作者提出了一种使用半导体激光器泵浦两级高掺杂掺铥光纤的增益位移放大器方案。采用此方案的光纤放大器在30 nm工作带宽上光增益大于20 dB
饱和输出功率大于17 dBm
噪声指数为5.9
6
.2 dB。
Abstract
In this paper
we first introduce the basic operating principle of Thulium-Doped Fiber Amplifier(TDFA) and Gain-Shifted TDFA(GS-TDFA) and analyze different pumping wavelength options.Then
we propose a dual-stage GS-TDFA scheme
in which high concentration doping TDF and laser diode pumps are used.The prototype fiber amplifier in this struc-ture achieves optical gain greater than 20 dB
saturated output power higher than 17 dBm and NF in the range of 5.9-6.2 dB in 30 nm operating bandwidth.