Open AccessNoise figure measurements on Nd and Yb doped double-clad fiber amplifiers
Author(s) -
P. Weßels,
Carsten Fallnich
Publication year - 2003
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.11.001531
Subject(s) - optics , neodymium , ytterbium , materials science , amplifier , noise figure , doping , noise (video) , optical amplifier , optoelectronics , fiber laser , fiber amplifier , optical fiber , physics , laser , computer science , cmos , artificial intelligence , image (mathematics)
We present comparative noise figure measurements on neodymium and ytterbium doped double-clad fiber amplifiers. While the neodymium doped amplifier showed the quantum-limited noise figure of 3 dB, the ytterbium doped amplifier exhibited excess noise due to its three-level system. We compared optical and electrical methods with respect to the accuracy and the suitability for high power measurements.