Open AccessAdaptive mode control of a few-mode fiber by real-time mode decomposition
Author(s) -
Liangjin Huang,
Jinyong Leng,
Pu Zhang,
Shan Guo,
Hongliang Lü,
Xin Cheng
Publication year - 2015
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.23.028082
Subject(s) - mode volume , optics , polarization maintaining optical fiber , equilibrium mode distribution , fiber laser , multi mode optical fiber , modal , dispersion shifted fiber , fiber , materials science , mode scrambler , polarization controller , graded index fiber , optical fiber , laser beam quality , polarization (electrochemistry) , fiber optic sensor , laser , physics , laser beams , polymer chemistry , composite material , chemistry
A novel approach to adaptively control the beam profile in a few-mode fiber is experimentally demonstrated. We stress the fiber through an electric-controlled polarization controller, whose driven voltage depends on the current and target modal content difference obtained with the real-time mode decomposition. We have achieved selective excitations of LP01 and LP11 modes, as well as significant improvement of the beam quality factor, which may play crucial roles for high-power fiber lasers, fiber based telecommunication systems and other fundamental researches and applications.