THz sensor based on dual-core PCF with defect core in detecting adulteration of olive oil
THz sensor based on dual-core PCF with defect core in detecting adulteration of olive oil
复制标题
DOI：
10.1007/s11082-021-03082-9
复制
发表时间：
2021-07
影响因子：
3
通讯作者：
Shuo Liu;Jing Liu;Yuanwei Li;Jiaxin Zhang
中科院分区：
文献类型：
--
作者：
Shuo Liu;Jing Liu;Yuanwei Li;Jiaxin Zhang
设计了一种双芯缺陷光子晶体光纤结构的马赫-曾德尔干涉传感器，用于太赫兹波段橄榄油中粗精炼或精炼棉籽油含量的检测。本发明对双芯光纤结构中的中心气孔和缺陷芯的半径进行了优化，使掺有不同含量的粗精炼或精炼棉籽油的混合油的相邻透射峰之间的间隔尽可能大，透射谱宽度尽可能小，透射深度尽可能深。得到了谐振频率与掺杂棉籽油含量的线性关系，平均灵敏度分别为5.976 × 10−4THz/%和2.212 × 10−4THz/%。
A Mach–Zehnder interferometric sensor with a dual-core photonic crystal fiber structure with defect cores is designed, which is used to detect the content of crude refined or refined cottonseed oil in olive oil in terahertz band. The radius of the central air holes and the defect cores in the dual-core fiber structure are optimized, so that the interval between adjacent transmission peaks of mixed oil doped with different contents of crude refined or refined cottonseed oil is as large as possible, the transmission spectrum width is as small as possible, and the transmission depth is as deep as possible. The linear relationship between the resonance frequency and the content of doped cottonseed oil is obtained, and the average sensitivities are 5.976 × 10−4THz/% and 2.212 × 10−4THz/%.