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We report the successful transmission of ten 494.85 Gbit/s DWDM signals on the standard 50 GHz ITU-T grid over 32 100 km of ultra-large-area (ULA) fiber. A net spectral efficiency (SE) of 8.25 b/s/Hz was achieved, after excluding the 20% soft-decision forward-error-correction (FEC) overhead. Such a result was accomplished by the use of a recently proposed polarization-division-multiplexed...
Employing raised-cosine pulse-shaped PDM-36 QAM modulation and both pre- and posttransmission digital equalization, we demonstrate 12.5GHz-spaced, 640 ?? 107 Gbits/s DWDM transmission over 4 ?? 80 km of ultra-large-area fiber with a record capacity of 64 Tb/s at 8 b/s/Hz spectral efficiency.
Employing PDM-RZ-8QAM modulation, digital coherent detection and EDFA-only amplification, we demonstrate 25 GHz-spaced, 320times114Gb/s DWDM transmission through seven spans of ultra-low-loss fiber (average span length/loss of 82.8 km/14.6 dB) with a record capacity of 32Tb/s.
By using PolMux-RZ-QPSK modulation format and digital coherent detection, we have demonstrated 20times112 Gbit/s DWDM transmission over 1540 km of SSMF without using Raman amplification or optical dispersion compensation.
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