Comparison of Nonlinear Impairments in Graded-Index and Trench- Assisted Graded-Index Fibers for SDM Transmissions
Comparison of Nonlinear Impairments in Graded-Index and Trench- Assisted Graded-Index Fibers for SDM Transmissions
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用于 SDM 传输的渐变折射率光纤和沟槽辅助渐变折射率光纤的非线性损伤比较
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
P. Krummrich
中科院分区：
文献类型：
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作者：
Marius Brehler;P. Krummrich
沟槽辅助渐变折射率光纤中的附加沟槽减小了多模光纤中的有效面积并影响了空间重叠。我们调查以何种方式增加的非线性耦合系数导致额外的惩罚。我们的研究结果表明，一个潜在的惩罚可以忽略不计，沟槽可以充分利用，以优化线性光纤的性能，而不会产生不利影响的模式重叠。
The additional trench in trench-assisted graded-index fibers reduces the effective areas and influences the spatial overlap in multimode fibers. We investigate in which way the increased nonlinear coupling coefficients lead to an additional penalty. Our results indicate that a potential penalty can be neglected and that the trench can be fully utilized to optimize the linear fiber properties without adversely affecting the modal overlaps.