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



IEEE Photonics Technology Letters 11 (1999), No.8, pp.1063-5
ISSN: 1041-1135
Journal Article
Fraunhofer HHI ()
light interferometers; multiwave mixing; optical communication equipment; optical fibre amplifiers; optical fibre communication; optical fibre dispersion; optical phase conjugation; semiconductor optical amplifiers; time division multiplexing; sagnac-interferometer; midspan spectral inversion; optical phase conjugated signal; four-wave mixing; semiconductor optical amplifier; soa; continuous-wave-pump suppression; transmission distance; residual pulse broadening; second-order dispersion; 80 Gbit/s; 106 km

We report on 80-Gb/s transmission over 106 km of standard-fiber (D=16 ps/km/nm) using midspan spectral inversion. The optical phase conjugated signal is generated by four-wave mixing in a semiconductor optical amplifier (SOA). The SOA is implemented in a Sagnac-interferometer in order to achieve an efficient continuous-wave-pump suppression. Accompanying simulations show, that at 80 Gb/s, the transmission distance can hardly be enhanced due to the residual pulse broadening by second-order dispersion.