Tunable Omnidirectional Reflection Bands and Defect Modes of a One-dimensional Photonic Band Gap Structure with Liquid Crystals

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We have theoretically investigated the tunability of the omnidirectional reflection band (ORB) of a one-dimensional (1D) photonic crystal (PC) consisting of alternating isotropic dielectric and nematic liquid crystal layers by an external electric field. The width of the ORB becomes wide as the external voltage increases, but the center frequency is changed little. The frequency of the defect mode created by inserting a layer of liquid crystals into a 1D dielectric PC is also found to be tunable by the application of external voltage. These properties can be applied to tunable optical filters or optical switches. (C) 2001 American Institute of Physics.
Publisher
Amer Inst Physics
Issue Date
2001-01
Language
English
Article Type
Article
Citation

APPLIED PHYSICS LETTERS, v.79, no.1, pp.15 - 17

ISSN
0003-6951
DOI
10.1063/1.1381414
URI
http://hdl.handle.net/10203/79602
Appears in Collection
PH-Journal Papers(저널논문)
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