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得到了全矢量有效折射率方法中归一化等效纤芯半径(p/Λ)随归一化空气孔直径(d/Λ)和归一化频率(Λ/λ)的变化关系,修正了p/Λ为固定值的不合理取法,得到了改进的全矢量有效折射率方法(IFVEIM).用IFVEIM计算的基模有效折射率和总色散等模式特性与多极法的结果和试验值相比较都具有很好的一致性,将基模有效折射率的误差减小了2—3个数量级.用IFVEIM详细地分析了光子晶体光纤的色散特性,得到了色散值、波长、孔间距、d/Λ之间的相互变化关系.
The relationship between the normalized equivalent core radius (p / Λ) and the normalized air hole diameter (d / Λ) and the normalized frequency (Λ / λ) is obtained in the full vector effective refractive index method. p / Λ is an irreducible method of fixed value, and an improved full vector effective refractive index method (IFVEIM) is obtained.It is proved by the IFVEIM that the mode characteristics of the fundamental mode effective refractive index and the total dispersion are in good agreement with those of the multipole method And the error of the effective refractive index of the fundamental mode is reduced by 2-3 orders of magnitude. The dispersion characteristics of photonic crystal fiber are analyzed in detail by IFVEIM, and the dispersion value, wavelength, hole spacing, d / Λ between the mutual change relationship.