WAVEGUIDE INTEGRATED PHOTODETECTOR

摘要

A waveguide integrated photodetector (100) is described. The waveguide integrated photodetector comprises a first layer (110) of plasmon supporting material whereby the first layer (110) has an input slit (112) extending through the first layer (110) for coupling first radiation to the waveguide. The photodetector (100) also comprises a second layer (120) of plasmon supporting material facing the first layer and separated from the first layer by a first distance in a first direction. The second layer (120) has an output slit (122) extending through the second layer (120) and separated from the input slit (112) by a second distance extending along a second direction differing from first direction. The photodetector system (100) also comprises a dielectric layer (130) interposed between the first layer (110) and the second layer (120), and a detector (140) near the output slit (122) for detecting the radiation coupled out through the output slit (122).