Resumo:
Optical fiber transmission has been widely used due to the possibility of achieving high
bit rates, when compared to coaxial cable systems or wireless networks. In addition to
advantages such as low dispersion, immunity to electromagnetic interference, low and
constant attenuation, reduced weight, size and cost. However, there are inherent effects
on the structure that limit the capacity of optical communication systems. Due to growing
demand for high transmission rates, analyzing the impact of these phenomena on such
systems is essential for their implementation. Thus, in this work, the impact of degrading
effects due to the insertion of optical noise and limitations of electro-optical modulator on
channels with transmission rates of 1Tb/s is evaluated through numerical simulations, by
BER and OSNR metrics, analyzing the modulator parameters such as band and extinction
rate of the component. The results of these simulations indicate that the channels
are highly impacted by limitations in the electro-optical band of the modulators used in
their generation. Although, it is still possible to reach distances greater than 750 km for
64-QAM modulation scheme and 250 km for 256-QAM modulation scheme.
