摘要
提出了一种基于钯膜的非本征法布里-珀罗光纤氢气传感器的方案。钯在氢气环境中吸收一定量的氢并使其体积膨胀,而传感器腔长在应力的作用下发生变化。分析了其应力的传递过程,建立了法布里-珀罗腔腔长变化与氢浓度关系的数学模型。通过实验研究了该传感器的氢响应特性,理论模型预测的氢气浓度与实验结果吻合。
A new type of hydrogen sensor based on optical fiber extrinsic Fabry-Perot interferometric with palladium film is proposed. When exposed to hydrogen, the palladium absorbs hydrogen and produces a change in the gap length of the sensor. The stress transfer model of the sensor is analyzed and the relationship between the change of Fabry-Perot gap length and hydrogen concentration is constructed. The response of the sensor to hydrogen is measured. The analytical value is close to the experimental result.
出处
《光电子技术》
CAS
北大核心
2010年第1期7-9,15,共4页
Optoelectronic Technology
基金
国家自然科学基金-中国工程物理研究院联合基金资助项目(10776016)
国家自然科学基金资助项目(10950110317)
关键词
氢气传感
光纤传感
钯膜
hydrogen sensor
optical fiber sensor
palladium film
