Combined temperature and strain measurement with a dispersive optical fiber Fourier-transform spectrometer.
Combined temperature and strain measurement with a dispersive optical fiber Fourier-transform spectrometer.
复制标题
使用色散光纤傅里叶变换光谱仪进行温度和应变组合测量。
DOI：
10.1364/ol.19.002167
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发表时间：
1994
期刊：
影响因子：
3.6
通讯作者：
A. Greenaway
中科院分区：
文献类型：
--
作者：
D. A. Flavin;R. McBride;J. Jones;J. G. Burnett;A. Greenaway
本文报道用宽带干涉法同时测量单模光纤中的应变和温度。由氙弧灯照明的马赫-曾德尔干涉仪在一个臂上有一个传感元件。扫描空气路径产生干涉图，这些干涉图由单色参考干涉图校准。从采样干涉图的快速傅立叶变换的相位获得的群延迟和色散的值通过良好条件的矩阵变换而没有相位模糊给出应变和温度。我们获得的测量范围和分辨率为1500 +/- 12微应变和25.0 +/- 0.4 K使用0.8米的传感元件。
We report simultaneous measurement of strain and temperature in single-mode optical fiber by broadband interferometry. A Mach-Zehnder interferometer, illuminated by a xenon-arc lamp, has a sensing element in one arm. Scanning an air path generates interferograms that are calibrated by a monochromatic reference interferogram. Values of group delay and dispersion, obtained from the phase of the fast Fourier transform of the sampled interferogram, give strain and temperature through a well-conditioned matrix transformation without phase ambiguity. We obtained measurement ranges and resolutions of 1500 +/- 12 microstrain and 25.0 +/- 0.4 K using a 0.8-m sensing element.