• A
  • A
  • A
  • ABC
  • ABC
  • ABC
  • А
  • А
  • А
  • А
  • А
Regular version of the site
  • HSE University
  • Publications of HSE
  • Articles
  • Динамика высокочастотных солитонов в средах с индуцированным рассеянием на затухающих низкочастотных волнах и неоднородной дисперсией и нелинейностью

Article

Динамика высокочастотных солитонов в средах с индуцированным рассеянием на затухающих низкочастотных волнах и неоднородной дисперсией и нелинейностью

Evolution of solitons is addressed in the framework of an extended nonlinear Schrödinger equation (NLSE), including a pseudo-stimulated-Raman-scattering (pseudo-SRS) term, i.e., a spatial-domain counterpart of the SRS term which is well known as an ingredient of the temporal-domain NLSE in optics. In the present context, it is induced by the underlying interaction of the high-frequency envelope wave with a damped low-frequency wave mode. Also included are spatial inhomogeneity of the second-order dispersion (SOD) and self-phase modulation (SPM). It is shown that the wavenumber downshift of solitons, caused by the pseudo-SRS, may be compensated by an upshift provided by the increasing SPM and decreasing SOD coefficients. Analytical results agree well with numerical results