title: Tunable split-ring resonators for nonlinear negative-index metamaterials.
abstract: We study experimentally the dynamic tunability and self-induced nonlinearity of split-ring resonators incorporating variable capacitance diodes. We demonstrate that the eigenfrequencies of the resonators can be tuned over a wide frequency range, and significantly, we show that the self-induced nonlinear effects observed in the varactor-loaded split-ring resonator structures can appear at relatively low power levels.
authors.forename: Ilya V
authors.initials: IV
authors.lastname: Shadrivov
authors.forename: Steven K
authors.initials: SK
authors.lastname: Morrison
authors.forename: Yuri S
authors.initials: YS
authors.lastname: Kivshar