基于光子晶体双微腔间接耦合系统的模式分裂现象研究  

Study on the mode splitting phenomenon based on the indirect coupling system of photonic crystal two microcavity

作　　者：马骏 邓超生 MA Jun;DENG Chaosheng(School of Physics and Optoelectronics,Xiangtan University,Xiangtan 411105,China)

机构地区：[1]湘潭大学物理与光电工程学院,湖南湘潭411105

出　　处：《湘潭大学学报（自然科学版）》2022年第6期36-43,52,共9页Journal of Xiangtan University(Natural Science Edition)

摘　　要：该文设计并提出了一种由两个谐振腔和一个光波导组成的光子晶双微腔间接耦合系统,采用时域有限差分法和耦合模理论对系统中的模式分裂现象进行了全光模拟.研究结果表明,通过改变两个谐振腔之间谐振差和相位差可以对模式分裂现象进行调制,模式分裂的特性表明在共振处存在慢光特征的反常色散.同时讨论了系统结构不发生改变的情况下,谐振腔表面折射率改变对模式分裂的影响.A photonic crystal double microcavity indirect coupling system composed of two resonators and an optical waveguide is designed and proposed.The mode splitting phenomenon in the system is simulated by the finite difference time domain method and the coupled mode theory.The results show that the mode splitting phenomenon can be modulated by changing the resonance difference and phase difference between the two resonant cavities.The characteristics of mode splitting indicate that there is an anomalous dispersion with slow light characteristics at the resonance.Finally,the influence of the refractive index change of the resonator surface on the mode splitting without changing the system structure is discussed.

关 键 词：光子晶体微腔 模式分裂 慢光 

分 类 号：O439[机械工程—光学工程]