周期不对称度对单负材料光子晶体透射谱的影响  

Effect of Cycle Asymmetry on the Transmission Spectra of Photonic Crystals with Single Negative

作　　者：韦吉爵[1] 曾国宏[1] 王高峰[1] 何金玲[1] 

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》2016年第5期50-53,共4页Journal of Hechi University

基　　金：广西高校科学技术研究基金资助项目(KY2015YB258);河池学院重点科研基金资助课题(2014ZD-N001);广西区级大学生创新创业训练计划项目(201510605057;201610605056)

摘　　要：利用传输矩阵法理论,研究不对称度对单负材料光子晶体(ACB)m1(BCA)m2透射谱的影响,结果发现:当△m=0和△m=1时,随着两侧周期数增大,禁带宽度逐渐变宽,透射峰带宽逐渐变窄,透射率位置保持不变,△m=0时对应的透射率均为100%,△m=1时对应的透射率则均为42%;当周期不对称度△m逐渐增大时,禁带宽度逐渐变宽,透射峰的位置不变,但透射率迅速下降,并且不对称度增大至△m=3时,透射率下降为零。研究不对称度对单负材料光子晶体透射谱的变化规律,对设计新型光学器件有一定的参考价值。Effect of cycle asymmetry on the transmission spectra with single negative photonic crystals （ACB） ml （BCA） ma was studied with the transfer matrix method. The result shows that when the cycle asymmetry is △ m =0 and △ m = 1, the forbidden band gap gradually widens, but the bandwidth of the transmission peaks is gradually narrows down with the number of cycles of both sides increasing, the position of the transmittance does not change, and the transmittance is 100%, it＇s unchanged for the △m =0,and the transmission is 42%, unchanged for the △ m = 1 ; when the cycle asymmetry A m gradually increases, the band gap gradually widens, the position of transmission peaks keeps the same but the transmittivity declines rapidly and even to zero when the asymmetry in- creases to △m = 3. Effect of cycle asymmetry on the transmission spectra with single negative photonic crystals can provide reference to design new optical modulation device.

关 键 词：单负材料 光子晶体 不对称度 透射谱 

分 类 号：O431[机械工程—光学工程]