一种基于空芯光子晶体光纤的气体检测装置研究

Research on a Gas Detection Device Based on Hollow-core Photonic Crystal Fiber

光谱分析技术在大气污染检测领域具有广泛的应用前景。文章从吸收光谱的测量原理出发,提出一种基于空芯光子晶体光纤的气体检测装置实验方案,通过对不同浓度的甲醇和三氯乙烯样品进行测量,并根据3标准对测量结果进行分析,发现系统对甲醇和三氯乙烯的检测灵敏度可以达到ppmv量级。

Spectrum analysis technology has a broad prospect of application in air pollutant monitoring field.Based on the principle of absorption spectroscopy,this paper proposed a new experimental scheme of using hollow-core photonic crystal fiber for pollutant detecting in air.By measuring the absorptance of sample gases,such as methanol and trichloroethylene with different concentrations,it is found that the detection sensitivity of our experimental setup can achieve ppmv level according to the 3 sigma criteria.