In this article, a rectangular solid-core photonic crystal fiber (PCF) is proposed as temperature sensor. The air-holes of the PCF have been filled with Ethyl alcohol analyte. The full vector finite element method with perfectly matched layer PML is used to investigate the sensing properties. The proposed sensor is working based on changing of analyte refractive index with temperature. The simulated result shows that the confinement loss decreases from 9.505 to 0.698 dB/km as temperature of analyte increases from 20 to 120 °C at 1.5 µm for PCF of air-holes diameter 2.8 µm and pitch 3 µm. Moreover, this work presents a theoretical interpretation of controlling light within filled PCF by varying temperature.

在本文中，提出了一种矩形的实心光子晶体光纤（PCF）作为温度传感器。PCF的气孔已充满了乙醇分析物。采用具有完美匹配层PML的全矢量有限元方法来研究传感特性。所提出的传感器基于分析物折射率随温度的变化而工作。模拟结果表明，对于气孔直径2.8 µm和节距3 µm的PCF，当分析物的温度从1.5 µm处的20°C升高至120°C时，约束损耗从9.505 dB / km减小。此外，这项工作提出了通过改变温度来控制填充PCF中的光的理论解释。