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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/65427

    Title: Creation of tunable absolute bandgaps in a two-dimensional anisotropic photonic crystal modulated by a nematic liquid crystal
    Authors: Liu, Chen-Yang
    Contributors: 淡江大學機械與機電工程學系
    Keywords: Tunable absolute bandgap;Anisotropic photonic crystal;Liquid crystal
    Date: 2008-07
    Issue Date: 2013-07-09 15:31:53 (UTC+8)
    Publisher: Amsterdam: Elsevier BV * North-Holland
    Abstract: Photonic crystals (PCs) have many potential applications because of their ability to control light-wave propagation. We have investigated the tunable absolute bandgap in a two-dimensional anisotropic photonic crystal structures modulated by a nematic liquid crystal. The PC structure composed of an anisotropic-dielectric cylinder in the liquid crystal medium is studied by solving Maxwell's equations using the plane wave expansion method. The photonic band structures are found to exhibit absolute bandgaps for the square and triangular lattices. Numerical simulations show that the absolute bandgaps can be continuously tuned in the square and triangular lattices consisting of anisotropic-dielectric cylinders by infiltrating nematic liquid crystals. Such a mechanism of bandgap adjustment should open up a new application for designing components in photonic integrated circuits.
    Relation: Physics Letters. Section A: General, Atomic and Solid State Physics 372(31), pp.5198-5202
    DOI: 10.1016/j.physleta.2008.06.019
    Appears in Collections:[機械與機電工程學系暨研究所] 期刊論文

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