Abstract

This work proposes a probabilistic shaping scheme for optical WDM systems, where nonlinear interference noise depends on the input optical signal power distribution. With $16$ -QAM, a white Gaussian channel analysis shows that the shaped constellation is able to achieve a reach improvement of up to $7\%$ , while split-step Fourier method simulations suggest that even higher gains are possible in practice. An example system is developed for a transmission distance around $3280$ km. A constellation mapping and a low-density parity-check code are developed for this regime to show a reach improvement of $7.1\%$ . These shaping schemes can also be extended to $64$ -QAM, where a reach improvement of over $10\%$ is expected.

© 2016 IEEE

Performance investigation of the probability-aided maximum likelihood sequence detector for a probabilistic shaped 16-QAM system

Xiaoshuo Jia, Yan Li, Yuyang Liu, Honghang Zhou, Jiaxin Li, Ming Luo, Zhixue He, Chao Yang, Jifang Qiu, Yong Zuo, Wei Li, Xiaobin Hong, Hongxiang Guo, Jianxin Lv, and Jian Wu
Opt. Express 30(9) 14421-14431 (2022)

LDPC-coded DFT-Spread DMT signal transmission employing probabilistic shaping 16/32QAM for optical interconnection

Xinxing Wu, Dongdong Zou, Ze Dong, Xue Zhao, Yifan Chen, and Fan Li
Opt. Express 27(7) 9821-9828 (2019)

16-QAM probabilistic constellation shaping by adaptively modifying the distribution of transmitted symbols based on errors at the receiver

Ahmad Fallahpour, Fatemeh Alishahi, Amir Minoofar, Kaiheng Zou, Ahmed Almaiman, Peicheng Liao, Hubin Zhou, Moshe Tur, and Alan E. Willner
Opt. Lett. 45(18) 5283-5286 (2020)

Low-complexity probabilistic shaping based on bit-weighted distribution matching in DMT-WDM-PON

Yifan Chen, Hailian He, Xue Zhao, Zhenqi Cao, Lin Zhou, and Ze Dong
Opt. Express 28(15) 21814-21824 (2020)

Real-time measurement of a probabilistic-shaped 200Gb/s DP-16QAM transceiver

Zhuhong Zhang, Jianwu Wang, Si Ouyang, Jianfeng Wang, Jie Chen, Xianhua Liu, Jun Chen, Yongzhong Wang, Wenchang Wang, Tao Ding, Chuandong Li, Hossein Najafi, and Minggang Si
Opt. Express 27(13) 18787-18793 (2019)