Open AccessLarge-mode-area ytterbium-doped fiber amplifier with distributed narrow spectral filtering and reduced bend sensitivity
Author(s) -
Thomas Tanggaard Alkeskjold
Publication year - 2009
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.17.016394
Subject(s) - optics , materials science , ytterbium , passband , dispersion shifted fiber , amplified spontaneous emission , fiber laser , photonic crystal fiber , polarization maintaining optical fiber , raman scattering , amplifier , optoelectronics , optical fiber , fiber optic sensor , wavelength , band pass filter , doping , raman spectroscopy , laser , physics , cmos
A large-mode area polarization maintaining single-mode ytterbium-doped fiber amplifier with distributed narrow passband filtering is demonstrated. The fiber passband is 40 nm wide and centered at 1070 nm for efficient filtering of both short- and long-wavelength amplified spontaneous emission as well as stimulated raman scattering and four-wave-mixing. The fiber shows reduced bend sensitivity, has a mode field diameter of 27 microm and exhibits a slope efficiency of more than 65%.