Hu, QianQianHuSchuh, KarstenKarstenSchuhAref, VahidVahidArefBuchali, FredFredBuchaliTannert, TobiasTobiasTannertGrözing, MarkusMarkusGrözingBerroth, ManfredManfredBerrothSchmidt, ChristianChristianSchmidtSchostak, JonathanJonathanSchostakCaspar, ChristophChristophCasparChoi, Jung HanJung HanChoiJungnickel, VolkerVolkerJungnickelFreund, RonaldRonaldFreund2023-06-282023-06-282022https://publica.fraunhofer.de/handle/publica/44491710.1364/SPPCOM.2022.SpTh1I.62-s2.0-85146724238We report on a SiGe analog multiplexer operating at 128-GSa/s, supporting generation of 63.36-GHz-broad DSCM-PCS-256QAM signal. We successfully achieve net information rate normalized per electrical lane of 2.85-bit/sym/lane back-to-back and 2.81-bit/sym/lane after transmission over 80-km SSMF in a coherent system.enconference paper