Title :
Analysis of gain characteristics of bi-directionally pumped praseodymium-doped fiber amplifiers
Author :
Ohishi, Yasutake ; Yamada, Makoto ; Kanamori, Terutoshi ; Terunuma, Y. ; Sudo, Shoichi
Author_Institution :
NTT Opto-Electron. Labs., Ibaraki, Japan
fDate :
4/1/1996 12:00:00 AM
Abstract :
Signal gain and noise figure in a bi-directional pumping configuration are investigated in the unsaturated and saturated region. Balanced and asymmetric bi-directional pumping configurations are effective in the unsaturated and saturated region, respectively. Especially, an asymmetric bi-directional pumping configuration with larger backward pump power than forward pump power increases the pump to signal conversion efficiency in the saturated region. An asymmetric pumping configuration is effective in constructing booster amplifiers.
Keywords :
fibre lasers; laser theory; optical pumping; optical saturation; praseodymium; 1.3 mum; asymmetric bi-directional pumping configuration; backward pump power; balanced pumping configuration; bi-directional pumping configuration; booster amplifiers; forward pump power; gain characteristics; noise figure; praseodymium-doped fiber amplifiers; pump to signal conversion efficiency; saturated region; signal gain; unsaturated region; Bidirectional control; Glass; Optical amplifiers; Optical fiber amplifiers; Optical pumping; Optical saturation; Performance analysis; Semiconductor optical amplifiers; Stimulated emission; Zirconium;
Journal_Title :
Photonics Technology Letters, IEEE
