Optical fiber-based evanescent ammonia sensor
Optical fiber-based evanescent ammonia sensor
复制标题
DOI：
10.1016/j.snb.2005.02.015
复制
发表时间：
2005-10-14
影响因子：
8.4
通讯作者：
Duan, YX
中科院分区：
文献类型：
--
作者：
Cao, WQ;Duan, YX
设计并研制了一种基于光纤的气态氨传感器。采用溶胶-凝胶法将敏感染料溴甲酚紫(BCP)固定在置换包覆层中。介绍了该光纤传感器对常温下气态氨气的传感特性。新研制的氨气传感器具有良好的可逆性和重复性。研究了不同载气、气体、氮气和空气对氨气传感器传感性能的影响。以空气为载气的传感器具有最佳的响应时间和灵敏度。为了提高光纤氨传感器的响应时间，采用了提高环境温度的方法，并进行了深入的研究。在55.5℃下，以空气或Ar为载气，获得了10s的快速响应时间。这些实验结果表明，在环境温度略有升高的情况下，可以构建一种快速响应的光纤氨气体传感器。爱思唯尔出版公司(Elsevier B.V.)
An optical fiber-based evanescent gaseous ammonia sensor is designed and developed. The sensing dye, bromocresol purple (BCP), is immobilized in the substitutional cladding using sol-gel process. The sensing properties of the optical fiber sensor to gaseous ammonia at room temperature are presented. This newly developed ammonia sensor exhibits good reversibility and repeatability. The effect of different carrier gases, argon, nitrogen, and air on sensing properties of the ammonia sensor is investigated. The sensor with air as carrier gas has the best response time and sensitivity. In order to improve the response time of the optical fiber evanescent ammonia sensor, an elevated ambient temperature is applied and thoroughly investigated. A fast response time of 10s was obtained at 55.5 degrees C with the carrier gas of air or argon. These experimental results have demonstrated that a fast response optical fiber evanescent gaseous ammonia sensor can be constructed by applying slightly elevated ambient temperature. Published by Elsevier B.V.