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MEASUREMENTS OF STRAIN, STRESS AND TEMPERATURE BY USING 1-DIMENSIONAL AND 2-DIMENSIONAL DISTRIBUTED FIBER-OPTIC SENSORS BASED ON SENSING BY POLARIZATION MAINTAINING FIBER OF DISTRIBUTED POLARIZATION CROSSTALK DISTRIBUTION
MEASUREMENTS OF STRAIN, STRESS AND TEMPERATURE BY USING 1-DIMENSIONAL AND 2-DIMENSIONAL DISTRIBUTED FIBER-OPTIC SENSORS BASED ON SENSING BY POLARIZATION MAINTAINING FIBER OF DISTRIBUTED POLARIZATION CROSSTALK DISTRIBUTION
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机译:基于极化保持矩阵的极化保持传感的一维和二维分布式光纤传感器的应变,应力和温度测量
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摘要
Techniques and devices for measuring stress, strain, or temperature based on polarization crosstalk analysis in birefringence optical birefringent media including polarization maintaining fiber. The disclosed techniques and devices can be implemented to measure polarization crosstalk distribution in polarization maintaining fiber by placing the PM fiber in a 1-dimensional or 2-dimensional configuration for sensing temperature, stress or strain in the PM fiber at different locations along the fiber with a high spatial sensing resolution. In some implementations, the disclosed techniques and devices can be implemented to simultaneously measure stress, strain and temperature from analyzing the probe light. For example, both temperature and stress/strain can be simultaneously measured by using the same sensors to extract and separate temperature measurements from stress/strain measurements.
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