基于荧光猝灭原理的光纤溶解O_2传感特性研究  

Study on optical fiber dissolved oxygen sensor based on fluorescence quenching

作　　者：初凤红[1] 蔡海文[2] 瞿荣辉[2] 方祖捷[2] 杨俊杰[1] 

机构地区：[1]上海电力学院计算机与信息工程学院,上海200090 [2]中科院上海光学精密机械研究所信息光学实验室,上海201800

出　　处：《光电子．激光》2009年第8期1074-1076,共3页Journal of Optoelectronics·Laser

基　　金：上海市青年科技启明星计划资助项目(06QA14023);上海市教育委员会科研创新项目(09YZ337;09ZZ185);上海市教育发展基金会晨光计划资助项目(2007CG66)

摘　　要：采用荧光猝灭法检测溶解O2浓度。以邻菲咯啉钌作为荧光指示剂,用溶胶-凝胶法制备含有荧光指示剂的敏感材料,采用塑料光纤作为传感和传光元件,传感头做成U型以提高灵敏度,采用相移法实现对荧光寿命的测定。通过实验得出,溶解O2浓度在10mg/L以下时,荧光指示剂的荧光寿命与溶解O2浓度呈线性关系,实验测得该传感器的检测下限是0.36mg/L,系统的灵敏度为0.02mg/L。Fluorescence quenching technology is used to detect dissolved oxygen concentration.Dichlorotris(1,10-phenanthroline)ruthenium doped in sol-gel as an oxygen indicator is described;plastic optical fiber is used as sensor head to transmit light,in order to increase sensitivity the sensor head is bent into U shaped;the fluorescence lifetime is detected by using phase modulation technique.The experimental results show that the oxygen concentration is linear with fluorescence lifetime when the dissolved oxygen co...

关 键 词：O2传感 塑料光纤 荧光寿命 相移法 

分 类 号：TN253[电子电信—物理电子学]