Demonstration of C-band, $50- text{Gbit}/ mathrm{s} times 4 lambda$ Single-Sideband-NRZ-Signal Transmission through 40-km SMF using 25G-class APD and Simple Feed-Forward Equalizer for Direct-Detection based 50G- TWDM-PON. - Ryo Koma; Jin Uchiyama; Kazutaka Hara; Jun-ichi Kani; Tatsuya Shimada (ECOC, 2025)

New Chromatic Dispersion Digital Pre-Compensation Method using FIR Coefficients Optimized from Upstream Burst-Mode signals in IMDD/Coherent Hybrid PON. - Jin Uchiyama; Ryo Koma; Kazutaka Hara; Ryo Igarashi 001; Jun-ichi Kani; Tatsuya Shimada (OFC, 2026)