一、引言用光纤制成的测温计,一般分为两类:一类是传光型,另一类是功能型。前者是将传感元件感受的红外幅射信号通过光纤传输来检测物体的温度。在这种测温方式中,光纤只是作为传输光线的通路,因此称为传光型。后者是利用光纤折射率对温度的敏感特性作成的温度传感器,光纤本身就是传感元 I. INTRODUCTION Thermometers made of optical fiber are generally divided into two categories: one is the light transmission type, and the other is the functional type. The former is the sensor sensing infrared radiation signals transmitted through the optical fiber to detect the temperature of the object. In this temperature measurement mode, the optical fiber is only used as the path for transmitting light, so it is called the light transmission type. The latter is the use of optical fiber refractive index temperature sensitivity of the sensor made, the optical fiber itself is the sensing element