利用在PCF的空气孔中进行温敏液体选择填充时,PCF的温敏特性会受到影响这一原理,提出了一种高温度灵敏度的光子晶体光纤(PCF)。运用有限元法(FEM)对填充温敏液体后的PCF的温敏特性进行分析。从温敏液体的选择及改变光纤结构参数两个方面研究了此光子晶体光纤的温敏特性。研究结果显示,用乙醇选择填充空气孔时,在工作波长为1.55μm时,该PCF的温度灵敏度高达3.37×10~(-5)℃~(-1),研究结论在PCF温度传感器方面有广泛的应用价值。 A PCF with high temperature sensitivity is proposed based on the principle that PCF temperature-sensitive characteristics will be affected when PCF air holes are selectively filled with thermosensitive liquids. The temperature-sensitive properties of PCF filled with thermosensitive liquid were analyzed by finite element method (FEM). The thermosensitive properties of this photonic crystal fiber are studied from two aspects: the choice of temperature-sensitive liquid and the change of fiber structure parameters. The results show that the PCF temperature sensitivity is as high as 3.37 × 10 ~ (-5) ℃ -1 at working wavelength of 1.55μm when ethanol air is used to fill air holes. The conclusions of the study are extensive in PCF temperature sensor The application value.