Open AccessNonlinear propagation and supercontinuum generation of a femtosecond pulse in photonic crystal fibers
Author(s) -
Chunfu Cheng,
Xiaofang Wang,
Lu Bo
Publication year - 2004
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.53.1826
Subject(s) - supercontinuum , photonic crystal fiber , materials science , optics , femtosecond , nonlinear photonic crystal , dispersion (optics) , laser , photonic crystal , raman scattering , self phase modulation , fiber laser , pulse (music) , optoelectronics , optical fiber , nonlinear optics , raman spectroscopy , physics , detector
A theoretical investigation with the method of split-step Fourier is presented on the nonlinear propagation and supercontinuum generation of a femtosecond laser pulse in a photonic crystal fiber. The impact of high-order dispersion and nonlinear effects on spectral shape and band width is simulated and analyzed. It is found that soliton self-frequency shift is generated in a photonic crystal fiber. It is also found that intrapulse stimulated Raman scattering and self-phase modulation result in the fine spectral substructure of the supercontinnum. The band width and smoothing of the supercontinuum are found to be related to the higher-order dispersion and the power of the initial laser pulse.