A novel 3-stage structure for a low-noise, high-gain and gain-flattened L-band erbium doped fiber amplifier.
The configuration of the novel three-stage L-band erbium-doped fiber amplifier with very large and flat gain and very low noise figure presented in this paper uses the forward ASE (amplified spontaneous emission) from the first section of the EDF (erbium-doped fiber) and the backward ASE from the third section of the EDF (both serve as the secondary pump sources of energy) to pump the second EDF. To improve the pump efficiency, the power of the pump is split into two parts (with a ratio of e.g. 2:7). The characteristics of this L-band EDFA are studied on the basis of the Giles Model with ASE.
Qiang
Ze-xuan
ZX
Center for Optical and Electromagnetic Research, State Key Laboratory of Modern Optical Instrumentation, Joint Laboratory of Optical Communications, Zhejiang University, Hangzhou 310027, China. zx_qiang@yahoo.com.cn
He
Sai-ling
SL
Zhang
Xu-liang
XL
Shen
Lin-fang
LF
D000669:Amplifiers, Electronic; D003195:Computer Communication Networks / Q000295:instrumentation*; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D004871:Erbium; D005336:Fiber Optic Technology / Q000295:instrumentation* / Q000379:methods; D008872:Microwaves; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*
D004871:Erbium