【摘要】 通过研究以砷化钾为背景介质周期性排列椭圆孔柱构成的光子晶体,发现在高频率区域,二维三角结构各向同性光子晶体的光子带隙并不随介电常数差单调变化,而是出现了一个极值:0.0503eω(ωe=2πc/a)的完全光子带隙.更多还原

【Abstract】 As a novel and artificial photonic material,photonic crystal possesses unique photonic band gap properties and can manipulate the propagation states of photons.Photonic crystal is important basis for the integrated photonic devices,such as all-optical switching.In this paper we have designed a two-dimensional photonic cystal with a triangle lattice of elliptic cylinders in the KAs backgroud material.Through investigating this photonic crystal’s structure,we found 0.0503 ω_e((ω_e=2πc/a)) PBG in the high region of normalized frequency.更多还原