2 Gbit/s optical CPFSK heterodyne transmission through 200 km single-mode fibre

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Abstract
The amplitude distortion of a continuous phase FSK signal due to fibre chromatic dispersion is measured. We also report a 2 Gbit/s optical CPFSK heterodyne detection transmission experiment. Since there was no chirping degradation, it was possible to transmit the signal through a 200 km single-mode fibre.