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设计了一种新型光子晶体光纤(PCF)磁场和温度传感结构.在光子晶体光纤包层的一个空气孔中填充磁流体,形成定向耦合结构,检测结构的磁场和温度变化.利用全矢量有限元法(FEM)对该传感器特性进行了仿真研究.结果表明,该传感结构可以实现磁场范围为100~250Oe(1Oe=79.58A/m),温度范围为10~60℃的检测,在该范围内磁场和温度的灵敏度最高可达1.10nm/Oe和-3.86nm/℃.
A novel photonic crystal fiber (PCF) magnetic field and temperature sensing structure was designed, and a magnetic fluid was filled in an air hole in the photonic crystal fiber cladding to form a directional coupling structure to detect the magnetic field and temperature change of the structure. (FEM) is used to simulate the sensor characteristics.The results show that the sensing structure can detect the magnetic field in the range of 100 ~ 250Oe (1Oe = 79.58A / m) and the temperature in the range of 10 ~ 60 ℃, The sensitivity of the magnetic field and temperature within the range of up to 1.10nm / Oe and -3.86nm / ℃.