English

应用科学学报 ›› 2003, Vol. 21 ›› Issue (3): 236-240.

• 论文 • 上一篇    下一篇

二维介质PBG结构色散特性的时域有限差分法分析

包秀龙1, 章文勋1, 郑龙根1, 李乐伟2   

  1. 1 东南大学毫米波国家重点实验室 江苏 南京 210096;
    2 新加坡国立大学电子工程与计算机科学系 新加坡
  • 收稿日期:2002-06-24 修回日期:2002-12-10 出版日期:2003-09-10 发布日期:2003-09-10
  • 作者简介:包秀龙(1968-),男,安徽贵池人,博士生;章文勋(1937-),男,江苏江阴人.教授,博导;李乐伟(1961-),男,江苏南京人,教授,博导
  • 基金资助:
    国家自然科学基金(60071007);中国-新加坡合作研究(2001.62)资助项目

An Analysis of Dispersion Characteristics in 2-D Dielectric PBG Structure by Using FDTD Method

BAO Xiu-long1, ZHANG Wen-xun1, ZHENG Long-gen1, LI Le-wei2   

  1. 1 State Key Lab of Millimeter Waves, Southeast University, Nanjing 210096, China;
    2 Department of E & C E, National University of Singapore, Singapore
  • Received:2002-06-24 Revised:2002-12-10 Online:2003-09-10 Published:2003-09-10

PDF

86

被引次数

11

摘要： 采用时域有限差分法分析二维介质柱PBG结构的色散特性.计算表明,在介质填充比相同的条件下含单介质柱周期的PBG结构,其介质柱形状对色散特性的影响很小;而含多介质柱周期的PBG结构,TM波的阻带中心频率随介质柱个数的增多而提高,阻带绝对宽度增大,相对宽度相当.

关键词: 光子带隙结构, 时域有限差分法, 色散特性

Abstract: In this paper, the dispersion characteristics in 2-D dielectric PBG structure are analyzed by using FDTD method. The computed κ-ω curves show that under the same ratio of dielectric occupancy in the period cell and in the case of a single dielectric cylinder only, the dispersion curves are not sensitive to the geometry of this cylinder. However, in the case of multiple separat-ed cylinders, the central frequency of TM band-gap rises with the increased number of cylinders, and its relative bandwidth is almost constant.

Key words: dispersion characteristics, PBG structure, finite difference time-domain

中图分类号: