Open AccessGeneral analysis of the mode interaction in multimode active fiber
Author(s) -
Hongliang Lü,
Pu Zhang,
Xiaolin Wang,
Zongfu Jiang
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.006456
Subject(s) - multi mode optical fiber , mode volume , optics , physics , mode (computer interface) , graded index fiber , fiber , mode scrambler , polarization maintaining optical fiber , single mode optical fiber , optical fiber , dispersion shifted fiber , plastic optical fiber , materials science , fiber optic sensor , computer science , composite material , operating system
General analysis of the mode interaction in multimode fiber is presented in this paper. By taking local gain into consideration, the general coupled mode equations in multimode active fiber are deduced in the model and the effect of various factors can be analyzed based on the general coupled mode equations. Analytical expression of the beam quality factor is deduced for the optical field emerging from the multimode active fiber. The evolution of the mode power and M2 factor along the fiber are analyzed by numerical evaluations.