ИСТИНА

All-dielectric nanophotonics offers favourable opportunities for engineering of devices for various practical tasks. In this regard, a very promising field is integrated photonic circuitry, where the implementation of all-dielectric components can significantly increase the performance of nanodevices. In this paper, we numerically investigate a system formed by an ultrafast all-optical switch – a GaAs dimer nanoantenna – and a GaAs strip waveguide. The simulation of the light scattering in that system shows the relative change of the waveguide transmission coefficient ΔT/T up to 12.3 % for the fluence of the pumping pulse 0.19 mJ·cm-2. This proof-of-principle result paves the way for potential applications of the system as a logic element for nanophotonic chips.