Reducing pulse distortion in fast-light pulse propagation through an erbium-doped fiber amplifier.
When a pulse superposed on a cw background propagates through an erbium-doped fiber amplifier with a negative group velocity, either pulse broadening or pulse compression can be observed. These effects can be explained in terms of two competing mechanisms: gain recovery and pulse spectrum broadening. The distortion of the pulse shape caused by these effects depends on input pulse width, pump power, and background-to-pulse power ratio. With the proper choice of these three parameters, we can obtain significant pulse advancement with minimal pulse distortion.
Shin
Heedeuk
H
The Institute of Optics, University of Rochester, Rochester, NY 14627, USA.
Schweinsberg
Aaron
A
Gehring
George
G
Schwertz
Katie
K
Chang
Hye Jeong
HJ
Boyd
Robert W
RW
Park
Q-Han
QH
Gauthier
Daniel J
DJ