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Ultra-deep stopband induced by spontaneous-emission-cancellation-like interference between two side-coupled zero-index-metamaterial-based resonators
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 wh...
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Published in: | Europhysics letters 2012-11, Vol.100 (3), p.34003 |
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Main Authors: | , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | 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. |
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ISSN: | 0295-5075 1286-4854 |
DOI: | 10.1209/0295-5075/100/34003 |