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 improve the anti-interference ability of the system and realize the long-distance signal detection, a new digital interferometric fiber optic sensor system is proposed, which is different from many literature introduction systems. It is also targeted to the sinusoidal, orthogonality, Such as the amplitude and zero-level drift and other issues were analyzed and experiments show that the mature Moire grating detection and segmentation technology applied to the proposed interference optical fiber sensor is feasible.