Abstract
Digital signal processing (DSP) with both linear equalization and nonlinear compensation for the single-carrier 400G system based on 84-GBaud polarization-division multiplexing 8QAM signals is studied in this paper. The 8QAM signals are generated and preprocessed with pre-equalization and lookup table predistortion at the transmitter (Tx)-side. The implementation principles of training-based adaptive equalization and predistortion are presented in this paper with experimental studies on the tap and memory length. At the receiver (Rx)-side, fiber-nonlinearity compensation based on digital backward propagation is also utilized to further improve the transmission performance. Thanks to the Tx-side and Rx-side DSPs, eight channels of 400G are successfully transmitted over 2125 km SSMF with EDFA-only amplification.
© 2017 IEEE
PDF Article
More Like This
Transmission of single-carrier 400G signals (515.2-Gb/s) based on 128.8-GBaud PDM QPSK over 10,130- and 6,078 km terrestrial fiber links
Junwen Zhang, Jianjun Yu, Benyuan Zhu, Fan Li, Hung-Chang Chien, Zhensheng Jia, Yi Cai, Xinying Li, Xin Xiao, Yuan Fang, and Yuanquan Wang
Opt. Express 23(13) 16540-16545 (2015)
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription