Tag: submarine

  • NEC breaks world record for spectral efficiency, close to Shannon limit

    NEC breaks world record for spectral efficiency, close to Shannon limit

    NEC has demonstrated a transmission capacity of 34.9 terabits per second (Tbit/s) on a single optical fiber, over a distance greater than 6,300 km. This achievement breaks the spectral efficiency record for transoceanic transmission, achieving 8.3 bit/s/Hz using the C-band spectrum. This is a 16.9% improvement on the previous record. These results come very close…