一维光子晶体的带隙结构研究  

Study on Bandgap Structure of 1-D Photonic Crystal

作　　者：刘建静[1] 刘锴[2] 吴延昭[1] 武首香[3] 谢宁[1] 

机构地区：[1]天津科技大学理学院,天津300222 [2]西安理工大学理学院,西安710048 [3]天津现代职业技术学院,天津300222

出　　处：《半导体光电》2010年第6期916-918,共3页Semiconductor Optoelectronics

基　　金：天津科技大学科学研究基金资助项目(20090219)

摘　　要：利用时域有限差分法(FDTD)对光子晶体的传输特性进行了研究。计算了不同条件下完整结构阶跃型光子晶体的透过率谱。通过透过率谱的变化,分析了介质层数、介质所占空间配比、介质介电常数比对光子带隙的影响。发现介质层数的增加会使光子带隙拓宽并加深,但是带隙的位置不会移动;介质介电常数比越大,带隙越宽越深,也越容易出现带隙。The transmission properties of photonic crystals were studied with the method of finite-diffirent-time-domain（FDTD）. Transmission spectra of normal perfect periodic 1D photonic crystals with different structures were calculated. According to the variety of the spectrum, the effects of the layers of dielectric, ratio of dielectric and ratio of dielectric constant on the photonic bandgap were analyzed. The research shows that the increase of dielectric layers will widen and deepen the photonic bandgap while the location of the gap will not move and the greater ratio dielectric constant results in wider and deeper bandgap.

关 键 词：光子晶体 时域有限差分法 光子带隙 

分 类 号：O734[理学—晶体学]