Self-frequency shift effect for chirped self-similar solitons in a tapered graded-indexed waveguide

Houria Triki, Qin Zhou*, Anjan Biswas, Si Liu Xu, Abdullah Kamis Alzahrani, Milivoj R. Belic

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

This work studies the transmission dynamics of self-similar optical beams through an inhomogeneous tapered graded-index waveguide under diffraction and nonlinearity management as well as self-frequency shift arising from stimulated Raman scattering (SRS). A similarity transformation connecting with the constant-coefficient higher-order nonlinear Schrö dinger's equation (HNLSE) is employed to construct new self-similar solitons for wave field. We demonstrate that the self-frequency shift term alone turns the self-similar pulses to be nonlinear chirped. The results indicate that the nonlinear chirp related to the self-similar localized waves is directly proportional to the intensity of the optical beam. The necessary and sufficient conditions on tapered graded-index nonlinear waveguide parameters for such nonlinearly chirped self-similar localized waves exist in this model are suggested. The dynamical behaviors of those chirped optical similaritons are also investigated in a periodically distributed waveguide as well as a diffraction decreasing waveguide.

Original languageEnglish
Article number125800
JournalOptics Communications
Volume468
DOIs
Publication statusPublished - 1 Aug 2020
Externally publishedYes

Keywords

  • Chirp
  • Similaritons
  • Solitons

Fingerprint

Dive into the research topics of 'Self-frequency shift effect for chirped self-similar solitons in a tapered graded-indexed waveguide'. Together they form a unique fingerprint.

Cite this