基于主模复用MMF链路的二阶模态色散反馈补偿

2022 National Conference on Communications (NCC) Pub Date : 2022-05-24 DOI:10.1109/NCC55593.2022.9806739

Komal Ojha, K. Appaiah

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引用次数: 0

摘要

使用多模光纤的主模式(pm)进行多路复用是已知的，可以有效地提高信道变化的数据速率，这些变化在调制带宽$\Omega$中高达一阶。然而，对于较大的$\Omega$，二阶群延迟项(依赖于$\Omega^{2}$)会降低pm的有效性。在本文中，我们证明了同时反馈的pm和二阶群延迟矩阵允许克服高阶模态色散的传输。此外，使用基于流形的pm量化可以最大限度地减少反馈开销。仿真结果表明，该方法可以有效地消除模态色散，并且只需要很少的额外反馈开销。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Feedback based Compensation of Second Order Modal Dispersion in Principal Mode based Multiplexed MMF Links

Multiplexing using principal modes (PMs) of mul-timode fibers is known to be effective at enhancing data rates for channel variations that are up to first order in modulation bandwidth $\Omega$. However, for large $\Omega$, the second order group delay terms (dependent on $\Omega^{2}$) diminish the effectiveness of PMs. In this paper, we show that simultaneously feeding back PMs as well as second order group delay matrices permits transmission that overcomes the higher order modal dispersion. In addition, using manifold based quantization of PMs minimizes feedback overheads. Simulations reveal that modal dispersion is effectively eliminated with very little additional feedback overhead.

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2022 National Conference on Communications (NCC)

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