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
PDF Article
More Like This
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)
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