Open Access64Gb/s PAM4 and 160Gb/s 16QAM modulation reception using a low-voltage Si-Ge waveguide-integrated APD
Author(s) -
Jin Zhang,
Bill P.-P. Kuo,
S. Radic
Publication year - 2020
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.396979
Subject(s) - avalanche photodiode , responsivity , quadrature amplitude modulation , optics , modulation (music) , waveguide , bandwidth (computing) , optoelectronics , materials science , physics , bit error rate , channel (broadcasting) , detector , telecommunications , computer science , acoustics
We demonstrate waveguide-integrated silicon-germanium avalanche photodiodes with a maximum responsivity of 15.2 A/W at 16x avalanche gain, and 33 GHz bandwidth. Intensity-modulation-direct-detection (IMDD) and coherent channel reception test demonstrated the APD's performance with higher-order formats, allowing 32 Gbaud PAM-4 and 40 Gbaud 16QAM channel reception without any digital signal processing conventionally used for receiver impairments mitigation.