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首页> 外文期刊>Optics Letters >Long-distance simultaneous measurement of strain and temperature based on a fiber Raman laser with a single fiber Bragg grating embedded on a quartz plate
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Long-distance simultaneous measurement of strain and temperature based on a fiber Raman laser with a single fiber Bragg grating embedded on a quartz plate

机译：基于光纤拉曼激光器的远程同时测量应变和温度，该光纤拉曼激光器具有嵌入石英板上的单光纤布拉格光栅

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摘要

We propose and experimentally demonstrate long-distance remote simultaneous measurement of strain and temperature based on a Raman fiber laser with a single fiber Bragg grating embedded on a quartz plate. A Raman fiber laser output with a high extinction ratio of more than approx50 dB is achieved by the fiber grating cavity. In the sensing probe, half of the fiber Bragg grating is fixed steadily on the quartz plate to respond to temperature only, while the other half of the grating is free to respond to both temperature and strain. Based on the proposed scheme, lasing wavelength shift and separation occur with temperature and strain change, respectively. Efficient simultaneous measurement of strain and temperature for long-distance sensing applications of more than 50 km is readily obtained.
机译：我们提出并通过实验演示了基于拉曼光纤激光器的远程远程同时测量应变和温度，该激光器具有嵌入石英板上的单光纤布拉格光栅。光纤光栅腔可实现高消光比超过50 dB的拉曼光纤激光器输出。在传感探头中，布拉格光纤光栅的一半稳固地固定在石英板上，仅对温度响应，而光栅的另一半则对温度和应变均自由响应。基于所提出的方案，随着温度和应变的变化，激光波长发生偏移和分离。对于超过50 km的远距离传感应用，可以同时获得有效的应变和温度同步测量。

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