Tunable multiple-channel filters based on photonic heterostructures using single-negative materials

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DENG XinHua LIU NianHua AN LiPing College of Science Nanchang University Nanchang China Institute for Advanced Study Nanchang University Nanchang China College of Science Yanshan University Qinhuangdao China [1 ,2 ,2 ,3 ,1 ,330031 ,2 ,330031 ,3 ,66004 ]
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TB303 [材料结构及物理性质];
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We studied the multiple-channel filters based on photonic heterostructures consisting of single-negative permittivity and single-negative permeability media. The results showed that the number of resonance modes inside the zero-φeff gap increases as the number of heterogenous interface M increases. The number of resonance modes inside the zero-φeff gap is equal to that of heterogenous interface M, and it can be used as M channels filter. This result provides a feasible method to adjust the channel number of multiple-channel filters. When losses are involved, the results showed that the electric fields of the resonance modes decay largely with the increase of the number of heterogenous interface and damping factors. Besides, the relationship between the quality factor of multiple-channel filters and the number of heterogenous interface M is linear, and the quality factor of multiple-channel filters decreases with the increase of the damping factor. These results provide feasible methods to adjust the quality factor of multiple-channel filters.
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页码:2002 / 2007
页数:6
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