J4 ›› 2010, Vol. 27 ›› Issue (5): 626-631.

• 纤维与波导光学 • 上一篇    下一篇

基于光子晶体多层膜的对称薄膜波导特性研究

廖同庆1, 汪忠柱2,3, ,谢延玉2   

  1. 1 安徽大学电子科学与技术学院, 安徽 合肥 230039;
    2 安徽大学物理与材料科学学院,安徽 合肥 230039; 
    3 安徽省信息材料与器件重点实验室,安徽 合肥 230039
  • 出版日期:2010-09-28 发布日期:2010-08-31
  • 通讯作者: 廖同庆(1976-),安徽宿州人,博士,主要从事光子晶体材料的研究。 E-mail:tongqing7577@sina.com
  • 基金资助:

    安徽省教育厅自然科学基金资助项目(KJ2007B033)

Analysis of symmetry thin-film waveguide stacked symmetrically by photonic crystals multilayer thins

LIAO Tongqing1,  WANG Zhongzhu2,3,  XIE Yanyu2   

  1. 1 College of Electronic Science and Technology, Anhui University, Hefei 230039, China ;
    2 College of Physics and Material Science, Anhui University, Hefei 230039, China;
    3. Anhui key Laboratory of Information Materials and Devices, Anhui University, Hefei 230039, China
  • Published:2010-09-28 Online:2010-08-31

摘要:

研究了一种“光子晶体多层膜+波导层+光子晶体多层膜”对称薄膜波导特性,光子晶体多层膜的第一禁带频率范围为73 THz~99 THz。采用多层介质平板波导理论研究了频率在73 THz~99 THz间的电磁波在波导中的传输特性。结果表明波导传输的是TE0和TM0基模,对于高次模式,不能在波导中传输,另外,频率在73 THz~99 THz间的电磁波在波导层(中心层)的功率约束因子(Γ)在0.99~1之间,即此时电磁波几乎完全局限在波导层内传输,为了比较,处在光子带隙外的频率分别为40 THz和50 THz的电磁波在波导层内的功率约束因子(Γ)分别为0.84和0.86,因此,利用光子带隙特征,由光子晶体多层膜构造的对称薄膜波导具有超低损耗特性。

关键词: 光子晶体波导, 超低损耗, 多层介质波导理论, 功率约束因子, 传输模式

Abstract:

A symmetry thin-film waveguide stacked symmetrically by photonic crystals multilayer thins was investigated, its first stop band of photonic crystal multilayer film lies in the range of 73 THz~99 THz. For the electric-magnetic wave with the frequency range of 73 THz~99 THz, its transmission properties in the waveguide were investigated based on multilayer dielectric waveguide analysis method. The results show that only TE0 and TM0 modes can propagate in guided layer, furthermore, its power constrained factor (Γ) in the guided layer (central layer) is in 0.99~1, in other words, the electromagnetic wave at 73 THz~99 THz is fully constrained in guided layer, for comparison, the power constrained factor (Γ) of electric-magnetic wave with the frequency of 40 THz and 50 THz out of stop band is 0.84 and 0.86, respectively, thus, basing on the stop band properties of photonic crystal, the symmetry thin-film waveguide stacked symmetrically by photonic crystals multilayer thins would exhibit with ultra-low attenuation property.

Key words: photonic crystal waveguide, ultra-low attenuation, multilayer dielectric waveguide method, power constrained factor, transmission modes