Tuning the Nonlinear Response of Coupled Split-Ring Resonators

TL;DR

This paper demonstrates how adjusting the internal structure of coupled split-ring resonators can effectively control their nonlinear electromagnetic response, enabling tunable metamaterial properties.

Contribution

It introduces a method to tune nonlinear responses in metamaterials by modifying the mutual positioning of coupled resonators, supported by experimental validation.

Findings

Nonlinear response can be tuned by changing resonator positions.

Structural modifications alter coupled resonant modes.

Experimental results confirm controllability of nonlinear effects.

Abstract

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 offsetting the resonators we control the maximum currents through the nonlinear driving elements, which affects the nonlinear response of the system.