Department of Electric and Electronic Engineering, Universidad Pública de Navarra, Pamplona 31006, Spain.
Sensors (Basel). 2013 Jun 25;13(7):8095-102. doi: 10.3390/s130708095.
A photonic crystal fiber-based sensing head is proposed for strain measurements. The sensor comprises a Hi-Bi PCF sensing head to measure interferometric signals in-reflection. An experimental background study of the sensing head is conducted through an optical backscatter reflectometer confirming the theoretical predictions, also included. A cost effective setup is proposed where a laser is used as illumination source, which allows accurate high precision strain measurements. Thus, a sensitivity of ~7.96 dB/me was achieved in a linear region of 1,200 μe.
提出了一种基于光子晶体光纤的传感头，用于应变测量。该传感器包括一个 Hi-Bi PCF 传感头，用于测量反射中的干涉信号。通过光学背向反射计对传感头进行了实验背景研究，证实了包括理论预测在内的结果。提出了一种具有成本效益的设置，其中使用激光作为照明源，这允许进行准确的高精度应变测量。因此，在 1,200 μe 的线性区域内实现了约 7.96 dB/με 的灵敏度。
