Double Fano resonance in a plasmonic double grating structure
It is shown theoretically and numerically that a simple gratings based plasmonic structure can support a nearly degenerate double Fano resonance which can lead to a relatively narrow spectral line shape. The double resonance spectral location and line shape are controllable by either adjusting the periodicity and unit cell of the gratings or by adjusting the angle of incidence of the incoming radiation. c (c) 2016 Optical Society of America OCIS codes: (050.0050) Diffraction and gratings; (260.0260) Physical optics; (130.0130) Integrated optics. References and links 1. A. E. Miroshnichenko, S. Flach, and Y. S. Kivshar, "Fano resonances in nanoscale structures," Rev. Mod. Phys. 82, 2257 2298 (2010) 2. B. Luk'yanchuk, N. I. Zheludev, S. A. Maier, N. J. Halas, P. Nordlander, H. Giessen, and C. T. Chong, "The Fano resonance in plasmonic nanostructures and metamaterials," Nat. Mater. 9, 707 715 (2010) 3. B. Gallinet, A. Lovera, T. Siegfried, H. Sigg, and O. J. F. 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