概括
这项研究介绍了一种内源分布式声学传感 (DAS) 系统,用于光纤网络监控,该系统使用重新设计的分数里埃变换 (FrFT) 训练序列 (TS). 该方法实现了高灵敏度的振动传感以及100Gb/s通信,而不会损失光谱效率.
科学领域:
- 光学通信是指光学通信的应用.
- 传感技术 传感技术
- 信号处理 信号处理
背景情况:
- 光纤网络需要在密集的城市地区进行持续的健康监测.
- 现有的集成通信和传感系统通常需要专门的传感探头.
- 精确的时间和频率同步对于连贯的数字子载波复杂化 (DSCM) 系统至关重要.
研究的目的:
- 在DSCM框架内提出和演示一种内源分布式声学传感 (DAS) 系统.
- 为了重新利用分数里叶变换 (FrFT) 训练序列 (TS) 进行同时通信和传感.
- 为了实现强大的光纤网络监控,而不会影响通信性能.
主要方法:
- 在100Gb/s的16-QAM DSCM系统中利用基于FrFT的TS实现内源DAS系统.
- 利用FrFT-TS进行时间/频率同步和分布式振动传感.
- 对FrFT-TS的双重功能进行实验验证.
主要成果:
- 在100Gb/s16-QAM DSCM传输和DAS.成功同时运行.
- 在5米的空间分辨率下,达到了70 pε/√Hz的DAS灵敏度.
- 通信信号的光谱效率没有损失.
结论:
- 基于FrFT的TS可以有效地用于内源DAS,从而实现同时通信和传感.
- 这种方法为监控光纤网络健康提供了具有成本效益和效率的解决方案.
- 拟议的方法增强了环境传感应用的现有通信系统的功能.
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