Timing jitter in soliton transmission with up- and down-sliding-frequency guiding filters

2004

Laser Phys. Lett.

Using a variational approach, an exact analytical expression is derived for the variance of the timing jitter of a dispersion-managed soliton in the presence of lumped narrowband filters. The asymptotic timing jitter shows a linear dependence with distance, which is in contrast with the cubic dependence in the unfiltered case. We show that the suppression of the timing can be achieved by choosing conveniently the position and the strength of the optical filter.

“…This background instability can be avoided by sliding the center frequency of the filter [5,6], or using nonlinear gain to compensate for the filter induced loss [16].…”

Section: Timing Jitter Controlmentioning

confidence: 99%

Analysis of the timing jitter of dispersion-managed solitons controlled by filters

2004

Laser Phys. Lett.

“…These rely on the placement of additional components within the transmission path to suppress the accumulation of timing and amplitude errors. The two most common approaches demonstrated to date have been spectral filtering, of using either fixed-or sliding-frequency variants 6 4− , and synchronous modulation 7 .…”

Section: Introductionmentioning

confidence: 99%

Perturbation theory of dispersion-managed fiber solitons

2007

SPIE Proceedings

A variational approach with an arbitrary ansatz is used to derive the governing equations for the characteristic parameters of dispersion-managed solitons. The Gaussian pulses are considered as a particular case. Moreover, the adiabatic evolution equations of the dispersion-managed pulse parameters under perturbations are derived, considering an arbitrary pulse profile. The theory is applied to the case of Gaussian pulses under different types of perturbations, such as the amplifier noise, nonlinear interaction between pulses, and polarization-mode dispersion.

“…Control methods such as the use of guiding filters (with its frequency fixed or sliding) 4 2− and synchronous modulation 5 were studied not only to stabilize the signal pulse but also to eliminate low-power noise. Indeed, for conventional soliton-based systems, the combination of modulation and filtering not only leads to temporal and spectral reshaping of the pulses but also suppresses noise accumulation, which results in virtually unlimited error-free propagation distances for single-channel bit-rate transmissions of 40 and 80 Gb/s 8 6− .…”

Section: Introductionmentioning

confidence: 99%

Timing jitter in dispersion-managed soliton transmission systems

2006

SPIE Proceedings

An exact analytical solution is derived for the variance of the timing jitter of a dispersion-managed soliton in the presence of synchronous amplitude modulators and filters. We show that, for a given position of these control elements, a total suppression of the timing jitter is possible, which will permit unlimited error free transmission distances of DM solitons. However, if only the modulator or the filter is used, the asymptotic behavior of the timing jitter shows a linear dependence with distance, which is in contrast with the cubic dependence in the uncontrolled case.