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低交叉通道孔沟辅助多核光纤支持500多个OAM模式
Optics express
|July 30, 2025
概括
我们开发了一种新的洞沟辅助多核光纤 (HTA-MCF) 设计,用于宽带轨道角动量 (OAM) 模式传输. 这种光纤实现了超低的交叉声,使高容量的光通信系统成为可能.
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.
- 波导工程 波导工程
背景情况:
- 多核光纤 (MCF) 对于增加光通信能力至关重要.
- 在支持轨道角动量 (OAM) 模式的MCF中实现低交叉是具有挑战性的.
- 沟辅助设计为MCF中的模式隔离提供了潜力.
研究的目的:
- 为洞沟辅助多核纤维 (HTA-MCF) 提出一个新的设计策略.
- 为了使大量轨道角动量 (OAM) 模式的宽带传输能够在最小的交叉声中进行.
- 从理论上分析和验证拟议的HTA-MCF结构的性能.
主要方法:
- 使用有限元法 (FEM) 进行理论分析.
- 在拟议的HTA-MCF中模拟了OAM模式的传播特性.
- 研究了环间交声,模式容量,限制损失和非线性效应.
主要成果:
- HTA-MCF支持1.55微米的574种OAM模式和O-E-S-C-L频段的518种模式.
- 在1.55μm时显示的异常低的环间交叉声低于-208.34dB,在100km时低于-83dB.
- 实现高模式纯度 (>99%),低封闭损失 (10-12到10-8dB/m),以及对圆性和曲的高耐受性.
结论:
- 拟议的HTA-MCF设计有效地减少交叉通话,同时支持大量的OAM模式.
- 纤维显示出出色的性能指标,包括低损耗和高模式质量.
- 这种HTA-MCF为未来基于OAM的高容量光通信系统提供了一个有希望的解决方案.
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