论文部分内容阅读
报道了一种用一根光纤光栅实现温度与应变同时测量的传感方案。用于同时传感温度与应变的光纤光栅写于两种不同光纤的连接处 ,本身具有两个反射峰。由于两种光纤的光热系数不同 ,两个反射峰具有不同的温度响应。通过监测两个反射峰的波长移动便可实现温度与应变的同时测量。
A sensing scheme for simultaneous temperature and strain measurement with a fiber grating is reported. A fiber grating for simultaneous sensing of temperature and strain is written at the junction of two different fibers, itself with two reflection peaks. Due to the difference in solar thermal coefficients between the two fibers, the two reflection peaks have different temperature responses. Simultaneous measurement of temperature and strain can be achieved by monitoring the wavelength shift of the two reflection peaks.