[WB1] Data Center Interconnect

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[WB1-3] Adjustable Trellis-Path Limitation MLSE Based on Preceding Equalizer Output for O-Band Net 400-Gbps PAM-6 IM-DD 2-km Transmission

○Hiroki Taniguchi¹, Shuto Yamamoto¹, Masanori Nakamura¹, Yukinobu Nakajima¹, Etsushi Yamazaki¹ (1. NTT Network Innovation Laboratories (Japan))

Keywords:

Digital signal processing algorithms for optical communications

We propose an adjustable trellis-path limiting method in MLSE using the preceding filter’s output, enabling IM-DD 2-km O-band PAM-6 transmission over 400 Gbps/lane while reducing the calculation complexity to 0.13% that of conventional MLSE.