Comparison of PAM-6 Modulations for Short-Reach Fiber-Optic Links with Intensity Modulation and Direct Detection

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May 11, 2022
Tobias Prinz, Thomas Wiegart, Daniel Plabst, Talha Rahman, Md Sabbir-Bin Hossain, Nebojša Stojanović, Stefano Calabrò, Norbert Hanik, Gerhard Kramer
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PAM-6 transmission is considered for short-reach fiber-optic links with intensity modulation and direct detection. Experiments show that probabilistically-shaped PAM-6 and a framed-cross QAM-32 constellation outperform conventional cross QAM-32 under a peak power constraint.

* submitted to European Conference on Optical Communication (ECOC) 2022  
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