Abstract: The invention relates to a waveguide arrangement (10) comprising a substrate (20) and at least one strip-shaped waveguide made of a wave-guiding layer material (30). The strip waveguide extends strip-like in a longitudinal direction and can guide waves in its longitudinal direction so that the wave propagation direction corresponds to the longitudinal direction of the strip waveguide. The refractive index of the substrate (20) is greater than the refractive index of the layer material (30). In order to guide waves vertically, the strip waveguide forms a waveguide bridge (60) which is located above a recess (100) in the substrate (20) and which is at least partially spatially separated from the substrate (20) there.

Abstract: An embodiment of the present invention relates to a photon-to-plasmon coupler for converting photons to plasmons or vice versa, said photon-to-plasmon coupler comprising a photonic waveguide for guiding photons, a plasmonic waveguide for guiding plasmons, and two plasmonic strip waveguides, each of said two plasmonic strip waveguides being connected to said plasmonic waveguide and embracing an end section of the photonic waveguide such that each of said plasmonic strip waveguides is optically coupled to the end section of the photonic waveguide.