| 影响双负材料光子晶体能带性能的因素 |
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| 引用本文： | 潘继环,黄金玉,蒙息君.影响双负材料光子晶体能带性能的因素[J].河池学院学报,2014,34(5):83-86. |
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| 作者姓名： | 潘继环 黄金玉 蒙息君 |
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| 作者单位： | 河池学院物理与机电工程学院,广西宜州,546300 |
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| 基金项目： | 广西自然科学基金资助项目，广西高校科学技术研究基金资助项目，河池学院重点科研基金资助项目，2014年自治区级大学生创新创业训练计划立项项目 |
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| 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。
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| 关 键 词： | 光子晶体 传输矩阵 双负材料 透射谱 |
Influence Factors on the Properties of Energy Band of Photonic Crystals with Double Negative Material |
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| PAN Ji-huan,HUANG Jin-yu,MENG Xi-jun.Influence Factors on the Properties of Energy Band of Photonic Crystals with Double Negative Material[J].Journal of Hechi University,2014,34(5):83-86. |
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| Authors: | PAN Ji-huan HUANG Jin-yu MENG Xi-jun |
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| Institution: | ( School of Physics and Mechanical ＆ Electronic Engineering, Hechi University, Yizhou, Guangxi 546300, China) |
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| Abstract: | 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. |
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| Keywords: | photonic crystal transmission matrix double- negative materials transmission spectrum |
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