A computationally efficient dispersion-folded (D-folded) digital backward propagation (DBP) method for nonlinearity compensation of dispersion-managed fiber links is proposed. At the optimum power level of long-haul fiber transmission, the optical waveform evolution along the fiber is dominated by the chromatic dispersion. The optical waveform and, consequently, the nonlinear behavior of the op...

In periodically dispersion managed long-haul transmission systems, waveform distortion is dominated by chromatic dispersion. As a result of the periodic waveform evolution, the nonlinear behavior also repeats itself in every dispersion period. It is shown that, under the weakly nonlinear assumption, nonlinear effects accumulated in a large number (K) of spans can be approximated by nonlinear ef...

An exhaustive and simple method for dispersion flattening in double-clad single-mode fibers is presented. The idea is to generate all such fibers with a certain cutoff wavelength and then find, by one-dimensional minimization and direct inspection, fibers yielding minimum dispersion. As examples, the root mean square chromatic dispersion over the wavelength range (1.25, 1.60 µm) is minimized fo...

494 ISSN: 2278 – 909X All Rights Reserved © 2015 IJARECE  Abstract— Various factors like chromatic dispersion, polarization mode dispersion, non-linear effects, second order and third order dispersion impose limit on the performance of all the optical networks. In this paper, WDM optical system at 40 Gb/s has been investigated for the three dispersion compensation techniques (pre, post and sym...

Abstract In this paper, we propose a dispersion compensation model to minimize the chromatic enhance system performance. The proposed is based on applying duobinary modulation scheme 4-stages of cascaded identical apodized uniform fiber Bragg grating. Different apodization functions are tested determine one that provides best connected in three different connection schemes: pre, post and symmet...