Estudo de técnicas de aplicação de fibras compensadoras de dispersão (DCF) em uma rede WDM

Abstract

The purpose of this project to carry out a relevant study of the WDM optical network with limited performance by the chromatic dispersion present in the G.652 optical fibers which perform as means data transmissions. Through the simulations into the OptiSystem software, are created experiments set of methods of correction this dispersive effect through the exchange of modulation of the insert signal of stretch of the dispersion compensating fiber (DCF) along of the transmission line. Four conditions of test were explored: without correction, with agreement of the DCF trek only in transmission (pre-compensating), part in the transmission and part in the reception (symmetric compensation) and full in reception of the data flow (postcompensation). Moreover, each mode had its own behavior signal quality checked when the light bit was modulated with condition NRZ and RZ. With the size of the DCF stretch calculated to each part of the tested network, the practice test environment with symmetrical compensating of the dispersion and also with modulation RZ have shown bit error rate (BER), pleasing the condition required to the data rate of 10 Gb/s. These considerations have shown that the use of the technical of the dispersion chromatic compensating with DCF stretch entry are very efficient to the improvement of the high speed net performances and making viable the increasingly the width of the bandwidth in optical networks, even though when they have shown old cableswhich had not been manufactured in specific parameters constitutive to this purpose.