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Second and third order dispersion effects analyzed by the split-step Fourier method for soliton propagation in optical fibers

A. FAZACAS1,2,* , P. STERIAN1

Affiliation

  1. Academic Center for Optical Engineering and Photonics, Faculty of Applied Sciences, University “Politehnica” Bucharest, Romania
  2. Institute of Atomic Physics, Magurele, Romania

Abstract

We present the Split-Step Fourier Method to analyze second and third order dispersion effects in optical fibers. The numerical method was used to simulate solitons propagation and their potential application in the high-speed transmission of information (Tbit/s). Its use in this type of systems is very useful but it is needed to make major changes in the system design. In this paper the NLSESolver Program was used to simulate the soliton propagation.We also discuss higher order solitons that can be used for nonlinear pulse compression, but this lead to a critical choice of the pump wavelength. It is well known that a Sech-shaped pulse with a suitable energy, injected into an optical fiber with anomalous dispersion, can evolve as a higher-order soliton and after certain propagation distance the pulse duration can be substantially decreased. Higher order soliton can break up into fundamental soliton, process that can be used in supercontinuum generation in photonic crystal fibers with applications ranging from sensors, waveguide devices to lasers..

Keywords

Soliton, Split step method, Optical fibers, Second order dispersion, Third order dispersion.

Submitted at: Sept. 8, 2011
Accepted at: April 11, 2012

Citation

A. FAZACAS, P. STERIAN, Second and third order dispersion effects analyzed by the split-step Fourier method for soliton propagation in optical fibers, Journal of Optoelectronics and Advanced Materials Vol. 14, Iss. 3-4, pp. 376-382 (2012)