中文摘要：

根据高双折射色散位移光纤中参量放大和拉曼散射共同作用下的耦合波方程，通过引入拉曼增益的洛伦兹模型，研究了增益谱随相关参量的变化关系。结果表明，增益谱只与三阶色散项的大小及四阶色散项有关；在正常色散区sgn（β4）=1的较大输入功率区域，T频率斯托克斯波增益谱呈现单一峰值。所以，利用色散位移光纤，可提取单-T频率脉冲。

英文摘要：

The coherently coupled nonlinear Schr6dinger （NLS） equation in which Parametric Amplification and Raman scattering together acting has been utilized in high birefringence Dispersion Shifted fiber. The gain spectrums have been studied under Raman scattering and parametric amplification together acting when the pump wave polarization is oriented at 45~ between the axes by quoting Lorentzian model of Raman gain spectra in high birefringence Dispersion Shifted fiber. The result shows that the gain spectrums only has relationship with magnitude of third-order dispersion and fourth-order dispersion. The Stokes Gain has displayed single pulse when biggish input power in the normal dispersion regime. So that the T frequency single pulses can been extracted when high birefringence Dispersion Shifted fiber has been used.