掺铒光纤辐射效应对光纤光源输出特性的影响

Influence of Erbium-Doped Fiber′s Radiation Effects on Output Characteristics of Fiber Source

对掺铒光纤进行了伽马辐照实验,根据辐照前后掺铒光纤的吸收系数和发射系数测试数据,计算了掺铒光纤的吸收截面和发射截面。基于幂律模型建立了掺铒光纤吸收截面和发射截面的辐射模型。将吸收截面和发射截面的辐射模型代入掺铒光纤光源模型中,仿真分析了掺铒光纤的辐射效应对掺铒光纤光源输出光谱及其特征参数的影响。结果表明:与辐照前相比,掺铒光纤被辐照后,光纤光源的输出功率从9.32mW衰减到4.30mW;平均波长从1531.60nm漂移到1531.19nm;谱宽从8.79nm变化到6.78nm。最后通过实验验证了仿真结果的正确性。

A gamma irradiation experiment is conducted on erbium-doped fiber,and its′absorption and emission cross sections are calculated according to measured absorption and emission coefficients of erbium-doped fiber before and after irradiation.Radiation models of absorption and emission cross sections are built up based on power law model.Radiation effects on the output spectrum shape and characteristics parameters of erbium-doped fiber source are simulated and analyzed based on the radiation models of absorption and emission cross sections being put into the model of erbium-doped fiber source.The simulation results show that after gamma irradiation,the output power of source decreases from 9.32 mW to 4.30 mW,the mean wavelength moves from 1531.60 nm to 1531.19 nm,and the band width varies from 8.79 nm to 6.78 nm.Finally,the simulation results are verified experimentally.