Acta Photonica Sinica, Volume. 35, Issue 2, 286(2006)
Tunable Transmittance of Defect Modes in One-dimensional Photonic Crystal with 3 Defects
By propagation matrix method,the property of one-dimensional photonic crystals with 3 defects was analyzed. On condition that the distance between adjacent defects in the photonic crystals was long enough for a degenerate defect mode to be produced,transmittance of the degenerate defect mode can be tuned to the full extent by a change of the optical path of one of defect layers in the photonic crystal. Nematic liquid crystal was introduced as one of the defect layers. As a result,the transmittance of the degenerate defect mode in the structure can be tuned by a change of the refractive index of the liquid crystal upon the application of an electric field. For the system,the maximum of transmittance was 1 and the minimum approachd 0,which were calculated by 4 × 4 propagation matrix. Possible applications of this system were discussed,especially in the field of communication where a optic switch can be produced.
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Liu Dandong, Chen Guangde, Li Puxuan, Sun Zhongyu. Tunable Transmittance of Defect Modes in One-dimensional Photonic Crystal with 3 Defects[J]. Acta Photonica Sinica, 2006, 35(2): 286
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Received: Jun. 7, 2005
Accepted: --
Published Online: Jun. 3, 2010
The Author Email: Dandong Liu (dandangliu@mail.xjtu.edu.cn)
CSTR:32186.14.