Subwavelength electromagnetic diode: one-way response of cascading nonlinear meta-atoms

Details Subwavelength electromagnetic diode: one-way response of cascading nonlinear meta-atoms Subwavelength electromagnetic diode: one-way response of cascading nonlinear meta-atoms

2010-12-10

arxiv.org/abs/1012.2252v2

Appl. Phys. Lett. 98, 151903 (2011)

Physics

Optics

Scientific paper

10.1063/1.3579241

We propose a scheme for realizing subwavelength electromagnetic diode by employing cascading nonlinear meta-atoms. One-way response is demonstrated on a microwave transmission line comprising of three metallic ring resonators acting as meta-atoms and a varactor as the nonlinear medium inclusion. Experiments show that our implementation can operate simultaneously as forward diode and backward diode at different frequencies. A transmission contrast of up to 14.7dB was achieved between forward and backward transmission. Subwavelength size of our diode should be useful for miniaturization of integrated optical nanocircuits.

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