基于荧光猝灭原理的光纤爆炸物传感器

基于荧光猝灭原理制备了硝基芳烃类爆炸物浓度测量系统。以放大荧光聚合物MEH-PPV作为荧光指示剂，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，利用相移法实现对荧光寿命的测定。实验测得系统在TNT饱和蒸汽下和没有TNT时相位差约为0。2°。;Explosive detection system is manufactured by fluorescence quenching technology.Amplified fluorescence polymer MEH-PP Visusedas fluorescence quencher;plastic optical fiberis use dassensor head and to transmit light, in order to increase the sensitivity the sensor head is bent in to Ushape; the fluorescence life time is detected by using phase modulation technique.Through experiment it is found that the phased if ference between saturated TNT atmosphere and without TNT is 0.2 degree