无源光纤探针在爆轰实验中的应用

利用熔石英在冲击作用下发光的特性开发了一种测量冲击到达时间的无源光纤探针技术。当冲击波阵面到达光纤探针端面时会产生一个瞬时光信号，这个光信号经光纤传输到光电探测器，变换为电信号后由示波器记录，通过判读就可以知道冲击波阵面到达光纤探针的时刻。该探针无需外加信号源，响应时间可达亚纳秒，抗电磁干扰，可对非金属材料进行直接测量。目前，该探针在爆轰实验测试中得到了大量的应用，本文给出了利用光纤探针测量LY12样品中的冲击波速度、电炮加载的Mylar膜飞片的平面性以及GI-920炸药的爆轰波形的实验方法和结果。

Application of Passive Fiber-optic Probe to Detonation Experiments

A fiber-optic probe diagnostic system has been developed for measuring shock arrival time by taking advantage of shock-induced luminescence of fused quartz. When the shock front reaches the tip of the fiber probe,an intense optic pulse is produced. The visible pulse is transmitted via fiber to an opto-electrical converter then to oscillograph for recording. The shock arrival times can be gotten by reading the signals recorded in oscillograph. The fiber-probe is passive and electromagnetic interference immun...