A Fabry-Perot Interferometer Strain Sensor Based on Concave-Core Photonic Crystal Fiber
A Fabry-Perot Interferometer Strain Sensor Based on Concave-Core Photonic Crystal Fiber
复制标题
基于凹芯光子晶体光纤的法布里-珀罗干涉应变传感器
DOI：
10.1109/jlt.2018.2797104
复制
发表时间：
2018-05-15
影响因子：
4.7
通讯作者：
Yao, Yong
中科院分区：
文献类型：
--
作者：
Tian, Jiajun;Jiao, Yuzhu;Yao, Yong
提出并实现了一种基于凹芯光子晶体光纤（CPCF）的高灵敏度法布里-珀罗干涉仪（FPI）应变传感器。FPI是通过将CPCF直接拼接到标准单模光纤上而形成的。采用传统光纤切割器在轴向拉伸条件下切割高数值孔径的实芯光子晶体光纤，制备了CPCF。研制成功了腔长为4.85 μ m、应变灵敏度为31.58 μ m/μ m的FPI应变传感器。该传感器还表现出0.653 pm/℃的低温度灵敏度，降低了拉伸应变和温度之间的交叉灵敏度。所提出的传感器的优点包括简单的制造，高应变灵敏度，和低的温度交叉敏感性，使其具有吸引力的实际应用。
A high-sensitivity Fabry-Perot interferometer (FPI) strain sensor based on a concave-core photonic crystal fiber (CPCF) was proposed and demonstrated. The FPI was formed by directly splicing a CPCF to a standard single-mode fiber. The CPCF was fabricated by cleaving a high-numerical-aperture solid-core photonic crystal fiber under axial tension using a traditional fiber cleaver. An FPI strain sensor with a cavity length of 4.85 mu m and a strain sensitivity of 31.58 pm/mu epsilon was successfully produced. The sensor also demonstrated a low temperature sensitivity of 0.653 pm/degrees C, reducing the cross-sensitivity between tensile strain and temperature. The benefits of the proposed sensor include simple fabrication, high strain sensitivity, and low temperature cross-sensitivity, making it attractive for practical applications.