相关实验视频
Updated: Sep 11, 2025

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Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
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概括
这项研究展示了一种200Gb/s的双向时间和频率分割复杂化被动光网络 (TFDM-PON) 使用数字子载波复杂化 (DSCM). 该系统在20公里的标准单模光纤上实现了29dB的功率预算,用于上游和下游传输.
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
- 光子学 是一个光子学.
背景情况:
- 在光纤网络中对更高带宽的日益增长的需求需要先进的PON技术.
- 传统的强度调制和直接检测 (IM-DD) 方法面临比特率和功率预算的限制.
- 一致的技术为克服这些局限性提供了一个有希望的解决方案.
研究的目的:
- 演示一个200Gb/s双向的时间和频率分割复杂化被动光学网络 (TFDM-PON).
- 在PON系统中探索数字子载波复杂化 (DSCM) 技术的应用.
- 为了实现高数据速率和灵活的上游传输与一个重要的电力预算.
主要方法:
- 在光网络单元 (ONU) 中使用单个分布式反激光器 (DFB),用于本地振荡 (LO) 和上游信号传输.
- 在下游信号中采用50Gbaud阿拉穆蒂编码的16次方格振幅调制 (QAM).
- 实现了一个35Gbaud单侧带 (SSB) 单极化 (SP) 64QAM用于上游信号.
主要成果:
- 使用TFDM-PON与DSCM实现了双向200Gb/s传输.
- 使用SP-4/16/64QAM调制,证明了混合和灵活的上游速率从大约50到200 Gb/s.
- 在20公里的标准单模光纤 (SSMF) 链路上实现了29dB的功率预算,用于下游和上游200G传输.
结论:
- 开发的TFDM-PON系统有效地克服了传统IM-DD方法的局限性.
- 连贯技术与DSCM相结合,可以在下一代接入网络中实现高容量和灵活的数据传输.
- 该系统的强大性能和显著的电力预算使其适合未来的高带宽光学接入网络.
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