MA Peng-cheng, SUN Si-wei, LIU Feng-man, et al. High-Performance Si-based Ge Uni-Traveling-Carrier Photodetector[J]. 2019,(3):26-30. DOI: 10.13756/j.gtxyj.2019.03.006.
As one of the core devices of optical communication system
the performance of photodetectors plays a decisive role in evaluating the system performance. With the rapid increase of optical communication data
the traditional photodetectors can not meet the demand. This paper presents a high performance silicon based germanium uni-traveling-carrier photodetector integrated with Si
3
N
4
waveguide. With the help of the software of Lumerical FDTD and DEVICE for modeling and simulation
the waveguide structure and the size of photodetector are designed. Finally
the optimized structure could achieve optical responsivity of 0.97 A/W at 1 550 nm wavelength and-1 V bias
with linear output photocurrent greater than 30 mA and electrical 3 dB bandwidth up to 28 GHz.
关键词
光通信氮化硅波导硅基锗单行载流子光电探测器
Keywords
optical communicationSi3N4 waveguidesilicon based germaniumUni-Traveling-Carrier PhotoDetector(UTC-PD)