Intermodal Four-Wave Mixing and Parametric Amplification in Kilometer-Long Multimode Fibers
Intermodal Four-Wave Mixing and Parametric Amplification in Kilometer-Long Multimode Fibers
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DOI：
10.1109/jlt.2017.2767103
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发表时间：
2017-05
影响因子：
4.7
通讯作者：
M. Guasoni;F. Parmigiani;P. Horák;J. Fatome;D. Richardson
中科院分区：
文献类型：
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作者：
M. Guasoni;F. Parmigiani;P. Horák;J. Fatome;D. Richardson
我们从理论和数值上研究了超长光纤中的模间四波混频，其中沿光纤长度存在沿着的随机双折射波动。我们确定了几个不同的制度，取决于随机波动的长度尺度和相互作用的准简并模式的拍长之间的相对大小。此外，我们分析了模式色散的影响，我们证明，随机变化的核心半径，这是通常遇到的光纤的绘制阶段，可以代表带宽损害的主要来源。这些结果设定了一个边界上的经典Manakov模型的有效性的限制，并可能是有用的多模参量放大器和波长转换器的设计，以及在长距离空分复用传输的非线性损伤的分析。
We theoretically and numerically investigate intermodal four-wave mixing in kilometer-long fibers, where random birefringence fluctuations are present along the fiber length. We identify several distinct regimes that depend on the relative magnitude between the length scale of the random fluctuations and the beat lengths of the interacting quasi-degenerate modes. In addition, we analyze the impact of mode dispersion and we demonstrate that random variations of the core radius, which are typically encountered during the drawing stage of the fiber, can represent the major source of bandwidth impairment. These results set a boundary on the limits of validity of the classical Manakov model and may be useful for the design of multimode parametric amplifiers and wavelength converters, as well as for the analysis of nonlinear impairments in long-haul spatial division multiplexed transmission.