Fig. 3
From: Mie-coupled bound guided states in nanowire geometric superlattices
Selective excitation of guided modes through a NW GSL. a Dispersion curves (solid lines) of fundamental HE11 guided modes in infinitely long NWs with d = 140 nm (green), d = 250 nm (purple), and d = 340 nm (brown). Marker symbols denote the positions of scattering dark states that are centered on a Mie resonance (magenta diamonds) or off-center from a Mie resonance (black circles). Magenta dashed line represents the frequency of a BGS that is centered on a Mie resonance for each value of d, so the intersection of solid and dashed lines represents the condition ωm = ωg. b Structure and excitation geometry of a NW GSL connected to a NW WG. c Calculated magnetic field profiles of an incoming Gaussian beam background field, Hbx, (top) and an excited mode scattered field, Hx, (bottom) of a NW GSL with d = 330 nm, e = 310 nm and p = 900 nm, and 10 periods, showing propagation from the GSL into the WG. d, e Simulated Qext (d) and Qguided (e) spectra corresponding to the structure in b and c
