论文部分内容阅读
对新型宽带碲基掺铒光纤放大器(EDTFA)多信道间的增益演变关系进行了理论仿真。仿真结果表明:EDTFA多信道间的增益存在着一个竞争过程,竞争的强弱取决于碲基掺铒光纤内的能级粒子数分布;当上能级粒子数处于反转分布态时,具有较大的发射截面与吸收截面差值的波长信道拥有相对较大的竞争优势,可获得相对较高的信号增益;当上能级粒子数处于未反转分布态时,具有较大的发射截面与吸收截面比值的波长信道拥有相对较大的增益竞争优势。
The theoretical simulation of the gain evolution of the new wideband tellurium-based erbium-doped fiber amplifier (EDTFA) multi-channel is carried out. The simulation results show that there exists a competition between the gain of EDTFA multi-channel, the strength of the competition depends on the energy level particle number distribution in the Er-doped Erbium-doped fiber. When the upper energy level particle is in the inverted distribution state, The wavelength channel with large emission cross section and absorption cross section difference has a relatively large competitive advantage and can obtain a relatively high signal gain. When the upper energy level particle is in the non-inverted distribution state, it has a larger emission cross section and Wavelength channels that absorb the cross-sectional ratio have a relatively large gain-competitive advantage.