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Tunable Fano resonance in one-dimensional magnetized plasmon photonic crystals

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Abstract

In this paper, the reflection characteristics of one-dimensional (1D) magnetized plasma photonic crystals (MPPCs) are studied by using the transfer matrix method. The given structure is made up of binary photonic crystals whose unit only contains two plasma layers with different plasma frequencies and a dielectric material layer at the end. The phenomenon of Fano resonance can be realized by such a simple periodic asymmetric structure. By applying the external applied magnetic field, the properties and transmission metrics of the presented MPPCs can be achieved. The numerical results reveal that two narrow and asymmetric linear reflection peaks will appear, and a phenomenon of Fano resonance can be observed. The influences of refractive index, period constant, incident angle, and magnetized plasma parameters on the obtained Fano resonance also are investigated. The analyzed results demonstrate that the tailored Fano resonance can appear in the proposed 1D MPPCs, and the above parameters can affect its features. The stated 1D MPPCs can be used in the sensors, slow light optical devices, and so on.

© 2021 Optical Society of America

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