Characteristic-mode analysis of coupled split-ring resonators

Tuning the nonlinear response of coupled split-ring resonators

We introduce the concept of controlling the nonlinear response of the metamaterial by altering its internal structure. We experimentally demonstrate tuning of the nonlinear response of two coupled split-ring resonators by changing their mutual position. This effect is achieved through modification of the structure of the coupled resonant modes and their interaction with the incident field. By o...

Multistability and localization in coupled nonlinear split–ring resonators

a Department of Physics, University of Crete and Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, P.O. Box 2208, 71003 Heraklion, Greece b Departamento de Física, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, Chile c Nonlinear Physics Center, Research School of Physics and Engineering, Australian National University, Canberra ACT 0...

Electromagnetic resonances in individual and coupled split-ring resonators

We study experimentally and numerically the electromagnetic resonances in split ring resonators ~SRRs!, around 1 GHz. For an individual SRR, we show that both electric and magnetic fields can induce resonances, the magnetic one being the strongest. The utilization of such resonant structures as efficient microwave filter is also demonstrated. The coupling between two or more SRRs can be quite c...

Tunable Superconducting Split Ring Resonators

Spectral imaging of individual split-ring resonators.

We report on spectral imaging within individual silver split-ring resonators (SRRs) operating in the near infrared-visible range. We classified the optical eigenmodes from the measurement of their energies and nanometer scale spatial distributions. They are plasmonic standing waves that show great similarities with that of nanoantennas. We, however, evidenced marked differences in the near-fiel...