Open AccessSuppressing stimulated Brillouin scattering in fiber amplifiers using nonuniform fiber and temperature gradient
Author(s) -
Anping Liu
Publication year - 2007
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.15.000977
Subject(s) - materials science , optics , brillouin scattering , polarization maintaining optical fiber , graded index fiber , dispersion shifted fiber , double clad fiber , fiber , fiber optic sensor , plastic optical fiber , core (optical fiber) , amplifier , photonic crystal fiber , mode volume , optical fiber , fiber amplifier , optoelectronics , fiber laser , physics , composite material , cmos
A nonuniform large mode area fiber having an larger core at most locations to reduce power intensity and having a relatively smaller core at certain locations to reduce bending sensitivity is proposed for suppression of stimulated Brillouin scattering (SBS) in a high power fiber amplifier. A comprehensive model taking into account fiber nonuniformity, profile and temperature gradient shows that the fiber can achieve kilowatt output at a temperature gradient of >250 degrees C. Compared with a conventional large mode area fiber, a total of 7 dB SBS suppression can be achieved using this unique fiber.