矢量型fm - edfa的极化相关增益

IF 2.2 3区物理与天体物理 Q2 OPTICS

Optics Communications Pub Date : 2025-04-03 DOI:10.1016/j.optcom.2025.131827

Xinglu Jiang, Baojian Wu, Xinrui Jiang, Qiquan Wang, Feng Wen, Kun Qiu

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引用次数: 0

摘要

将双极化（DP）信号与模分复用（MDM）技术相结合，可以有效提高光纤通信的传输容量。MDM系统的极化相关损耗（PDL）和fm - edfa的极化相关增益（PDG）对DP信号的传输性能有很大影响。本文采用lp模式分集方法研究了fm - edfa中矢量模式的放大特性，并与强度模型进行了比较。结果表明，只有在圆对称模态抽运情况下，两种方法才能得到相同的计算结果，即在非圆对称模态抽运情况下，基于强度模型的计算不再有效。基于lp模分集方法，讨论了FM-EDFA中矢量模的横向强度分布演变、DP信号的模组合类型以及减小PDG的方法。通过优化泵浦模式及其功率比，降低了PDG和DMG。lp模式分集方法不仅适用于矢量模式放大，还可用于分析光纤传输或矢量光束放大的特性，如OAM模式。

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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Polarization-Dependent Gain of vector-mode FM-EDFAs

The transmission capacity of optical fiber communication can be effectively improved by the combination of dual-polarization (DP) signals with mode division multiplexing (MDM) technology. The polarization-dependent loss (PDL) of MDM systems and the polarization-dependent gain (PDG) of FM-EDFAs have a great influence on the transmission performance of DP signals. This paper employs the LP-mode diversity method to investigate the amplification characteristics of vector modes in FM-EDFAs, and compares it with the intensity model. It is demonstrated that the two methods may give the same calculation results only for the case of circularly symmetric mode pumping, that is, the computation based on the intensity model is no longer valid in the case of non-circularly symmetric mode pumping. Based on the LP-mode diversity method, we discuss the evolution of the transverse intensity distribution of vector modes in FM-EDFA, the mode combination types of DP signals, and the approaches to reducing PDG. PDG and DMG are reduced by optimizing both the pump modes and their power ratio. The LP-mode diversity method is not only applicable to vector mode amplification, but can also be used to analyze the characteristics in fiber transmission or amplification of vector beams, such as OAM modes.

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来源期刊

Optics Communications 物理-光学

CiteScore

5.10

自引率

8.30%

发文量

681

审稿时长

38 days

期刊介绍： Optics Communications invites original and timely contributions containing new results in various fields of optics and photonics. The journal considers theoretical and experimental research in areas ranging from the fundamental properties of light to technological applications. Topics covered include classical and quantum optics, optical physics and light-matter interactions, lasers, imaging, guided-wave optics and optical information processing. Manuscripts should offer clear evidence of novelty and significance. Papers concentrating on mathematical and computational issues, with limited connection to optics, are not suitable for publication in the Journal. Similarly, small technical advances, or papers concerned only with engineering applications or issues of materials science fall outside the journal scope.