Abstract
We use numerical simulations based on the split-step method to study the compensation of the chromatic dispersion in a point-to point link consisting of a Standard fiber followed by a dispersion compensation fiber in a post-compensation scheme. Two types of compensation fibers, with positive and negative dispersion slope, are considered, and we analyze the propagation of a pulse using three channels located at 1535, 1550 and 1560 nm. Our analysis is done for a wide range of the input peak power (0.6 mW≤ P 0≤80 mW), and includes effects due to loss, first and second chromatic dispersion, and self-phase modulation (SPM). Effects due to the interaction among the channels are not included in this work. The performance using each of the two compensation fibers studied here are compared. Our results show that the choice of the compensation fiber (i.e., its dispersion slope) to be used in a certain DWDM system has to take into account the total width of the wavelength band of operation and the input peak power. Our results suggest that compensation fibers with negative dispersion slope lead to good performance in a wide wavelength band.
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