A novel image-guided FT-IR sensor using chalcogenide glass optical fibers for the detection of combustion gases
A novel image-guided FT-IR sensor using chalcogenide glass optical fibers for the detection of combustion gases
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DOI：
10.1016/j.snb.2015.05.090
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发表时间：
2015-12-01
影响因子：
8.4
通讯作者：
Fang, Zheng
中科院分区：
文献类型：
--
作者：
Dai, Xiaobing;Liu, Xiangyan;Fang, Zheng
设计并实验实现了一种适用于检测燃烧气体的基于光纤的传感器，具有最先进的灵敏度和功能。该系统不仅可以提供成像能力，还可以提供成像引导的视场（FOV）中心的光谱能力。该传感器采用傅里叶变换红外（FT-IR）光谱仪、硫族化物玻璃光纤以及专门设计的红外光学透镜。布鲁克光学提供的特殊套件连接在光谱仪上，用于将来自透镜的红外光束聚焦在光纤入口处。它在真实条件下进行了现场实时测试。由于每种气体都显示出特征的光发射光谱，因此可以通过分析中红外光谱来选择性地定量检测燃烧环境中气体的存在。对基于光谱形状带强度和面积的光谱研究技术进行测试，以找到监测燃烧气体的最有效工具。与实验数据的比较表明，该传感器经过精心设计，可以研究燃烧过程中产生的气体。 (C) 2015 Elsevier B.V. 保留所有权利。
An optical-fiber-based sensor suitable for the detection of combustion gases was designed and experimentally implemented with state-of-the-art sensitivity and capabilities. The system can not only provide imaging capability, but also provide spectral capability of the field of view (FOV) center guided by the imaging. The sensor employs a Fourier transform infrared (FT-IR) spectrometer, coupled with chalcogenide glass optical fiber, and a specially designed infrared optic lens. A special kit provided by Bruker Optics is connected on the spectrometer to focus the infrared beam from the lens at the entry of the fiber. It was tested in situ, in real time, under real-world conditions. Since each gas shows a characteristic optical emission spectrum, it is possible to detect selectively and quantitatively the presence of gases in combustion environment by analyzing mid-IR spectra. Spectral investigation techniques based on spectral shape band intensities and areas are tested to find the most effective tool for monitoring combustion gases. A comparison with experimental data has demonstrated that this sensor is well designed to study gases coming from combustion processes. (C) 2015 Elsevier B.V. All rights reserved.