数据中心IM/DD系统的多阶段索引光纤与大量弱合的OAM模式组:设计,制造和表征
Optics letters
|November 15, 2023
概括
我们开发了一种新型的多步指数少数模式光纤 (FMF) 用于模式分割复杂化 (MDM). 这种光纤支持轨道角动量 (OAM) 模式,使短距离光通信具有更高的容量.
科学领域:
- 光学通信是指光学通信.
- 光纤光学是指光纤的使用.
- 光子学 是一个光子学.
背景情况:
- 模式分割复杂化 (MDM) 对于增加光学传输能力至关重要.
- 少数模式纤维 (FMF) 是实现MDM的重要组成部分.
- 弱合的FMF对于短距离的应用特别有前途.
研究的目的:
- 设计和制造一个新的多步指数FMF (MSIF).
- 为了支持用于MDM传输的弱合的第一阶段辐射轨道角动量模式组 (OAMl,1 MG).
- 为了调节OAM模式组之间的有效折射率差异.
主要方法:
- 制造一个具有三个核心层的多步指数FMF.
- 使用干扰度测量对支持的OAM模式进行表征.
- 使用光学时域反射计 (OTDR) 测量损失.
- 通过功率分析测量模式间组交叉声 (XT).
主要成果:
- 该MSIF成功支持轨道角动量模式,最高可达OAM6,1.
- 对OAMl,1模式的测量光纤损耗低于0.5dB/km (我们认为是0到6).
- 在20公里传输后,系统级交叉声响在最坏的情况下大约为-11.1dB.
结论:
- 开发的MSIF是短距离光学传输中MDM的可行解决方案.
- 纤维显示低损耗和可接受的交叉声响,支持多个OAM模式.
- 这项技术有可能提高未来的通信网络能力.
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