401 km, 622 Mb/s and 357 km, 2.488 Gb/s IM/DD repeaterless transmission experiments using erbium-doped fiber amplifiers and error correcting code

Record repeaterless transmission distances of 401 km at 622 Mb/s and 357 km at 2.488 Gb/s on nondispersion-shifted fiber are demonstrated. The transmission format is intensity modulation/direct detection (IM/DD), and a forward error correcting code scheme is implemented. Erbium-doped fiber amplifiers are used at the transmit and receive end of the system as postamplifier, preamplifier, and remotely pumped amplifier.<
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