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Competing nonlinearities with metamaterials
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View: Figures


Image of FIG. 1.
FIG. 1.

(a) Schematic of the light-tunable SRR and attached electronic components. (b) Photograph of a SRR sample (bottom dielectric board) excited by a loop antenna (top dielectric board) and illuminated by a light source.

Image of FIG. 2.
FIG. 2.

Measured reflection coefficient for two different values of the input microwave signal power and for two different intensities of the external light source.

Image of FIG. 3.
FIG. 3.

(a) Nonlinear equivalent circuit of SRR excited by a loop antenna. (b) Voltage across the varactor vs. frequency simulated numerically for input powers from 5 dBm to 20 dBm with a step of 2.5 dBm and light intensity 0 lx. (c) Simulated shift of the resonant frequency of the nonlinear SRR vs. the input power, with and without external illumination.

Image of FIG. 4.
FIG. 4.

Experimentally measured current vs. voltage (I–U) characteristics of a BPW-34-S photodiode for two values of light intensity.

Image of FIG. 5.
FIG. 5.

Experimentally measured shift of the SRR resonant frequency as a function of input power, for two values of light source intensity. Measured data are shown by markers, whereas the lines are guide for eye.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Competing nonlinearities with metamaterials