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Design of 20-polarization-maintaining-mode 'pseudo-rectangle' elliptical-core fiber for MIMO-less MDM networks

机译:用于无MIMO的MDM网络的20偏振保持模式“伪矩形”椭圆纤芯设计

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摘要

We propose a polarization-maintaining few-mode fiber, which is characterized by the combination of an elliptical core structure and two stress-applying areas. Numerical simulations indicate that such fiber could support 20 distinct polarization-maintaining modes. The influences of elliptical-core size and stress-applying-area position are investigated for the 20 spatial modes. Moreover, the stress distribution, the modal birefringence distribution and the bending loss for the 20 polarization-maintaining modes of the designed fiber are also calculated. With appropriate geometrical parameters, the minimum effective refractive index difference (min Delta n(eff)) between adjacent modes is 2.01 x 10(-4) at C band. The proposed fiber is a promising candidate to simplify or eliminate multiple-input-multiple-output digital-signal-processing in mode-division multiplexing networks.
机译:我们提出了一种保偏的少模光纤,其特征在于椭圆形纤芯结构和两个应力施加区域的组合。数值模拟表明,这种光纤可以支持20种不同的偏振保持模式。研究了20种空间模式下椭圆核尺寸和应力施加区域位置的影响。此外,还计算了设计光纤的20种保偏模式的应力分布,模态双折射分布和弯曲损耗。使用适当的几何参数,在C波段相邻模式之间的最小有效折射率差(最小Delta n(eff))为2.01 x 10(-4)。提出的光纤是简化或消除模式分割多路复用网络中多输入多输出数字信号处理的有前途的候选者。

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