双泵浦光纤参量放大器中泵浦与光纤长度选取的研究

Optimized design of dual-pump fiber-optic parametric amplifier

研究了强非线性色散位移光纤和光子晶体光纤中的光纤参量放大增益特性.结果表明,在泵浦光功率低于受激布里渊散射阈值的条件下,当两泵浦光功率相等且功率之和与光纤长度的乘积满足某一特定值时,可得到最佳增益谱平坦性、增益峰值、增益带宽等参数;适当改变光纤长度或泵浦光功率,可以优化光纤参量放大.

The characteristic of fiber-optic parametric amplification in the highly nonlinear dispersionshifted fiber and photonic crystal fiber were researched in detail. The results show that when the pump powers are lower than the stimulated Brillouin Scattering threshold and the product of the sum of the two equal pump powers and the length of fiber is content to a certain value, the best possible spectrum with flattering, maximum and bandwidth can be gained. Under this condition, changing the length of fiber or pump power can optimize fiber-optic parametric amplification.