Silicon-Graphene Heterojunction Waveguide Photodetector with a 3dB-bandwidth of >14 GHz

We propose and demonstrate a silicon-graphene heterojunction photodetector with a 100-nm-thick silicon core. The measured 3-dB bandwidth of > 14 GHz at 1570 nm and the normalized photocurrent-to-dark-current ratio (NPDR) of 340 mW −1 are obtained.

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Bibliographic Details
Published in2021 Asia Communications and Photonics Conference (ACP) pp. 1 - 3
Main Authors Liu, Chaoyue, Guo, Jingshu, Yu, Laiwen, Xiang, Yuluan, Dai, Daoxin
Format Conference Proceeding
LanguageEnglish
Published OSA 01.10.2021
Subjects
Bandwidth
Heterojunctions
Linearity
Optical device fabrication
Optical variables measurement
Power measurement
Silicon
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Summary:We propose and demonstrate a silicon-graphene heterojunction photodetector with a 100-nm-thick silicon core. The measured 3-dB bandwidth of > 14 GHz at 1570 nm and the normalized photocurrent-to-dark-current ratio (NPDR) of 340 mW −1 are obtained.