中文摘要：

对同轴布喇格反射器与圆柱布喇格反射器的比较研究表明，同轴布喇格反射器具有模式选择性更好、几何尺寸更大的优点。数值模拟研究结果显示，当同轴布喇格反射器内外导体柱波纹槽周期相同时，反射率获得最优效果。

英文摘要：

Comparison between the coaxial and cylindrical Bragg reflectors shows that the former has the advantages of better mode selectivity and larger dimensional size. Simulations indicate that the reflectivity of a coaxial Bragg reflector is optimized when the outer and inner conductors have the same corrugation period.