Open AccessResearch on group velocity slowdown in erbium-doped optical fiber under controllable absorption loss
Author(s) -
Wei Qiu,
Yundong Zhang,
Jianbo Ye,
He Tian,
Nan Wang,
Hao Wang,
Jinfang Wang,
Ping Yuan
Publication year - 2008
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.57.2242
Subject(s) - slow light , erbium , slowdown , materials science , absorption (acoustics) , group velocity , optics , optical fiber , oscillation (cell signaling) , pulse (music) , fiber , doping , optoelectronics , physics , chemistry , biochemistry , photonic crystal , detector , political science , law , composite material
Group velocity of the optical pulse propagation would be reduced based on coherent population oscillation effect in an absorbing medium. According to the absorption properties of erbium-doped optical fiber, there would appear a sharp absorption loss, which brought more difficulties to the actual measurement of slow light and its application in communications. From the ground rate equation of erbium-ion, the delay of optical pulse was simulated under controllable absorption loss and experiments were implemented to verify the theoretical results. Moreover, we researched how the different pump power and fiber length effect the signal loss and the optical pulse delay.