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Simultaneous Measurement of Curvature Strain and Temperature Using a Twin-Core Photonic Crystal Fiber-Based Sensor

机译:使用双芯光子晶体光纤传感器同时测量曲率应变和温度

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摘要

A novel twin-core photonic crystal fiber-based sensor for simultaneous measurement of curvature, strain and temperature is proposed. The fiber sensor is constructed by splicing the homemade twin-core photonic crystal fiber between two segments of single mode fiber. Affected by the coupling between two cores, the transmission spectrum of the fiber sensor has different wavelength responses to curvature, strain, and temperature. The maximal sensitivities to curvature, strain and temperature are 10.89 nm/m−1, 1.24 pm/με and 73.9 pm/°C, respectively. Simultaneous measurement of curvature, strain and temperature can be achieved by monitoring the wavelength shifts of selected valleys in the transmission spectrum. Contrast experiment based on traditional twin-core fiber is carried out. Experimental results demonstrate that twin-core photonic crystal fiber-based sensor has higher sensitivity and better linearity than traditional twin-core fiber-based sensor.
机译:提出了一种新颖的基于双芯光子晶体光纤的传感器,用于同时测量曲率,应变和温度。光纤传感器是通过将自制的双芯光子晶体光纤拼接在两段单模光纤之间来构造的。受两个纤芯之间耦合的影响,光纤传感器的透射光谱对曲率,应变和温度的波长响应不同。对曲率,应变和温度的最大敏感度分别为10.89 nm / m -1 ,1.24 pm /με和73.9 pm /°C。通过监测透射光谱中选定波谷的波长偏移,可以同时测量曲率,应变和温度。进行了基于传统双芯光纤的对比实验。实验结果表明,双芯光子晶体光纤传感器比传统的双芯光纤传感器具有更高的灵敏度和更好的线性度。

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