期刊
OPTICS EXPRESS
卷 27, 期 4, 页码 5798-5813出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.27.005798
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- Ministry of Education, Singapore [MOE2018-T2-1-137]
- National University of Singapore Trailblazer [R-263-000-B43-733]
We report high-speed photo detection at two-micron-wavelength achieved by a GeSn/Ge multiple-quantum-well (MQW) p-i-n photodiode, exhibiting a 3-dB bandwidth (f(3-dB)) above 10 GHz for the first time. The epitaxy of device layer stacks was performed on a standard (001)-oriented 300 mm Si substrate by using reduced pressure chemical vapor deposition (RPCVD). The results showed promise for large-scale manufacturing. To our knowledge, this is also the first photodiodes-on-Si with direct radio-frequency (RF) measurement to quantitatively confirm high-speed functionality with tens of GHz f(3-dB) at 2 pm, which is considered as a promising candidate for the next data communication window. This work illustrates the potential for using GeSn to extend the utility of Si photonics in 2 gm band integrated optical transceivers for communication applications. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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