80 Gbit/s transmission over 106 km standard-fiber using optical phase conjugation in a Sagnac-interferometer

We report on 80 Gbit/s transmission over 106 km of standard-fiber (D=16 ps/km/nm) using mid-span spectral inversion by four-wave mixing in a semiconductor optical amplifier, which is inserted in a Sagnac-interferometer for CW-pump suppression.

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