Plasmonic internal photoemission detectors with responsivities above 0.12 A/W

We demonstrate first plasmonic photodetectors based on internal photoemission featuring responsivities exceeding 0.12 A/W at 1550 nm. The devices consist of ultra-compact plasmonic waveguides with electrode spacing below 100 nm receiving on-off-keying signals at 40 Gbit s
^-1
.