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报道了一种用一根光纤光栅实现温度与应变同时测量的新方案。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。将其中半个光栅粘于热膨胀系数较大的基底材料上 ,这样 ,两个反射峰便具有不同的温度及应变响应 ,由此实现温度与应变的同时测量。
A new scheme of 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. One half of the grating is attached to the base material with a larger coefficient of thermal expansion so that the two peaks have different temperature and strain responses, thereby enabling simultaneous measurement of temperature and strain.