Nikodem Michal
Department of Optics and Photonics, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland.
Materials (Basel). 2020 Sep 9;13(18):3983. doi: 10.3390/ma13183983.
Thanks to the guidance of an optical wave in air, hollow-core fibers may serve as sampling cells in an optical spectroscopic system. This paper reviews applications of hollow-core optical fibers to laser-based gas sensing. Three types of hollow-core fibers are discussed: Hollow capillary waveguides, photonic band-gap fibers, and negative curvature fibers. Their advantages and drawbacks when used for laser-based trace gas detection are analyzed. Various examples of experimental sensing systems demonstrated in the literature over the past 20 years are discussed.
得益于空气中光波的引导,空心光纤可在光学光谱系统中用作采样池。本文综述了空心光纤在基于激光的气体传感中的应用。讨论了三种类型的空心光纤:空心毛细管波导、光子带隙光纤和负曲率光纤。分析了它们用于基于激光的痕量气体检测时的优缺点。还讨论了过去20年文献中展示的各种实验传感系统实例。