A Chinese team recently set a world record by achieving 3.2 petabits per second throughput on a single optical fiber strand using a combination of C, L, and S bands. By employing 24 optical cores and tripling the usable spectrum, they reached aggregate throughput of 3.2 Tbps, with each core achieving 133 Tbps. This advancement highlights the potential for expanding bandwidth through innovative optical technologies, particularly in terrestrial networks.