Open AccessEQUIVALENT GAIN EFFECT OF SOLITON PULSES IN THE FIBERS WITH SLOWLY DECREASING DISPERSION
Author(s) -
WenCheng Xu,
Qi Guo,
Changjun Liao,
Songhao Liu
Publication year - 1994
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.43.734
Subject(s) - dispersion (optics) , fiber , soliton , physics , pulse (music) , nonlinear schrödinger equation , optics , single mode optical fiber , nonlinear system , dispersion shifted fiber , optical fiber , materials science , quantum mechanics , fiber optic sensor , detector , composite material
The nonlinear Schr?dinger equation (NLS) including gain effect is derived from quasi-NLS equation which describes the behavior of soliton pulses in the fiber with slowly decreasing dispersion. The solution of this equation and pulse-width evolution expression are given. For step-index profile single-mode fiber, ordinary relationship between fiber structure parameters and gain coefficient are obtained. Numerical simulation shows that the fiber with slowly decreasing dispersion not only can compensate for soliton broadening caused by fiber loss, but also can compress soliton pulses.