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利用镁离子内扩散方法,实现了铌酸锂单晶光纤具有阶跃折射率剖面的芯-包层波导结构,并给出了这一晶纤的特征方程和截止条件,讨论了模的一些传输特性。
The core-cladding waveguide structure with step refractive index profile of lithium niobate single crystal fiber is realized by the diffusion method of magnesium ions. The characteristic equation and the cut-off condition of this crystal fiber are given. Some transmission modes characteristic.