影响双负材料光子晶体能带性能的因素  

Influence Factors on the Properties of Energy Band of Photonic Crystals with Double Negative Material

作　　者：潘继环[1] 黄金玉[1] 蒙息君 

机构地区：[1]河池学院物理与机电工程学院,广西宜州546300

出　　处：《河池学院学报》2014年第5期83-86,共4页Journal of Hechi University

基　　金：广西自然科学基金资助项目(2011GXNSFA018140);广西高校科学技术研究基金资助项目(YB2014323);河池学院重点科研基金资助项目(2014ZD-N001);2014年自治区级大学生创新创业训练计划立项项目(201410605034;201410605025;201410605026)

摘　　要：利用传输矩阵法,通过数值模拟,研究周期不对称度、介质折射率等因素对双负材料光子晶体(AB)m1BCB(BA)m2能带性能的影响,结果发现:当周期不对称度△m=0,且m1=m2=m时,随着周期数m的增大,禁带中心单透射峰带宽逐渐变窄,禁带中心形成一条透射率为100%的超窄透射峰;当周期不对称度△m≠0,且△m逐渐增大时,禁带中心透射峰透射率逐渐降低,且禁带宽度越来越窄;当介质A折射率nA增大时,禁带宽度逐渐变窄,禁带中的透射峰带宽逐渐变宽;而介质B折射率nB逐渐增大时,禁带中心透射峰带宽逐渐变窄,禁带带宽逐渐变宽;当介质C折射率nC随着负值减小时,禁带宽度几乎保持不变,但禁带中透射峰带宽明显变窄。影响双负材料光子晶体能带性能的规律对设计诸如新型光学滤波器、光开关和全反射镜等光学器件有一定参考价值。The effect of factors like asymmetry cycles and refraction index on energy band properties of photonic crystals （AB） m1 BCB （BA） m2 with double - negative material is studied by using transfer matrix and numerical simulation methods. The result shows that the bandwidth of single transmission peak （transmittance is 100% ） in the center of forbidden band is narrowing with the increasing number of cycles as asymmetry cycles △m = 0 and m1 = m2 = m ; when the refraction index nA increases and asymmetry cycles △ m, the transmittance of transmission peak decreases gradually and the bandwidth of forbidden band narrows gradually at same time; when the refraction rate of media A increases, the width of transmission peak is broaden, but the bandwidth is narrowed ; while the refraction index of nB increases, the width of transmission peak narrows gradually, but the bandwidth increases gradually ; when the refraction rate of media C increases, the bandwidth of transmission peak narrows obviously, but the bandwidth of forbidden band shows no change. These properties can provide reference value in designing optical device such as a brand new optical filter, optical switch and completely reflecting mirror etc.

关 键 词：光子晶体 传输矩阵 双负材料 透射谱 

分 类 号：O431[机械工程—光学工程]