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研究了光子晶体加载矩形谐振腔,针对传统光子晶体加载无法完全抑制模式竞争的问题,提出了特性阻抗和介质加载方法进行改进,完全实现了谐振腔的高次模式的单模工作,为抑制高次模式工作的谐振腔中模式竞争的问题提供了一种新方法.在此基础之上,采用解析方法以及高频仿真软件HFSS,设计了一个采用TM530高次模式工作的传统光子晶体加载的谐振腔,进一步采用了该新方法对其进行改进,并深入分析了采用这种方法抑制模式竞争的物理原因.计算结果表明,新方法能有效抑制模式竞争,实现谐振腔的高次工作模式的单模工作.
Aiming at the problem that the traditional photonic crystal can not completely restrain the mode competition, aiming at the problem that the photonic crystal is loaded with a rectangular resonant cavity, the characteristic impedance and the method of loading the dielectric are proposed to improve the single mode of the high-order mode of the resonant cavity, A new method is provided for the mode competition in the resonant mode of sub-mode operation.On the basis of this, an analytical method and high-frequency simulation software HFSS are used to design a conventional photonic crystal loaded resonant mode using TM530 high-order mode Cavity, the new method is further used to improve it, and the physical reason of using this method to restrain the mode competition is analyzed in depth.The results show that the new method can effectively restrain the mode competition and realize single Mold work.