0.5 Tbit/s WDM transmission experiment over 7760km with 28 nm available optical pass-bandwidth

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Abstract
48 × 10 Gbit/s WDM signals have been successfully transmitted over 7760 km with a Q factor of > 15.6 dB. Using broadband gain equalisation and a higher-order dispersion managed line, an available optical pass bandwidth in excess of 28 nm has been obtained.