本论文对基于M-Z干涉型光纤传感器的原理进行了深入探究，分析各类光纤的

In this paper, the principle of the MZ interference-type optical fiber sensor is deeply explored, the advantages and disadvantages of various optical fibers are analyzed, and the uniqueness of the PCF used in the experiment is introduced. In the research based on MZ interference caused by fiber misalignment fusion, in order to improve the sensitivity of the sensor, the D-groove was etched using the side polishing method and SCA was programmed to detect the smaller amount of environmental changes, and a MZ misalignment D Type PCF refractive index sensor with high sensitivity.

本论文对基于M-Z干涉型光纤传感器的原理进行了深入探究，分析各类光纤的优缺点，并介绍了实验所用的PCF的独特之处。在基于光纤错位熔接引起M-Z干涉的研究中，为了提高传感器的灵敏度，利用侧面抛磨的方法并编程SCA刻蚀了D型槽，检测更微小的环境变化量，设计出一种基于M-Z错位D型PCF折射率且具有高灵敏度的传感器。

In this paper, the principle of M-Z interferometric fiber-optic sensor is deeply explored, the advantages and disadvantages of all kinds of fiber are analyzed, and the unique features of PCF used in the experiment are introduced. In the research of M-Z interference caused by optical fiber dislocation fusion, in order to improve the sensitivity of the sensor, a kind of sensor based on M-Z dislocation d-pcf refractive index and high sensitivity is designed by using side polishing method and programming SCA to etch d-groove and detect the smaller environmental change.