裸光纤Bragg光栅的温度传感特性研究

从理论上分析了光纤Bragg光栅的温度传感原理,并通过实验对裸光纤Bragg光栅的常温温度特性进行了测试。实验结果与理论分析基本一致,证明裸光纤Bragg光栅在常温下的中心波长与温度变化呈良好的线性关系,为其用作温度传感器提供了理论和实验依据。最后,指出了光纤Bragg光栅温度传感器在实际工程化应用中所需要解决的问题。

Research on Temperature Sensing Characteristics of Bare Fiber Bragg Grating

The temperature sensing principle of a fiber Bragg grating is analyzed theoretically and the normal temperature characteristics of a bare fiber Bragg grating are tested experimentally.The experimental result coincident with the theoretical conclusion shows that there is a linear relationship between the central wavelength and the temperature variation of a bare fiber Bragg grating at normal temperature.This provides the theoretical and experimental gists for its temperature sensing.Finally, the problems to be solved in the practical application of a fiber Bragg grating sensor are pointed out.