摘要
以马赫-增德尔光纤干涉仪为对象,分析了双光束干涉检测原理,在此基础上,设计出利用MZ光纤干涉仪构建周界防范装置。系统采用两根单模光纤构成MZ光纤干涉仪的参考臂和传感臂,半导体激光器作为干涉光源并用两个单模Y型光纤耦合器实现激光的分束和合束。通过计算机对激光合束后形成的拍频信号进行快速采集处理,并与特征波形进行匹配、比较和识别从而对防范周界内的入侵情况迅速做出反应。
This paper has analyzes the principle of the dual-beam Interference Detection based on the Mach-Zehnder Optical Fiber Interferometer.A kind of border guard system has designed by means of Mach-Zehnder Optical Fiber Interferometer.ln the system the reference arm and the sensing arm is made up of two single mode fibers and using the semiconductor laser as the Interference source and Y type fiber coupler to realize beam-splitting and beam combination.The beat fre- quency signal after beam combination has been rapidly manipulated through computer-aided fast data acquisition system, with the characteristic waveform matching and information comparison and recognition,the invasive situation of the guarding field could be fully understood.
出处
《工业控制计算机》
2009年第8期36-38,共3页
Industrial Control Computer
关键词
MZ光纤干涉仪
双光束干涉检测
光纤周界防范
半导体激光器
光学拍频信号
mach-zehnder optical fiber interferometer,the dual-beam interference detection,border guard system,semiconductor laser,the beat frequency signal
