Journal
OPTICS COMMUNICATIONS
Volume 283, Issue 8, Pages 1640-1646Publisher
ELSEVIER
DOI: 10.1016/j.optcom.2009.11.037
Keywords
Nonlinear metamaterial; Parametric generation; Loss compensation; RLC-circuit model; Electro-optic effect; Frequency converter
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Funding
- Air Force Office of Scientific Research [FA9550-09-1-0562, FA9550-06-1-0279]
- Natural Sciences and Engineering Research Council of Canada (NSERC)
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We perform numerical simulations demonstrating parametric generation and oscillation processes in a single-layer of metamaterial composed of split ring resonators (SRRs). In general, a parametric resonance is achieved by introducing a time-modulation of one of the energy-storing parameters of a resonant system An individual SRR is a resonant system that can be modeled as an RLC-circuit inductively coupled to an applied time-varying magnetic field. The relatively simple circuit model can be employed to establish the range of parameters providing the growth of parametric oscillations within the SRR medium. We relate the numerically predicted circuit parameters that ensure the buildup of parametric oscillations to those parameters expected to be available in a modified SRR medium, in which lumped element varactors integrated into the SRRs are used as modulable capacitance elements. (C) 2009 Elsevier B.V. All rights reserved.
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