TY - GEN
T1 - Analog signal processing circuits for a 400Gb/s 16QAM optical coherent receiver
AU - Zhang, Boyang
AU - Gai, Weixin
AU - Niu, Haowei
AU - Ye, Bingyi
AU - Sheng, Kai
AU - Zuo, Tianjian
AU - Liu, Lei
N1 - Publisher Copyright:
© 2021 IEEE
PY - 2021
Y1 - 2021
N2 - A novel structure of analog signal processing circuits for coherent receivers is proposed and implemented in 28-nm CMOS technology with 1V supply voltage in this work. To avoid excessive taps in equalizer or prolix circuit modules, the system combines the crosstalk equalizer and carrier phase recovery circuits with the application of 2 kinds of multipliers to compensate linearity for higher accuracy. In order to achieve stronger converging ability, simplify the system realization and further reduce power dissipation, the chromatic dispersion equalizer uses DFE instead of FFE to eliminate post cursor. Simulation results show circuits are capable of equalizing signals of 40-ps/nm chromatic dispersion effect, 300-kHz dynamic polarization crosstalk and 100MHz frequency offset with power of 1.2 Watt.
AB - A novel structure of analog signal processing circuits for coherent receivers is proposed and implemented in 28-nm CMOS technology with 1V supply voltage in this work. To avoid excessive taps in equalizer or prolix circuit modules, the system combines the crosstalk equalizer and carrier phase recovery circuits with the application of 2 kinds of multipliers to compensate linearity for higher accuracy. In order to achieve stronger converging ability, simplify the system realization and further reduce power dissipation, the chromatic dispersion equalizer uses DFE instead of FFE to eliminate post cursor. Simulation results show circuits are capable of equalizing signals of 40-ps/nm chromatic dispersion effect, 300-kHz dynamic polarization crosstalk and 100MHz frequency offset with power of 1.2 Watt.
KW - Analog signal processing
KW - Direct decision feedback equalization
KW - Four-quadrant multipliers
KW - Multi-taps equalizers
KW - Optical coherent receiver
UR - https://www.scopus.com/pages/publications/85109001616
U2 - 10.1109/ISCAS51556.2021.9401734
DO - 10.1109/ISCAS51556.2021.9401734
M3 - 会议稿件
AN - SCOPUS:85109001616
T3 - Proceedings - IEEE International Symposium on Circuits and Systems
BT - 2021 IEEE International Symposium on Circuits and Systems, ISCAS 2021 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 53rd IEEE International Symposium on Circuits and Systems, ISCAS 2021
Y2 - 22 May 2021 through 28 May 2021
ER -