Open AccessHigh efficiency tandem-pumped fiber amplifier
Author(s) -
Xiao Hu,
Jinyong Leng,
Wuming Wu,
Xiaolin Wang,
Yanxing Ma,
Pu Zhang,
Xiaojun Xu,
zhao guo-min
Publication year - 2011
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.60.124207
Subject(s) - materials science , power added efficiency , amplifier , fiber laser , fiber bragg grating , optoelectronics , tandem , dispersion shifted fiber , optics , direct coupled amplifier , laser power scaling , operational transconductance amplifier , fiber , rf power amplifier , operational amplifier , laser , fiber optic sensor , physics , wavelength , cmos , composite material
A 1020 nm fiber laser is designed based on fiber Bragg grating and then its output power is boosted to 590 mW through a two-stage amplifier. A tandem pumping fiber amplifier is constructed with the 1020 nm laser used as a pump source. The output power and the efficiency of the amplifier are measured with different lengths of gain fiber. A 385 mW maximum output power with an 81% slope-efficiency is achieved when the gain fiber is 8.5 m. The output power and the efficiency of a traditional amplifier in which 976 nm diode laser is used as a pump source are also measured. The experimental results indicate that tandem pumping fiber amplifier can achieve a higher efficiency than traditional fiber amplifier.