文中报道了谐振式光纤陀螺中光纤谐振腔的研究工作，首先简述了谐振式光纤陀螺的基本原理，然后对光纤环形腔的谐振特性进行了分析，给出了谐振条件，并且根据系统的性能要求，对陀螺的谐振腔光路系统进行了设计，同时通过数值方法对谐振系统各光学参数进行了优化。最后给出了光学谐振系统的初步实验结果 In this paper, the research work of fiber resonator in resonant fiber gyroscope is reported. The basic principle of resonant fiber gyro is briefly described. Then the resonant characteristics of fiber ring resonator are analyzed. The resonant conditions are given. According to the performance of the system Requirements, the gyroscope cavity optical system design, at the same time through the numerical method of the optical system to optimize the optical parameters. Finally, the experimental results of the optical resonance system are given