Multi-modal transmission of microwaves through hole arrays.
Multi-modal transmission of microwaves through hole arrays.
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DOI：
10.1364/oe.19.013793
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发表时间：
2011-07
期刊：
影响因子：
3.8
通讯作者：
J. Edmunds;E. Hendry;A. Hibbins;J. Sambles;I. Youngs
中科院分区：
文献类型：
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作者：
J. Edmunds;E. Hendry;A. Hibbins;J. Sambles;I. Youngs
通过实验和模型比较了大孔（衍射起始点以下截止）和小孔（衍射起始点以上截止）在厚金属板上的微波通过孔阵列的透射特性。增强传输部分是由衍射耦合表面波的激发介导的。在衍射起始点以下具有截止点的大孔（由于孔的周期性），当孔的深度足以支持传播方向上的量子化时，能够支持多种模式的传输。在衍射起始点以上具有截止点的小孔，在衍射起始点以下只支持两种耦合的表面模式（对称和反对称）。
The microwave transmission through hole arrays in thick metal plates for both large holes (cut-off below onset of diffraction) and small holes (cut-off above onset of diffraction) have been compared through both experiment and modelling. Enhanced transmission is in part mediated by the excitation of diffractively coupled surface waves. Large holes, with cut-off below the onset of diffraction (due to the hole periodicity), are able to support multiple modes in transmission when the depth of the holes is sufficient to support quantisation in the propagation direction. Small holes, with cut-off above the onset of diffraction however only support two coupled surface modes (symmetric and anti-symmetric) below diffraction.