Patent ID: 8809834

Claim:
A photodetector capable of detecting long wavelength radiation, comprising: a source disposed on a proximal end of an insulation layer; a drain disposed on a distal end of the insulation layer; at least one nano-assembly coupling the source and the drain between the proximal and distal ends; and at least two surface plasmon waveguides positioned between the source and the drain and juxtaposed to the at least one nano-assembly in a longitudinal direction of the at least one nano-assembly to receive photons from incident light and to confine at least a portion of the photons around at least a portion of the nano-assembly, wherein one of the at least two surface plasmon waveguides is positioned along a first side of the at least one nano-assembly, and another of the at least two surface plasmon waveguides is positioned along a second side of the at least one nano-assembly that is opposite the first side.