Abstract
We experimentally demonstrate high-speed metro-scale optical transmission of a single sideband (SSB) 4-ary pulse amplitude modulation (PAM-4) signal based on a silicon photonic dual-drive Mach–Zehnder modulator (MZM). We propose a novel, to the best of our knowledge, artificial neural network (ANN) structure of soft combined ANN (SC-ANN) to compensate for both linear and nonlinear impairments of the signal. SC-ANN obtains the enhanced performance by averaging the outputs of conventional ANN with different sizes. With the help of the SC-ANN, we achieve a 320 km standard single-mode fiber (SSMF) transmission of 184 Gb/s (92Gbaud) PAM-4 with a bit-error rate (BER) below the 20% soft-decision forward error-correction (SD-FEC) threshold of ${2.4} \times {{10}^{ - 2}}$, and the optical signal-to-noise ratio (OSNR) penalty is only 0.3 dB compared to the back-to-back (BTB) results.
© 2020 Optical Society of America
Full Article | PDF ArticleMore Like This
Xiaoke Ruan, Fan Yang, Lei Zhang, Hao Ming, Yanping Li, and Fan Zhang
Opt. Lett. 45(19) 5344-5347 (2020)
Zhiquan Wan, Jianqiang Li, Liang Shu, Ming Luo, Xiang Li, Songnian Fu, and Kun Xu
Opt. Express 26(8) 10631-10642 (2018)
Jingchi Li, Shaohua An, and Yikai Su
Opt. Lett. 45(22) 6178-6181 (2020)