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首页> 外文期刊>Applied Optics >Use of dual-grating sensors formed by different types of fiber Bragg gratings for simultaneous temperature and strain measurements
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Use of dual-grating sensors formed by different types of fiber Bragg gratings for simultaneous temperature and strain measurements

机译：使用由不同类型的光纤布拉格光栅形成的双光栅传感器同时进行温度和应变测量

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摘要

We report on a systematic investigation of the dependence of both temperature and strain sensitivities on the fiber Bragg grating type, including the well-known Type I, Type IIA, and a new type that we have designated Type IA, using both hydrogen-free and hydrogenated B/Ge codoped fibres. We have identified distinct sensitivity characteristics for each grating type, and we have used them to implement a novel dual-grating, dual-parameter sensor device. Three dual-grating sensing schemes with different combinations of grating type have been constructed and compared, and that of a Type IA-Type IIA combination exhibits the best performance, which is also superior to that of previously reported grating-based structures. The characteristics of the measurement errors in such dual-grating sensor systems is also presented in detail.
机译：我们报告了温度和应变敏感性对光纤布拉格光栅类型（包括众所周知的I型，IIA型以及我们指定为IA型的新类型）的依赖，其中使用了无氢和氢氢化的B / Ge共掺杂纤维。我们已经确定了每种光栅类型的独特灵敏度特性，并已使用它们来实现新颖的双光栅双参数传感器设备。已经构造并比较了三种具有光栅类型不同组合的双光栅传感方案，并且IA型IIA型组合具有最佳性能，这也优于以前报道的基于光栅的结构。还详细介绍了这种双光栅传感器系统中的测量误差特征。

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