Soliton-like pulse timing jitter in dispersion-managed systems

In this paper, the timing jitter in dispersion-managed soliton-like systems with the Caussian pulse is studied by using two methods. Firstly, the derivation of the dynamic equations for the evolution of soliton-like parameters and the timing jitter expressions for the dispersion-managed soliton-like systems are carried out by the perturbed variational method. By analysing and simulating these timing jitter expressions, one can find that the timing jitter is induced by the amplified spontaneous emission noise and the frequency shift, etc. Nonlinear gain can suppress the timing jitter. The chirp sign and the filters action have also effects on the total timing jitter. Secondly, the timing jitter is calculated and analysed by using the moment method. The results of the two methods prove to be consistent with each other.

Abundant exact solutions for a strong dispersion-managed system equation

The generalized nonlinear SchrSdinger equation （NLSE）, which governs the dynamics of dispersion-managed （DM） solitons, is considered. A novel transformation is constructed such that the DM fibre system equation with optical loss （gain） is transformed to the standard NLSE under a restricted condition. Abundant new soliton and periodic wave solutions are obtained by using the transformation and the solutions of standard NLSE. Further, we discuss their main properties and the interaction scenario between two neighbouring solitons by using direct computer simulation.

On Approximating Strongly Dispersion-Managed Solitons

We use a generalized scaling invariance of the dispersion-managed nonlinear Schrodinger equation to derive an approximate function for strongly dispersionmanaged solitons.We then analyze the regime in which the approximation is valid.Finally,we present a method for extracting the underlying soliton part from a noisy pulse,using the resulting approximate formula.

Analytical Method for Designing Grating Compensated Dispersion-Managed Soliton Systems

We show a useful analytical method to design grating compensated dispersion-managed systems. Our method is in good agreement with the numerical results even in the presence of group delay ripples in the chirped fiber gratings.

Performance Optimization of Dispersion-Managed WDM Systems Based on Four-Wave Mixing

We systemically investigate the interchannel four-wave mixing (FWM) in dispersion-managed WDM systems with arbitrary launch position. We optimize the number of fiber sections, and the dispersion ratio for the system performance.

Bi-Soliton Propagation in Dispersion-Managed Line under the Influence of Third-Order Dispersion

We show that bi-soliton which is a periodically stationary pulse consisting of two peaks can propagate in a dispersion-managed line under the influence of third-order dispersion. Numerical averaging method is used to extract bi-soliton from a couple of Gaussian pulses and its stability is studied by a free propagation for a long distance.