论文部分内容阅读
通过分析掺铒(Er3+)玻璃波导放大器(EDWA)的放大增益机理,提出抽运光与信号光光模场分布之间的归一化重叠积分因子(Γ),并引入到掺铒波导放大器增益模拟计算中,使理论模型更切合实际。以Ag+-Na+二次离子交换工艺制作的具有埋入型渐变折射率分布的掺铒波导放大器为例,采用数值方法模拟了条形波导截面上的二维折射率分布及抽运光、信号光的光模场分布。计算了不同工艺参量设置下的Γ大小,讨论Γ对放大器增益的影响。结果显示,在二次离子交换制作过程中设置适当工艺参量优化折射率分布,能有效改善波导中抽运光与信号光光模场分布之间的重叠因子,提高掺铒波导放大器的增益。计算结果显示,在一定条件下,Γ从0.5增至0.8,每厘米长度掺铒波导放大器的放大增益可提高近1.5 dB。
By analyzing the amplification gain mechanism of erbium doped (Er3 +) glass waveguide amplifier (EDWA), a normalized overlapping integral factor (Γ) between the pump light and the signal light optical mode field is proposed and introduced into the gain of the erbium waveguide amplifier In the simulation, make the theoretical model more realistic. Taking the Erbium-doped waveguide amplifier with embedded graded-index distribution fabricated by Ag + -Na + secondary ion exchange process as an example, the two-dimensional refractive index distribution and the pump light, signal light Of the optical mode field distribution. The Γ size under different process parameters is calculated and the effect of Γ on the gain of the amplifier is discussed. The results show that the optimal refractive index distribution can be achieved by adjusting the appropriate process parameters in the process of secondary ion exchange, which can effectively improve the overlap factor between the pump light and the distribution of signal light and enhance the gain of the EDFA. The calculated results show that under certain conditions, Γ increases from 0.5 to 0.8, and the amplification gain of erbium-doped waveguide amplifier per centimeter can be increased by nearly 1.5 dB.