Díaz Camilo A R, Leitão Cátia, Marques Carlos A, Domingues M Fátima, Alberto Nélia, Pontes Maria José, Frizera Anselmo, Ribeiro Moisés R N, André Paulo S B, Antunes Paulo F C
Telecommunications Laboratory LABTEL, Electrical Engineering Department, Federal University of Espírito Santo, 29075-910 Espírito Santo, Brazil.
Department of Physics & I3N, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
Sensors (Basel). 2017 Oct 23;17(10):2414. doi: 10.3390/s17102414.
Fiber Bragg gratings are widely used optical fiber sensors for measuring temperature and/or mechanical strain. Nevertheless, the high cost of the interrogation systems is the most important drawback for their large commercial application. In this work, an in-line Fabry-Perot interferometer based edge filter is explored in the interrogation of fiber Bragg grating dynamic measurements up to 5 kHz. Two devices an accelerometer and an arterial pulse wave probe were interrogated with the developed approach and the results were compared with a commercial interrogation monitor. The data obtained with the edge filter are in agreement with the commercial device, with a maximum RMSE of 0.05 being able to meet the requirements of the measurements. Resolutions of 3.6 pm and 2.4 pm were obtained, using the optical accelerometer and the arterial pulse wave probe, respectively.
光纤布拉格光栅是广泛用于测量温度和/或机械应变的光纤传感器。然而，询问系统的高成本是其大规模商业应用的最重要缺点。在这项工作中，研究了一种基于在线法布里 - 珀罗干涉仪的边缘滤波器，用于高达5kHz的光纤布拉格光栅动态测量的询问。使用所开发的方法对加速度计和动脉脉搏波探头这两种设备进行了询问，并将结果与商业询问监测器进行了比较。用边缘滤波器获得的数据与商业设备一致，最大均方根误差为0.05，能够满足测量要求。分别使用光学加速度计和动脉脉搏波探头获得了3.6pm和2.4pm的分辨率。
