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  • Title: Symmetry breaking and strong coupling in planar optical metamaterials.
    Author: Aydin K, Pryce IM, Atwater HA.
    Journal: Opt Express; 2010 Jun 21; 18(13):13407-17. PubMed ID: 20588471.
    Abstract:
    We demonstrate narrow transmission resonances at near-infrared wavelengths utilizing coupled asymmetric split-ring resonators (SRRs). By breaking the symmetry of the coupled SRR system, one can excite dark (subradiant) resonant modes that are not readily accessible to symmetric SRR structures. We also show that the quality factor of metamaterial resonant elements can be controlled by tailoring the degree of asymmetry. Changing the distance between asymmetric resonators changes the coupling strength and results in resonant frequency tuning due to resonance hybridization.
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