| 大带隙二维三角格子光子晶体结构参数的优化设计 |
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| 引用本文： | 黄爱琴,郑继红,徐邦联,杨毅彪,庄松林. 大带隙二维三角格子光子晶体结构参数的优化设计[J]. 光学技术, 2011, 37(3): 284-289 |
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| 作者姓名： | 黄爱琴 郑继红 徐邦联 杨毅彪 庄松林 |
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| 作者单位： | 1. 上海理工大学光电信息与计算机工程学院,上海,200093
2. 太原理工大学理学院物理系,太原,030024 |
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| 基金项目： | 国家自然科学基金青年基金资助项目(60801041);上海市教委科研创新基金资助项目(09YZ227);上海理工大学研究生创新基金资助项目(JWCXSL1022) |
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| 摘 要： | 光子晶体结构设计优化是理论研究的一个重要内容.运用平面波展开法对圆柱、方柱及正六边柱构造的二维三角格子光子晶体的禁带进行仿真计算,讨论了介质材料分别为GaAs、Si和Ge情况下,柱子形状、旋转角度、填充比的变化对完全光子禁带的影响.发现:对于二维三角格子光子晶体,相对于介质柱,空气柱更易获得完全光子禁带；而相对于圆柱及...
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| 关 键 词： | 光子晶体 光子禁带 平面波展开法(PWM) 最优结构参数 |
Optimization design of structure parameters of 2D triangular lattice for big photonic band gap |
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| HUANG Aiqin , ZHENG Jihong , XU Banglian , YANG Yibiao , ZHUANG Songlin. Optimization design of structure parameters of 2D triangular lattice for big photonic band gap[J]. Optical Technique, 2011, 37(3): 284-289 |
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| Authors: | HUANG Aiqin ZHENG Jihong XU Banglian YANG Yibiao ZHUANG Songlin |
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| Affiliation: | 1(1.University of Shanghai for Science and Technology,School of Optical-electrical and Computer Engineering,Shanghai 200093,China)(2.Department of Physics,College of Science,Taiyuan University of Technology,Taiyuan 030024,China) |
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| Abstract: | Optimization design of photonic crystals is an important content of theoretically investigation.Plan Wave Expansion Method is used to simulate the photonic band gap(PBG) of 2D triangular lattice photonic crystals of circular column and square column and hexagonal column.When the dielectric materials are GaAs,Si and Ge,the influence of rods shape,rotation angle,filling rations on absolute photonic band gap are discussed.Conclusions as blow: For 2D triangular lattice photonic crystals,air rods are easier to obtain absolute PBG than dielectric rods.And compared with circular rods or square rods,hexagonal rods have the biggest complete PBG width: Δmax=0.116(ωa/2πc).In a word,for 2D triangular photonic crystals,the optimum structure is hexagonal air rods,where dielectric is Ge,d/a equals to 0.92,θ equals to 18°.This result can provide theoretical instruction for 2D triangular photonic crystals with big photonic band gap. |
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| Keywords: | photonic crystals photonic band gap plane wave expansion method(PWM) optimum structure parameters |
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