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首页> 外文期刊>Optik: Zeitschrift fur Licht- und Elektronenoptik: = Journal for Light-and Electronoptic >Low eccentricity elliptical fibers with helical windings under slow-wave consideration - Some special cases
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Low eccentricity elliptical fibers with helical windings under slow-wave consideration - Some special cases

机译：慢波考虑下带有螺旋绕组的低偏心椭圆纤维-某些特殊情况

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摘要

Analytical investigation of the lightwave propagation through dielectric elliptical fibers with conducting helical windings on the core-clad boundary is presented under the consideration of slow-wave approximation. The analysis essentially requires the use of elliptical coordinate system. Mathieu and the modified Mathieu functions are used as the representatives of the electromagnetic fields within the structure. Field components in the different sections of the guide are presented, and the characteristic dispersion relations for the system are deduced for 0° and 90° pitch angles. The investigation reveals that the pitch angle has ultimately no effect on the dispersion relations for their selected values. The effect of core ellipse eccentricity on the dispersion characteristics is presented for two different operating wavelengths, and considering different values of the core major axis length.
机译：在考虑慢波近似的情况下，提出了对光波在介电椭圆形光纤中传播的分析研究，该椭圆形光纤在芯包层边界上具有传导性螺旋绕组。分析本质上需要使用椭圆坐标系。 Mathieu和修改后的Mathieu函数用作结构内电磁场的代表。给出了指南不同部分的场分量，并针对0°和90°俯仰角推导了系统的特征色散关系。研究表明，俯仰角对于所选值的色散关系最终没有影响。给出了两种不同工作波长下纤芯椭圆偏心率对色散特性的影响，并考虑了纤芯主轴长度的不同值。

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