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(Color online) (a) Schematic of the lateral shifting of SRRs with inserted diodes; is a shift between two rings. (b) The measured absorption curves for mm (blue solid) and 7.5 mm (green dashed) at −20 dBm input power. Symmetric () and antisymmetric () modes are highlighted. (c) (black circle/solid) and (red cross/dashed) as determined both experimentally (markers) and numerically (lines) for the linear case.
(Color online) Relative nonlinear shift in (black circles) and (red crosses) for shifts (). The dashed lines are second order polynomial fits to the data. The inset shows the nonlinear shift of the absorption at the symmetric mode when mm. The solid blue line is at −20 dBm and the green dashed line at 15 dBm.
(Color online) (a) Experimental (markers) and numerical (lines) maximum absorptions for both symmetric (black circle/solid) and antisymmetric (red cross/dashed) modes. (b) Numerically calculated absorption coefficients at the resonant frequencies for the case of a lossless substrate.
(Color online) Experimental (markers) and numerical (lines) Q factors for the (a) symmetric mode and (b) antisymmetric mode. The red (solid) lines correspond to the lossy case, while the blue (broken) lines correspond to the lossless case. The arrows indicate the relevant axis.
(Color online) (a) Calculated voltage over the capacitive component of the diode. (b) Resulting capacitance (presented as ).
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