Soliton states in a nonlinear directional coupler with intermodal dispersion

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Original languageEnglish
Pages (from-to)27-34
Journal / PublicationPhysics Letters, Section A: General, Atomic and Solid State Physics
Issue number1-2
Publication statusPublished - 19 Aug 2002


We study numerically the propagation of short optical pulses in a nonlinear directional coupler that possesses significant intermodal dispersion. Using the split-step method with fast Fourier transform, we calculate the soliton solutions of such a coupler and highlight the effect of intermodal dispersion on the propagation dynamics of the pulses. We find that the intermodal dispersion has only a small effect on the shape of the soliton states, in spite of the fact that it can distort and break up low-energy pulses launched into one arm of the coupler. The intermodal dispersion, however, can cause a drift in the velocity of the soliton pulses. © 2002 Elsevier Science B.V. All rights reserved.

Research Area(s)

  • Intermodal dispersion, Nonlinear directional couplers, Nonlinear fiber optics, Optical switches, Pulse propagation, Solition