A custom silicon-photonic recurrent spectral filter, used as a two-node optical pre-processor with a simple digital equalizer, keeps 32-GBd PAM-4 C-band IM/DD transmission below FEC thresholds up to 100 km.
Advanced Neural Network-Based Equalization in Intensity-Modulated Direct-Detection Op- tical Systems: Current Status and Future Trends
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Integrated recurrent optical spectral slicer for equalization of 100-km C-band IM/DD transmission
A custom silicon-photonic recurrent spectral filter, used as a two-node optical pre-processor with a simple digital equalizer, keeps 32-GBd PAM-4 C-band IM/DD transmission below FEC thresholds up to 100 km.