论文部分内容阅读
利用时域有限差分方法(FDTD)研究了由十二重准周期光子晶体(PQ)局部结构组成的复合二维(2D)光子晶体(PC)及其点缺陷的光学特性。结果表明,由于准周期光子晶体局部结构平移对称性缺失,该复合光子晶体可以通过改变缺陷位置来调节缺陷模的特性,由此具有比周期光子晶体更为丰富的缺陷模式及更灵活的调节方式。同时,研究表明,缺陷模频率与所去除介质柱之间的相互影响强弱具有关联性。通过不同点缺陷腔的组合可以进一步获得灵活多样的缺陷模式。
The optical properties of a complex two-dimensional (2D) photonic crystal (PC) composed of local structures of twelve quasi-quasi-periodic photonic crystals (PQs) and their point defects were studied by using FDTD. The results show that due to the lack of translational symmetry of the local structure of the quasi-periodic photonic crystal, the complex photonic crystal can adjust the properties of the defect mode by changing the position of the defect, thereby having a richer defect mode and a more flexible adjustment mode than the periodic photonic crystal . At the same time, the research shows that there is a correlation between the defect mode frequency and the interaction between the removed columns. Through the combination of different points of defect cavity can be further flexible modes of defects.