(National Institute of Information and Communications Technology (NICT)) The National Institute of Information and Communications Technology, Sumitomo Electric Industries, Ltd. and Optoquest Co., Ltd. succeeded in experimental transmission at 10.66 Pb/s, achieving a spectral efficiency of 1158.7 bps/Hz. This result exceeded the previous record of 10.16 Pb/s. We develop an optical fiber that supports the transmission of three transverse modes in 38 cores with reduced relative propagation delays between modes, and demonstrated its suitability for high spectral efficiency modulation, namely 256QAM and 64QAM.

Original source: https://www.eurekalert.org/pub_releases/2020-02/nioi-dow021420.php