Abstract
This paper investigates the influence of laser phase noise in dispersion supported transmission systems performance. It is shown that the relative intensity noise enhancement at fiber output due to fiber nonlinearity, observed in the anomalous propagation regime, can reduce considerably the maximum transmission distance achievable by dispersion supported transmission systems operated at 2OGbit/s. The results indicate that for a power at fiber input of 10mW, the maximum transmission distance achievable by dispersion supported transmission systems operated at 2OGbitJs is reduced from about 70km to 48km when the influence of laser phase noise is taken into account. The influence of laser phase noise in intensity modulated with direct detection systems performance operated at 2OGbit/s is also assessed and compared with the correspondent dispersion supported transmission systems operated at the same bit rate. The results indicate that dispersion supported transmission systems are much more sensitive to laser phase noise, than the intensity modulated with direct detection systems.
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