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宽带ASE源启用自主同质的DA-RoF前程运输,使用级联SOA和多核光纤
Optics letters
|March 1, 2024
概括
这项研究引入了一种新的数字模拟无线电-光纤移动前程架构,使用放大自发发射 (ASE) 光源. 该系统显著提高了成本敏感的电信网络的信号噪声比和数据容量.
科学领域:
- 光学通信是指光学通信.
- 电信工程 电信工程 电信工程
- 信号处理 信号处理
背景情况:
- 宽带放大自发发射 (ASE) 光源提供成本效益高的信号生成,但存在高噪声和严格的时间延迟匹配要求.
- 这些局限性阻碍了它们在连贯的光学电信系统中被采用,特别是在移动前线运输应用中.
- 现有的解决方案往往涉及复杂和昂贵的组件,增加整体系统成本.
研究的目的:
- 提出和演示一种新的数字模拟无线电-光纤 (DA-RoF) 移动前程架构.
- 通过减轻它们固有的噪音并实现高效的信号传输,利用低成本的宽带ASE源.
- 为了提高信号噪声比 (SNR) 和数据容量,为成本敏感的前航系统.
主要方法:
- 使用半导体光学放大器 (SOA) 和多核光纤实现DA-RoF移动前程架构.
- 使用SOA来抑制ASE载体的强度噪声.
- 通过8核,1公里多核光纤的单独核心传输DA-RoF信号和未调节的载波器,以进行自我同质检测.
主要成果:
- 取得了 19.4 dB 的显著 SNR 提升.
- 证明了总带宽为35GHz (7核 × 5GHz).
- 支持2.05 Tb/s的CPRI等价数据速率,使用1024-ary正方形幅度调制 (1024-QAM) 信号.
结论:
- 拟议的架构有效地将低成本的宽带ASE源集成到成本敏感的前程系统中.
- 该系统为高容量和高可靠性移动前线运输提供了一个务实的解决方案,适合大规模部署场景.
- 进一步分析了色谱分散对宽带源连贯检测系统SNR的影响.
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