The PCF can be used to improve the pump efficiency of EDFAs because its power confinement factor is higher than that of the conventional erbium doped fibers.
结果表明，光子晶体光纤单模工作波长范围比较宽，功率限制因子比较高，可用于制作更高抽运效率的光纤放大器。
We calculated longitudinal confinement factor, threshold gain, optical gain and output power etc through theoretical model.
根据理论模型计算了纵模限制因子、阈值增益、光增益、输出功率等特征参数。
Meanwhile extinction ratio of converted signal can be improved with low probe power, short probe wavelength, long cavity length, high confinement factor, and large biased current.
减小探测光输入功率，选取短波长探测光波长，增加半导体光放大器的腔长和模场限制因子以及大的偏置电流可提高转换光消光比；
Meanwhile extinction ratio of converted signal can be improved with low probe power, short probe wavelength, long cavity length, high confinement factor, and large biased current.
减小探测光输入功率，选取短波长探测光波长，增加半导体光放大器的腔长和模场限制因子以及大的偏置电流可提高转换光消光比；
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