Comparison of pre-, post- and symmetrical-dispersion compensation schemes for 10 Gb/s NRZ links using standard and dispersion compensated fibers

摘要

In this paper, we investigate pre-, post- and symmetrical-dispersion compensation methods for 10 Gb/s non-return to zero (NRZ) links using standard and dispersion compensated fibers through computer simulations to optimize high data rate optical transmission. The influence of EDFA power and increase in length of each type of fiber has been studied to evaluate the performance of optical communication systems. The performance characteristics like bit error rate, eye diagrams and eye closure penalty at the output are studied by simulating different systems. The results of three compensation methods have been compared and it is found that the symmetrical compensation method is superior to pre- and post-compensation methods. On comparing pre- and post-compensation methods, it is found that the later is superior to the former. Further. it has also been observed that system needs proper matching between the EDFA power and length of the fiber for optimum performance. (C) 2002 Elsevier Science B.V. All rights reserved. [References: 22]