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通过向折射率引导型光子晶体光纤的空气孔中填充可调的高折射率的材料可以获得带隙可调的光子带隙光纤.本文采用矢量平面波展开法与矢量有限元法对可调光子带隙光纤的泄漏损耗特性进行了理论研究.研究表明,这种可调光子带隙光纤的光子带隙效应使其泄漏损耗与填充材料的折射率有很强的依赖关系,同时给出了光子带隙光纤的泄漏损耗和群速度色散与归一化波长的关系.
The photonic bandgap fiber with adjustable bandgap can be obtained by filling the air hole of the refractive index guided photonic crystal fiber with adjustable high refractive index material.In this paper, by using vectorial plane wave expansion method and vector finite element method, Band gap fiber has been studied theoretically.The results show that the photonic bandgap effect of this tunable photonic band gap fiber has a strong dependence on the leakage loss and the refractive index of the filler material, Relationship between Leakage Loss and Group Velocity Dispersion and Normalized Wavelength of Photonic Band Gap Fiber.