提出一种波长检测技术实现温度测量的方法,利用FBG传感器对温度等物理量实施监测,具有测试精度高,应用场合不受限制等特点,当环境参数发生变化时,光纤光栅的有效折射率和光栅周期会受到影响,将引起光纤光栅峰值波长的偏移,依据反射光谱结构的变化,可知道其温度的变化趋势。实验测试结果表明,在温度变化0.1°,波长变化1pm,温度和波长具有良好的线性关系。 A method of temperature measurement based on wavelength detection technology is proposed. FBG sensor is used to monitor temperature and other physical quantities, which has the characteristics of high testing accuracy and unlimited application. When the environmental parameters change, the effective refractive index and grating The period will be affected, which will lead to the shift of the peak wavelength of the fiber grating. Based on the change of the reflection spectrum structure, the change trend of the temperature can be known. Experimental results show that there is a good linear relationship between temperature and wavelength at a temperature change of 0.1 ° and a wavelength variation of 1 μm.