Properties of the enhanced nonlinearity in photonic crystal fiber (PCF) with a GeO2-doped core are investigated theoretically by using all-vector finite element method.

• 采用全矢量有限单元方法，本文理论计算和分析了掺杂前后光子晶体光纤的非线性特性。通过对比发现，后者的非线性系数得到了大幅提高；