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(Color online) Schematic diagram of the plasmonic MSM-PD structure.
(Color online) Simulated (a) light transmission enhancement factor (Γ) versus wavelength and (b) field distributions (Ex, Hy, and Ez) of the optimized MSM-PD device without (left) and with (right) nano-gratings.
An SEM image of the fabricated plasmonics-based MSM-PD structure. The inset shows a high magnification image of the sub-wavelength slit with linear nano-gratings at both sides.
(Color online) (a) Measured I-V characteristics comparing two GaAs MSM-PDs WGs and WOGs for different illumination power levels. (b) Photocurrent enhancement factor (IWG/IWOG) versus input voltage for an input laser power of 3 mW.
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