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Published on: July 26, 2016
Integrated high-power germanium photodetectors assisted by light field manipulation
Abstract:
We experimentally demonstrate integrated high-power germanium photodetectors (Ge PDs) by means of light field manipulation. Compared to the conventional Ge PD, the proposed structures have more uniform light distributions in the absorption region. A maximum photocurrent of 27.1 mA at -3 V bias voltage is experimentally obtained, demonstrating 50% more photocurrent generation under high-power illumination. Bandwidth and modulated signal measurements also verify the improved power handling capability. The proposed high-power Ge PD with compact size and large fabrication tolerance will bring new applications for silicon photonics.
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