Zhu Mengshi, Murayama Hideaki, Wada Daichi, Kageyama Kazuro
Opt Express. 2017 Feb 20;25(4):4000-4017. doi: 10.1364/OE.25.004000.
By both simulation and experiment, we studied the relationship of the measurement accuracy and the birefringence of the distributed simultaneous strain and temperature sensor using polarization-maintaining fiber Bragg gratings (PANDA-FBGs). The PANDA-FBGs were applied to an optical frequency domain reflectometry (OFDR) which is capable of distributed measurement at high spatial resolution and sampling rate. The simulated results had agreement with the experimental results that the measurement accuracy of both strain and temperature were improved by increasing the birefringence. Additionally, the efficiency of the accuracy improvements decreased when accuracy increased.
通过模拟和实验，我们研究了使用保偏光纤布拉格光栅（熊猫型光纤光栅，PANDA - FBG）的分布式同时测量应变和温度传感器的测量精度与双折射之间的关系。熊猫型光纤光栅被应用于一种光频域反射仪（OFDR），该仪器能够以高空间分辨率和采样率进行分布式测量。模拟结果与实验结果一致，即通过增加双折射，应变和温度的测量精度均得到提高。此外，当精度提高时，精度提高的效率会降低。
