Waveguide photodetectors for the near-infrared in polycrystalline Germanium on silicon
L. Colace; G.M.A. Altieri; G. Assanto
Photonics Technology Letters, IEEE
Volume 18, Issue 9, May 1, 2006 Page(s):1094 - 1096
Digital Object Identifier   10.1109/LPT.2006.873964
Summary:We demonstrate novel near-infrared waveguide photodetectors in polycrystalline germanium deposited on silicon-on-insulator at low temperatures. We present the design, fabrication, and characterization of two photodiodes and their comparison. Without optimization, at 1.55 μm, we measured wall-plug and effective responsivities as high as 30 mA/W and in excess of 150 mA/W, respectively.

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