Higher Order Fano Resonances and Electric Field Enhancements in Disk-Ring Plasmonic Nanostructures with Double Symmetry Breaking

Tunable Fano Resonances and Electromagnetically Induced Transparency in All-Dielectric Holey Block

“…However, the first Fano resonance F 1 is highly red-shifted as we increase Δx. The similar higher order modes are reported in metal nanostructures, which suffers from large ohmic losses [27,29,36]. Thus, dual Fano resonances with sharp asymmetric line shapes are achieved in SHB nanostructure, which in our knowledge has never been seen in any dielectric nanostructure reported before [31,[33][34][35].…”

Observation of Fano line shapes arising from coupling between surface plasmon polariton and waveguide modes

“…6,7 In recent years, great efforts have been made to generate Fano line shapes in plasmonic nanostructures and apply them to develop novel optical devices such as optical sensors and switches. 2 To date, a variety of plasmonic nanostructures, including metallic nanowire arrays, 8 clusters of nanoparticles, [9][10][11][12][13] disk/ring nanocavities, [14][15][16] and metal-insulator-metal waveguides coupled to resonators, 17 are known to exhibit Fano line shapes. In spite of the intensive work done, the fabrication of the nanostructures is not always easy and is time consuming, preventing their real applications.…”

Twin Dipole Fano Resonances in Symmetric Three-Layered Plasmonic Nanocylinder

“…Other plasmonic bimetallic layered nanostructures like ring/disk nanocavities (RDNC) [14,31,36] and double nanoshell structure (DNS) [9] exhibit the similar superradiant mode, subradiant mode, and single dipole Fano resonance in the concentric case. For the achievement of multiple Fano resonances in RDNC and DNS nanostructures, the same symmetry breaking conception is used [10,14,37]. The symmetry reduced metal nanostructures are usually fabricated using complex and expensive techniques, which severely reduces their application potentials.…”