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基于平面波展开法,以介电常数分别为1F/m和12F/m的物质构成三角晶格二维光子晶体,改变空气孔半径r与晶格常数a之间的大小,数值模拟得到了三角晶格二维光子晶体横磁模带隙,当r=.4α时形成三处三角晶格二维光子晶体横磁模的带隙,其中最大三角晶格二维光子晶体横磁模带隙出现在0.6766—0.8000Hz,差值为0.1234Hz。研究结论为光子晶体器件的制作提供参考。
Based on the plane wave expansion method, the triangular lattice 2D photonic crystals were formed by the material with dielectric constant of 1F / m and 12F / m respectively, and the size of air hole radius r and lattice constant a were changed. Two-dimensional photonic crystal lattice transverse magnetic mode band gap, when r = .4α form three triangular lattice two-dimensional photonic crystal transverse magnetic mode band gap, the maximum triangular lattice two-dimensional photonic crystal transverse magnetic mode band gap appears 0.6766-0.8000Hz, the difference is 0.1234Hz. The conclusion of the study provides a reference for the fabrication of photonic crystal devices.