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具有沟和弱合的少数模式合纤维,用于基于分层合技术的模式增益均等

Qi Zhao, Jianjun Tang, Yuheng Xie

|September 14, 2023

概括

本研究介绍了一种设计用于放大器 (FM-EDFA) 中模态增益均等的少数模态辅助纤维 (FM-EDF). 分层兴奋剂显著减少了改进的光通信系统的模式增强差异.

科学领域:

光纤通讯是指光纤通讯的一种方式.
光子学是一个光子学.
材料科学材料科学材料科学

背景情况:

少数模式光纤放大器 (FM-EDFA) 对于增加光通信容量至关重要.
在FM-EDFA中实现模式收益均等是实际实施的关键挑战.
现有的FM-EDF设计经常与显著的模式增强差异 (DMG) 斗争.

研究的目的:

设计和提出一种新的少数模式的胺纤维结构 (FM-EDF).
为了实现模态增益均等在几个模式的埃尔比亚吸附光纤放大器 (FM-EDFA).
为了最大限度地减少C频段的模式增强差异 (DMG).

主要方法:

设计一个具有阶段折射率和沟结构的FM-EDF.
采用分层兴奋剂技术来精确控制兴奋剂概况.
优化兴奋剂半径和度以尽量减少DMG.
分析模式之间的折射率差异,以减少模式间合.

主要成果:

设计的FM-EDF在FM-EDFA中在C频段实现了不到0.15dB的DMG.
在1550nm时观察到的DMG小于0.12dB.
模式之间的最小有效折射率差异计算为1.35×10−3.3.
该设计在制造容忍度上表现出强度,在±15%的兴奋剂变化下,最大的DMG增加到1.8dB.

结论:

拟议的FM-EDF结构有效地实现了FM-EDFA的模式收益均等.
层级兴奋剂方法对于最小化DMG至关重要.
低端联接和强大的性能使该设计适合光通信系统.

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