Probabilistic Shaping for High-Speed Unamplified IM/DD Systems with an O-Band EML

no code implementations • 30 Mar 2023 • Md Sabbir-Bin Hossain, Georg Bocherer, Talha Rahman, Tom Wettlin, Nebojsa Stojanovic, Stefano Calabro, Stephan Pachnicke

Probabilistic constellation shaping has been used in long-haul optically amplified coherent systems for its capability to approach the Shannon limit and realize fine rate granularity.

Experimental Comparison of PAM-8 Probabilistic Shaping with Different Gaussian Orders at 200 Gb/s Net Rate in IM/DD System with O-Band TOSA

no code implementations • 14 Jun 2022 • Md Sabbir-Bin Hossain, Georg Böcherer, Youxi Lin, Shuangxu Li, Stefano Calabrò, Andrei Nedelcu, Talha Rahman, Tom Wettlin, Jinlong Wei, Nebojša Stojanović, Changsong Xie, Maxim Kuschnerov, Stephan Pachnicke

For 200Gb/s net rates, cap probabilistic shaped PAM-8 with different Gaussian orders are experimentally compared against uniform PAM-8.

Experimental Comparison of Cap and Cup Probabilistically Shaped PAM for O-Band IM/DD Transmission System

no code implementations • 18 May 2022 • Md Sabbir-Bin Hossain, Georg Boecherer, Talha Rahman, Nebojsa Stojanovic, Patrick Schulte, Stefano Calabrò, Jinlong Wei, Christian Bluemm, Tom Wettlin, Changsong Xie, Maxim Kuschnerov, Stephan Pachnicke

For 200Gbit/s net rates, uniform PAM-4, 6 and 8 are experimentally compared against probabilistic shaped PAM-8 cap and cup variants.

Complexity Reduction of Volterra Nonlinear Equalization for Optical Short-Reach IM/DD Systems

no code implementations • 29 May 2020 • Tom Wettlin, Talha Rahman, Jinlong Wei, Stefano Calabrò, Nebojsa Stojanovic, Stephan Pachnicke

We show an example, in which the number of third-order kernels is halved without any appreciable performance degradation.