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We present an experimental realization of an integrated biosensor consisting of a Ge PIN photodetector with an Al nanohole array in its contact metal layer. The device responsivity strongly depends on the surrounding refractive index, making the device suitable for integrated sensing at reduced size.
Metallic interconnects have been predicted to be the limiting factor in increasing overall device performance in the near future. Photonic interconnects as a potential alternative are subject to the diffraction limit which limits their use to interconnects with dimensions larger than λ/2, with λ being the wavelength of light. Optical interconnects that are based on plasmonic transmission lines could...
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