Abstract

We demonstrated a support vector machine (SVM) based machine learning method to mitigate modulation nonlinearity distortion for PAM-4 and PAM-8 vertical cavity surface emitter laser multi-mode fiber (VCSEL-MMF) optical link. Simulations at 100 Gb/s data rate and experimental work at 60 Gb/s data rate were carried out. We achieved a significant improvement in bit error rate (BER) when complete binary tree SVMs (CBT-SVMs) are applied for both PAM-4 and PAM-8 signals. Quantitative analysis of the sensitivity gain versus modulation nonlinearity distortion is presented with experimentally verification. The results indicate that CBT-SVMs have better performance for PAM-8 compared to PAM-4. The sensitivity gain increases almost linearly with the increase of eye-linearity (increase of modulation nonlinearity distortion). Up to 2.5-dB sensitivity improvement is achieved by the proposed CBT-SVMs at eye-linearity of 1.72 for PAM-4.

© 2017 IEEE

Amplifierless PAM-4/PAM-8 transmissions in O-band using a directly modulated laser for optical data-center interconnects

Nikolaos-Panteleimon Diamantopoulos, Wataru Kobayashi, Hidetaka Nishi, Koji Takeda, Takaaki Kakitsuka, and Shinji Matsuo
Opt. Lett. 44(1) 9-12 (2019)

Bit-based support vector machine nonlinear detector for millimeter-wave radio-over-fiber mobile fronthaul systems

Yue Cui, Min Zhang, Danshi Wang, Siming Liu, Ze Li, and Gee-Kung Chang
Opt. Express 25(21) 26186-26197 (2017)

Machine learning classifier based on FE-KNN enabled high-capacity PAM-4 and NRZ transmission with 10-G class optics

Meihua Bi, Jiasheng Yu, Xin Miao, Longsheng Li, and Weisheng Hu
Opt. Express 27(18) 25802-25813 (2019)

Single-mode VCSEL for pre-emphasis PAM-4 transmission up to 64  Gbit/s over 100–300  m in OM4 MMF

Hsuan-Yun Kao, Cheng-Ting Tsai, Shan-Fong Leong, Chun-Yen Peng, Yu-Chieh Chi, Huai-Yung Wang, Hao-Chung Kuo, Chao-Hsin Wu, Wood-Hi Cheng, and Gong-Ru Lin
Photon. Res. 6(7) 666-673 (2018)

52 Gbps PAM4 receiver sensitivity study for 400GBase-LR8 system using directly modulated laser

Reza Motaghiannezam, Thang Pham, Alan Chen, Tengda Du, Chris Kocot, Jack Xu, and Bernd Huebner
Opt. Express 24(7) 7374-7380 (2016)