Abstract

The effect of fiber chromatic dispersion on the performance of a multichannel optical coherent CPFSK system is analyzed including also the effects of shot and thermal noises and crosstalk interference. The sensitivity penalty is found to increase due to waveform distortion caused by chromatic dispersion. The channel frequency separation is, therefore, required to increase to overcome the dispersion effect. The channel spacing requirements become worse with increase in intermedite frequency (IF) and IF bandwidth.

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