期刊
OPTICS LETTERS
卷 46, 期 16, 页码 3821-3824出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.433654
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资金
- Advanced Research Projects Agency-Energy [DE-AR0001039]
A GaAs-based quantum dot avalanche photodiode (APD) on silicon with low dark current, high bandwidth, and record gain-bandwidth product was reported. The device also showed potential for integration into a wavelength division multiplexing system for high-speed reception.
We report a heterogeneous GaAs-based quantum dot (QD) avalanche photodiode (APD) on silicon with an ultralow dark current of 10 pA at -1 V, 3 dB bandwidth of 20 GHz and record gain-bandwidth product (GBP) of 585 GHz. Furthermore, open eye diagrams up to 32 Gb/s are demonstrated at 1310 nm. The k-factor has been measured for these devices to be as low as 0.14. A polarization dependence on gain and bandwidth has been observed and investigated. This shows the potential to integrate a high-speed receiver in a wavelength division multiplexing (WDM) system on a QD-based silicon photonics platform. (C) 2021 Optical Society of America
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