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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Bibliographic Details
Published in:Europhysics letters 2012-11, Vol.100 (3), p.1-1
Main Authors: Li, Y H, Dong, Z D, Sun, Y, Tan, W, Jiang, H T, Wang, Z G, Chen, H
Format: Article
Language:English
Subjects:
Cancellation
Computer simulation
Electric power distribution
Interference
Microwaves
Noise levels
Resonators
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 cm super( 2). 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. The authors method of realizing ultra-deep stopband properties in a miniaturized filter may find potential applications in both microwave and optical-communication systems.
ISSN:0295-5075
1286-4854