ALL-ELECTRICAL PLASMON DETECTOR

摘要

A plasmon detector comprising a strip-shaped waveguide (10) of material adapted to generate a plasmon when excited by an incident beam of light, the waveguide being adapted to guide the plasmon along its length direction (x). The detector comprises at least one probe electrode (21, 22, 23; 31, 32, 33) arranged in ohmic contact with a minimal area overlap (10a) of the waveguide (10) at one of opposite side edges (11, 12) thereof, and a reference electrode (40) arranged in ohmic contact with one of opposite ends of the waveguide. A DC electric potential difference (δV) is measurable between probe electrode (21, 22, 23; 31, 32, 33) and reference electrode (40), the potential difference being related to an AC electric field of plasmon propagating in the waveguide (10).