Low-loss plasmonic device and method for manufacturing the same

Abstract

The plasmonic device comprises a substrate (2), at least two electrically conductive electrodes (4a, 4b) forming a gap (6) between them, and at least one 5 electro-optic dielectric body (8) arranged in the gap (6). The electrodes (4a, 4b) and the dielectric body (8) form a plasmonic waveguide. Further, the device comprises a barrier (10) fully separating the electrodes (4a, 4b) and the dielectric body (8), with the barrier (10) being of a material different from the electrodes (4a, 4b) and the dielectric body (8). The barrier (10) may be formed of one or more cover layer (10a, 10 10b). In particular, one of the cover layers may be a metal, e.g. gold, while the other is a dielectric.

Dependencies are inferred from the claim text.