WANG Xue-yuan, ZHU Zheng-wei. A Novel Tunable Filter Using Magnetized Plasma Defect in One-demension Photonic Crystal[J]. Chinese Journal of Luminescence, 2012,33(7): 747-753
WANG Xue-yuan, ZHU Zheng-wei. A Novel Tunable Filter Using Magnetized Plasma Defect in One-demension Photonic Crystal[J]. Chinese Journal of Luminescence, 2012,33(7): 747-753 DOI: 10.3788/fgxb20123307.0747.
A Novel Tunable Filter Using Magnetized Plasma Defect in One-demension Photonic Crystal
A novel tunable filter featuring the defect mode of the TM wave from one-dimensional photonic crystals doped by magnetized plasma is investigated. Firstly
based on the continuous condition of boundary
the transfer matrix is deduced for magnetized plasma where external magnetic field is perpendicular to wave vector. Then by the transfer matrix method (TMM)
we find out that the frequency of the defect mode can be modulated by plasma frequency or external magnetic field. Without changing the structure of the photonic crystal
the location of the defect mode can be modulated in a larger frequency range
and the number of the defect modes can also be controlled.
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references
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