Modelling the transmission of a 40-Gbit s–1 NRZ-ADPSK signal in 50-GHz networksстатья
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Дата последнего поиска статьи во внешних источниках: 15 января 2016 г.
Аннотация:We study numerically the effect of linear and nonlinear
distortions on the transmission of a 40-Gbit s–1 NRZ-ADPSK
signal. The results of the numerical simulation coincide within the
measurement accuracy with the experimental data, which indicates
the adequacy of the mathematical model of the communication line,
transmitter and receiver. We have found experimentally and
numerically that in communication systems based on a standard
telecommunication fibre negative dispersion (approximately –160
ps nm–1) introduced into the signal being transmitted provides an
increase in the maximum admissible signal power coupled into a
span and in the value of the admissible attenuation of the spans at
2 dB. It is established that nonlinear distortions caused by the presence
of adjacent channels in a frequency network with a step of 50
and 100 GHz (crosstalks) are insignificant in comparison with the
interchannel nonlinear distortions.