High-Speed PAM4-Based Optical SDM Interconnects With Directly Modulated Long-Wavelength VCSEL

@article{VanKerrebrouck2019HighSpeedPO,
  title={High-Speed PAM4-Based Optical SDM Interconnects With Directly Modulated Long-Wavelength VCSEL},
  author={Joris Van Kerrebrouck and Xiaodan Pang and Oskars Ozolins and Rui Lin and Aleksejs Udalcovs and Lu Zhang and Haolin Li and Silvia Spiga and Markus-Christian Amann and Lin Gan and Ming Tang and Songnian Fu and Richard Schatz and Gunnar Jacobsen and Sergei Popov and Deming Liu and Weijun Tong and Guy Torfs and Johan Bauwelinck and Jiajia Chen and Xin Yin},
  journal={Journal of Lightwave Technology},
  year={2019},
  volume={37},
  pages={356-362}
}
This paper reports the demonstration of high-speed PAM-4 transmission using a 1.5-<inline-formula><tex-math notation="LaTeX">$\mu$</tex-math></inline-formula>m single-mode vertical cavity surface emitting laser (SM-VCSEL) over multicore fiber with 7 cores over different distances. We have successfully generated up to 70 Gbaud 4-level pulse amplitude modulation (PAM-4) signals with a VCSEL in optical back-to-back, and transmitted 50 Gbaud PAM-4 signals over both 1-km dispersion-uncompensated and… 
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