Gain Incorporated Split-Ring Resonator Structures for Active Metamaterials

We present a systematic study of split-ring resonator (SRR) structures that are used as the basic building blocks of active metamaterials with incorporated gain. The active split-ring resonator (aSRR) structures with gain elements can in theory have similar unusual electromagnetic responses such as...

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Published in:Advances in OptoElectronics (Hindawi) 2015-01, Vol.2015, p.1-9
Main Authors: Chaires, Jordan, Schumerth, David, Drawdy, Cole, Yang, Weiguo
Format: Article
Language:English
Subjects:
Computer simulation
Experimentation
Gain
Magnetic permeability
Mathematical analysis
Metamaterials
Optoelectronics
Permeability
Resonators
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Schumerth, David
Drawdy, Cole
Yang, Weiguo
description We present a systematic study of split-ring resonator (SRR) structures that are used as the basic building blocks of active metamaterials with incorporated gain. The active split-ring resonator (aSRR) structures with gain elements can in theory have similar unusual electromagnetic responses such as negative effective permeability near their resonance of the artificial magnetic response just like their passive counterparts. At the same time aSRRs can have reversed imaginary part of the effective permeability and, therefore, mitigate the loss of passive SRRs. We explored in detail both passive and active SRRs through analytic theory, numerical simulations, and lab experimentation and demonstrated that aSRRs can have the similar negative effective permeability responses while reducing and even reversing the loss.
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subjects Computer simulation
Experimentation
Gain
Magnetic permeability
Mathematical analysis
Metamaterials
Optoelectronics
Permeability
Resonators
title Gain Incorporated Split-Ring Resonator Structures for Active Metamaterials
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