Open AccessEffect of Raman gain on the self-steepening characteristic in isotropic fibers
Author(s) -
Baolin Liu,
Weijuan Jia,
Yuping Wang,
Qiao Hai-Long,
Xudong Wang,
Ke Neimule
Publication year - 2014
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.63.214207
Subject(s) - raman spectroscopy , optics , pulse (music) , physics , isotropy , dispersion (optics) , gaussian , raman scattering , materials science , attenuation coefficient , quantum mechanics , detector
Under the condition that the light pulses meet the slowly varying function pulses, the higher-order nonlinear Schrödinger equation has been deduced by taking into consideration the Raman gain. The linear operator and nonlinear operator specific expressions are obtained using split-step Fourier numerical method. The Raman gain on the self-steepening of the Gaussian pulse has been simulated and then the result is compared with the self-steepening effect without taking into consideration the Raman gain when the pulse propagate in the isotropic optical fiber. Raman gain specific impact on the self-steepening of the Gaussian pulse has been obtained under different conditions. Results show that the Raman gain may affect the Gaussian pulse broadening, pulse peak attenuation as well as the oscillation of the edge. These influences depend on the parameters of self-steepening, input power, and dispersion coefficient.