摘要
针对激光起爆系统可能会出现起爆光路的不完整从而影响正常的起爆,设计了激光起爆系统自相关检测和互相关检测两种不同的光路完整性检测结构,并对两种结构进行了理论分析和对比。结果表明,自相关检测结构可以检测到激光起爆器回馈光纤中回波信号的最小功率为100nW,互相关检测结构能检测到激光起爆器回馈光纤中回波信号的最小功率为0.1nW。在满足检测激光功率最大为0.2mW的条件下,前者不能实现起爆光路完整性的检测,而后者可实现起爆光路完整性的检测。
In order to escape unsuccessful initiation from non-integrity of the optical path in a laser initiation system, both autocorrelation detection and cross-correlation detection were designed and compared. The experimental results show that the lowest detectable power of echo signal of laser initiator feedback fiber is 100nW for autocorrelation detection, 0. 1nW for cross- correlation detection respectively. When the laser power is less than 0.2roW, the integrity of the optical path can be detected with cross-correlation detection, but cannot with autocorrelation detection.
出处
《激光技术》
CAS
CSCD
北大核心
2011年第4期554-558,共5页
Laser Technology
基金
总装"十一五"预先研究基金资助项目
关键词
激光技术
激光起爆
微弱光信号
光纤传能
相关检测
双光纤
laser technique
laser initiator
feeble light signal
fiber delivery energy
correlation detection
dual-fiber
