Ultra-deep stopband induced by spontaneous-emission-cancellation–like interference between two side-coupled zero-index-metamaterial–based resonators
Ultra-deep stopband induced by spontaneous-emission-cancellation–like interference between two side-coupled zero-index-metamaterial–based resonators
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DOI：
10.1209/0295-5075/100/34003
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发表时间：
2012-11
期刊：
影响因子：
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通讯作者：
Y. H. Li;Z. Dong;Y. Sun;W. Tan;H. T. Jiang;Z. Wang;H. Chen
中科院分区：
文献类型：
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作者：
Y. H. Li;Z. Dong;Y. Sun;W. Tan;H. T. Jiang;Z. Wang;H. Chen
In this paper, two side-coupled zero-index-metamaterial–based resonators that mimic the spontaneous-emission cancellation (SEC) effect are investigated numerically and experimentally. It is found that an interference-induced stopband as deep as −70 dB can be observed in a microstrip SEC structure whose size is even less than 0.5 cm2. More simulations about the electrical-field distributions demonstrate intuitively the underlying physics, i.e., the destructive interference between two side-coupled zero-index-metamaterial–based resonators. Our method of realizing ultra-deep stopband properties in a miniaturized filter may find potential applications in both microwave and optical-communication systems.
