光学仪器, 2015, 37 (3): 205, 网络出版: 2015-08-25   

基于分段结构的多模光纤倏逝波传感器

Multimode fiber evanescent wave sensor based on segmented structure
作者单位
1 上海理工大学 光电信息与计算机工程学院, 上海200093
2 中国计量学院 光学与电子科技学院, 浙江 杭州310018
摘要
为了实现高灵敏度、低浓度的溶液分析与测量, 提出了一种基于多模光纤的分段式倏逝波传感器。采用有机玻璃板和高抛光PVC管构成光纤支架, 将60/125 μm阶跃多模光纤分段等长度剥除涂覆层后缠绕于光纤支架上, 其无涂覆层部分位于两两PVC管之间, 经过化学腐蚀去除包层后获得60 cm长吸收距离的光纤倏逝波传感器。用不同浓度亚甲基蓝溶液和宽光源对传感器特性进行研究, 实验结果表明, 这种分段式的光纤倏逝波传感器的灵敏度(1.298×10-5 L/mmol)远远优于直形不分段L=6 cm的传感器的灵敏度(1.020×10-2 L/mmol), 同时该传感器保持良好的机械强度, 可以更好地应用于低浓度溶液物质的定性定量分析。
Abstract
In order to achieve the analysis and measurement of high sensitivity, low concentration of solution, a segmented evanescent sensor based on multimode fiber was proposed. The sensor was fabricated with the 60/125 μm step-index multimode optical fiber wrapped around a scaffold. The scaffold was integrated using highly polished PVC pipe. The optical fiber was peeled off the same length coating layer at the same distance and the section peeled off coating layer was between the two PVC pipes. Multimode fiber evanescent wave sensor with the bare core length of 60 cm can be obtained by application of chemical corrosion method. The test was carried out using the methylene blue solution and wide light source for studying the characteristics of sensor. The experimental results showed that the sensitivity (1.298×10-5 L/mmol) of the segmented optical fiber evanescent wave sensor was far better than the sensitivity (1.020×10-2 L/mmol) of 6 cm straight optical fiber evanescent wave sensor. It still had good mechanical strength, and can be applied in qualitative and quantitative analysis of the low concentration solution materials.

沈建华, 许键, 黄杰, 李本冲, 许宏志, 楼俊, 徐贲. 基于分段结构的多模光纤倏逝波传感器[J]. 光学仪器, 2015, 37(3): 205. SHEN Jianhua, XU Jian, HUANG Jie, LI Benchong, XU Hongzhi, LOU Jun, XU Ben. Multimode fiber evanescent wave sensor based on segmented structure[J]. Optical Instruments, 2015, 37(3): 205.

本文已被 1 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!