Experimental study and numerical modelling of a 3 × 100G DP-QPSK superchannelстатья
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Дата последнего поиска статьи во внешних источниках: 17 октября 2017 г.
Аннотация:Crosstalk effects are studied experimentally in a DWDM
line with 100G DP-QPSK channels at a frequency convergence of
the channels (three channels with a frequency separation of 50,
37.5 and 33 GHz) in the C-band. Spans of 100 km in length are
used, with the number of spans varying from one to six. The required
optical signal-to-noise ratio (OSNRR) is determined experimentally
for a different number of spans, interchannel intervals and
input power. We propose a theoretical model based on the numerical
modelling that describes the influence of adjacent channels at a
strong convergence. The model is calibrated using the obtained
experimental data. Based on the proposed model, we calculate the
maximal value of the spectral efficiency in systems with a dense
arrangement of 100G DP-QPSK channels (~3.2 bit s–1 Hz–1).