数字式干涉型光纤传感器进行条纹细分的研究

Research on Digital Interferometric Fiber Optic Sensors Using Moire Grating Sub-division Technique

为了提高系统抗干扰能力和实现远距离信号检测，提出了一种与许多文献介绍所不同的新的数字式干涉型光纤传感器系统的构成方案，并有针对性地对正弦性、正交性、等幅性和零电平漂移等问题进行了分析和实验，证明了把成熟的莫尔光栅检测及细分技术应用于本文提出的这种干涉型光纤传感器是可行的．

In order to increase the ability of the system to be free from interference and be able to detect faraway signals,we propose a new scheme of digital interferometric fiber optic sensor system (FOSS),which is different from other related papers.And some analyses and experiments on such problems as sine performance,orthogonality and naught level shifts of the interested signals are made.Consequently,we demonstrate that it is feasible to apply this moire detection and sub_division technique to the interferometric FOSS.