改进PDMS的高灵敏度C-LPFG丙酮气体传感器研究  

Research on C-LPFG acetone gas sensor with high sensitivity based on improved PDMS

作　　者：宋文超 牛萍娟[1,2] 解媛 石嘉 孙浩 SONG Wenchao;NIU Pingjuan;XIE Yuan;SHI Jia;SUN Hao(School of Electronics and Information Engineering,Tiangong University,Tianjin 300387,China;High Power Semiconductor Lighting Application System Engineering Research Center,Ministry of Education,Tiangong University,Tianjin 300387,China;School of Electrical Engineering,Tiangong University,Tianjin 300387,China)

机构地区：[1]天津工业大学电子与信息工程学院,天津300387 [2]天津工业大学大功率半导体照明应用系统教育部工程研究中心,天津300387 [3]天津工业大学电气工程学院,天津300387

出　　处：《传感器与微系统》2023年第10期17-20,共4页Transducer and Microsystem Technologies

基　　金：天津市教委科研计划资助项目(2019ZD08)。

摘　　要：本文研究了一种基于级联长周期光纤光栅(C-LFPG)丙酮气体传感器。以单个长周期光纤光栅(LPFG)结构为基础,对聚合物敏感涂层聚二甲基硅氧烷(PDMS)折射率变化进行了仿真分析,研究了LPFG和C-LPFG对丙酮气体的灵敏度的影响。结果表明:优化PDMS后C-LPFG传感器的灵敏度约为-605 nm/RIU,相较于传统C-LPFG的灵敏度增大了约6倍,是传统LPFG传感器灵敏度的5.26倍,检测范围扩大了约1.5倍。A kind of acetone gas sensor based on cascaded long-period fiber grating(C-LPFG)is designed.Based on a single long-period fiber grating(LPFG)structure,the refractive index change of polymer sensitive coating polydimethylsiloxane(PDMS)is simulated and analyzed,and the effects of LPFG and C-LPFG on the sensitivity of acetone gas are studied.The results show that the sensitivity of C-LPFG sensor after optimized PDMS is about-605 nm/RIU,which is about 6 times higher than that of traditional C-LPFG sensor,5.26 times higher than that of traditional LPFG sensor,and the detection range is about 1.5 times larger.

关 键 词：级联长周期光纤光栅 聚二甲基硅氧烷 丙酮检测 气体传感器 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]