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二维棋盘格子复式晶格的完全光子带隙研究

汪静丽 陈鹤鸣

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二维棋盘格子复式晶格的完全光子带隙研究

汪静丽, 陈鹤鸣

Study of complete photonic band gap in two-dimensional chessboard of non-Bravais lattice

Wang Jing-Li, Chen He-Ming
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  • 设计了一种棋盘格子复式晶格的二维光子晶体:在二维正方形格子中,把截面为正方形的柱子旋转45°,同时在每个原胞中心引入一个圆形截面的柱子构成的光子晶体结构. 用平面波展开计算棋盘格子复式晶格的完全光子带隙,结果表明:棋盘格子复式晶格的完全光子带隙的Δω/ω比值几乎是普通棋盘格子的5倍,完全光子带隙的个数也增加. 与其他复式结构相比较,发现其最佳的Δω/ω比值是一类粗锐复合结构光子晶体的2.1倍.
    A two-dimensional chessboard of non-Bravais lattice is designed in this paper: the square columns in photonic structure of a two-dimensional square lattice are rotated by 45°,and a cylinder is introduced into the center of each lattice unit cell. The complete photonic band gap in two-dimensional chessboard of non-Bravais lattice is calculated by the plane wave expansion method. The result shows that a gap width to midgap frequency ratio Δω/ω of chessboard non-Bravais lattice is almost 5 times that of the ordinary chessboard lattice, and the number of complete photonic band gaps is increased. Comparaed with other compound lattices, the optimal Δω/ω of chessboard non-Bravais lattice is 2.1 times that of a kind of compound lattices.
    • 基金项目: 江苏省高技术研究计划项目(批准号:BG2005039)资助的课题.
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  • 文章访问数:  8309
  • PDF下载量:  1365
  • 被引次数: 0
出版历程
  • 收稿日期:  2006-04-18
  • 修回日期:  2006-06-26
  • 刊出日期:  2007-01-05

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