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本文采用与以往研究布拉格（Ｂｒａｇｇ）谐振腔不同的方法，将腔中的波纹反射段当作一段轴对称的渐变截面波导段，利用光滑渐变波导中的耦合波理论，对存在模式耦合的多模情况和不同参数的布拉格谐振腔进行了研究。得到与实验较符合的结果．同时，本文还研究了布拉格谐振腔的品质因素。
In this paper, different from the previous study of Bragg resonators, the corrugated reflection section in the cavity is taken as an axisymmetric tapered section waveguide section. By using the coupled wave theory in the smooth and gradual waveguide, the mode coupling multimode The situation and different parameters of Bragg resonators were studied. Get more in line with the experimental results. At the same time, this paper also studied the quality factor of Bragg resonators.