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首页> 外文期刊>Optical and quantum electronics >The properties of a tunable terahertz multichannel filter from one-dimensional photonic crystal dope by magnetized plasma defect
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The properties of a tunable terahertz multichannel filter from one-dimensional photonic crystal dope by magnetized plasma defect

机译：一维光子晶体掺杂磁化等离子体缺陷的可调谐太赫兹多通道滤波器的特性

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摘要

The terahertz magnetize-field tunable filtering properties in a multichannel filter based on a one-dimensional photonic crystal doped by magnetized plasma are theoretically investigated. The considered structure of (AB)(4)(ACB)(N)(AB)(4) is designed, where A and B are two dielectric layers, C is the plasma layer, and N is the defect number. First, the structure can be worked as a multichannel filter whose channel number equals N. Second, the defect mode frequencies are all red-shifted as the ratio of dielectric refractive index or the sum of the A and B layer length increases. Third, we find that the channel frequencies can be shifted as a function of the applied magnetic field and the defect mode frequencies are all red-shifted as the plasma density increases. And the thickness of a plasma layer also affects the intensity, position and number of the defect modes. Therefore, these unusual properties may provide a novel design idea of a tunable terahertz multichannel transmission filter in future.
机译：从理论上研究了基于一维光子晶体的多通道滤波器中太赫兹磁化场可调滤波特性。设计了考虑的结构（AB）（4）（ACB）（N）（AB）（4），其中A和B是两个介电层，C是等离子体层，N是缺陷数。首先，该结构可以用作通道数等于N的多通道滤波器。其次，随着介电折射率之比或A和B层长度之和的增加，缺陷模式频率全部红移。第三，我们发现通道频率可以随所施加的磁场而变化，并且随着等离子体密度的增加，缺陷模式的频率都会发生红移。等离子体层的厚度也影响缺陷模式的强度，位置和数量。因此，这些不寻常的特性可能会在将来提供可调谐太赫兹多通道传输滤波器的新颖设计思想。

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