基于光纤F-P可调谐滤波器的有害气体检测方法  

Research on Detection Method of Harmful Gas Based on Optical Fiber Fabry-Perot Tunable Filter

作　　者：于国良[1] 连航[1] 陆星[1] 石俊峰[1] 张宇涵[1] 龚欣[1] 沈贺[1] 徐圣奇[1] 赵佳宇[1] 刘波[1] 刘伟伟[1] 

机构地区：[1]南开大学现代光学研究所,天津300071

出　　处：《航天返回与遥感》2013年第5期29-35,共7页Spacecraft Recovery & Remote Sensing

摘　　要：光谱分析法在气体成分监测领域有着广泛的应用,实现小型紧凑高分辨率的光谱测量装置是热门的研究课题。文章创造性的提出了基于光纤法布里-帕罗(F-P)的可调谐滤波器提高吸收光谱分辨率,为构建紧凑高分辨率的光谱仪提供了一种新的方案。基于光纤F-P的可调谐滤波器成功实现了微型光栅光谱仪(分辨率约1nm)对甲烷吸收光谱的测量,对比无光纤F-P可调谐滤波器直接测量的结果,该方法测得的吸收光谱强度至少提高了一个数量级。此研究成果可用于紧凑高分辨率的星载气体检测仪的研制。Spectrum analysis has a broad prospect of application in gas composition monitoring field. The compact high-resolution gas composition monitoring device has become a subject under intensive investigation. This paper propose a novel solution based on optical fiber Fabry-Perot（F-P） tunable filter in building a compact and high resolution free space optical spectrometer. By using the fiber F-P tunable filter, the absorption spectrum of CH4 is successfully obtained with a miniature grating spectrometer （resolution of about lnm）. Compared with the directly measured results without the optical fiber F-P tunable filter, the intensity of the absorption spectrum has been increased at least an order of magnitude. This research can be used in the development of the compact high-resolution spaceborne gas detector.

关 键 词：光谱分辨率 法布里-帕罗腔 可调谐滤波器 星载 气体检测 

分 类 号：X851[环境科学与工程—环境工程]