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首页> 外文期刊>Optical engineering >Highly sensitive optical fiber sensor of carbon monoxide based on Fabry-Perot interferometer and gold-based catalysts
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Highly sensitive optical fiber sensor of carbon monoxide based on Fabry-Perot interferometer and gold-based catalysts

机译：基于法布里-珀罗干涉仪和金基催化剂的一氧化碳高灵敏度光纤传感器

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摘要

A fiber-optic carbon monoxide (CO)-sensing system with high sensitivity was proposed by combining Fabry-Perot interferometer (FPI) sensor with sensing material Au/ZnO. The sensitivity is 814 pm/% within the CO concentration range of 0% to 4%. The FPI sensor was fabricated by inserting single-mode fiber into a partially polymer-filled glass capillary to form an air cavity; the length of the air cavity is 76.83 μm. The temper-ature sensitivity of the FPI is -2.7 nm/℃, which provides better conditions for measurement of CO. The catalyst Au/ZnO was prepared by coprecipitation, which could catalyze the oxidation of CO at ambient temperature and humidity. X-ray diffraction and scanning electron microscope analysis were employed to reveal the crystalline structure and morphology of the catalyst. To eliminate the influence of ambient temperature change on the accu-racy of the concentration test, a fiber Bragg grating with central wavelength of 1550.24 nm was introduced in the experimental Setup for the temperature Compensation.
机译：通过将法布里-珀罗干涉仪（FPI）传感器与传感材料Au / ZnO结合，提出了一种具有高灵敏度的光纤一氧化碳（CO）传感系统。在0％至4％的CO浓度范围内，灵敏度为814 pm /％。通过将单模光纤插入部分填充聚合物的玻璃毛细管中形成空气腔来制造FPI传感器；气腔的长度为76.83μm。 FPI的温度敏感性为-2.7 nm /℃，为CO的测定提供了更好的条件。共沉淀法制备了Au / ZnO催化剂，该催化剂可在环境温度和湿度下催化CO的氧化。 X射线衍射和扫描电子显微镜分析被用来揭示催化剂的晶体结构和形态。为了消除环境温度变化对浓度测试准确性的影响，在实验设置中引入了中心波长为1550.24 nm的光纤布拉格光栅进行温度补偿。

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