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在对W型阶跃双包层手性光纤进行解析求解的基础上,对几个低阶导模的功率特性进行了仔细的研究.对典型的内包层厚度,计算了几个低阶模留在纤芯中的光功率随纤芯和内外包层的手性参数的变化关系曲线,讨论了纤芯和内外包层的手性参量以及内包层厚度对不同符号模式的功率特性的影响.内包层厚度越大,功率越被限制在纤芯中.随着纤芯中手性参量的增大, HE-11模和HE-21模( HE01模)限制在纤芯中的光功率缓慢增加,而HE11模和HE21模( HE02模)限制在纤芯中的光功率则逐渐减小.包层手性参量的作用正好与此相反.
Based on the analytical solution of the W-type double-clad chiral optical fiber, the power characteristics of several low-order guided modes are studied carefully. For the typical inner cladding thickness, several low-order modes The optical power in the core varies with the chiral parameters of the core and the inner and outer cladding. The effects of the chiral parameters of the core and inner and outer cladding and the inner cladding thickness on the power characteristics of different symbol modes are discussed. The greater the layer thickness, the more power is confined in the core.As the HE-11 mode and the HE-21 mode (HE01 mode) increase the chiral power in the core, the optical power in the core is slowly increased, The optical power confined by the HE11 mode and the HE21 mode (HE02 mode) in the core decreases gradually, and the effect of the cladding chiral parameter is exactly the opposite.