Real-time 6-Mode 19-Core Fiber Transmission. - Shohei Beppu; Masahiro Kikuta; Daiki Soma; Yoichi Yaegashi; Koji Igarashi; Masahiro Shigihara; Kazuhiko Aizawa; Noboru Yoshikane; Takehiro Tsuritani (OFC, 2023)