利用时域有限差分法,模拟THz波在由单缺陷、双缺陷及三缺陷形成不同结构的光子晶体上下载滤波器中的电磁场分布及幅频特性,研究中发现了一些未报道过的新现象,如L形谐振腔结构可以同时上下载3个频率,从而使单缺陷、双缺陷及L形三缺陷分别满足单、双和三频点上下载滤波的要求.研究结果为进一步提高器件的复用效率及新型光子晶体功能器件的研制提供了有益的参考.
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