院分区：
文献类型：
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作者：
F. Shen;Zhuang Wang;W. Peng;K. Cooper;G. Pickrell;Anbo Wang
提出了一种基于紫外光的本征法布里-珀罗干涉（IFPI）光纤传感器和一种准分布式温度和应变传感的频分复用（FDM）方案。我们提出了一个基于光谱的测量系统与扫频激光源测量IFPI传感器的条纹图案串联排列沿着一个单一的光纤。FDM方案基于由连续波光源的频率调制产生的子载波频率的复用。具有不同光程差（OPD）的IFPI传感器将具有不同的子载波频率。我们使用带通滤波器来选择各个频率分量，并使用基于频率估计的信号处理算法来确定每个传感器的OPD。多重温度和应变传感的实验结果证明。讨论了复用系统的性能。
We present UV-induced intrinsic Fabry-Perot interferometric (IFPI) fiber sensors and a frequency-division-multiplexing (FDM) scheme for quasi-distributed temperature and strain sensing. We present a spectrum-based measurement system with a swept laser source to measure the fringe patterns of IFPI sensors serially arranged along a single fiber. The FDM scheme is based on the multiplexing of sub-carrier frequencies generated by the frequency-modulation of a continuouswave light source. IFPI sensors with different optical path differences (OPD) will have different sub-carrier frequencies. We use band pass filters to select individual frequency component and use frequency-estimation based signal processing algorithms to determine the OPD of each sensor. Experimental results for multiplexed temperature and strain sensing are demonstrated. The performance of the multiplexing system is discussed.