概括
我们开发了一种新的双向时间和频率划分多重复合 (TFDM) 连贯的被动光学网络 (PON),支持200 Gb/s. 这种先进的光学网络为未来的接入网络提供高灵敏度和频谱效率.
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:
- 时间和频率分割复合 (TFDM) 连贯的被动光学网络 (PON) 对于下一代光学接入网络至关重要.
- 现有的TFDM PON需要提高灵敏度,频谱效率和灵活性,以提高性能.
- 数字子载波多重复合 (DSCM) 技术为光学网络中先进的多重复合方案提供了潜力.
研究的目的:
- 提出并实验证明一种新的双向TFDM200-Gb/s连贯PON架构.
- 在光学网络单元 (ONU) 侧实现极化不敏感的简化连贯接收器.
- 评估拟议架构在标准单模光纤上的性能和功率预算.
主要方法:
- 实现一个双向的TFDM连贯的PON架构,使用数字子载波复杂化 (DSCM).
- 在联合国使用阿拉穆蒂编码和异极检测用于极化不敏感的接收器.
- 实验传输下游的50Gbaud阿拉木图16倍幅度调制 (QAM) 信号和上游的25Gbaud双极化16-QAM信号.
- 使用单侧波段调制发射器,在ONU上只需要一个激光源.
主要成果:
- 成功的实验演示了拟议的双向200Gb/s连贯PON.
- 在20公里标准单模光纤传输后,实现了30dB (下游) 和33dB (上游) 的功率预算.
- 证明了简化,极化不敏感的连贯接收器的可行性.
结论:
- 拟议的基于DSCM的双向TFDM连贯PON架构是未来光接入网络的可行和有前途的解决方案.
- 该系统实现了显著的电力预算,并且在标准光纤上表现出强大的性能.
- 使用Alamouti编码和异质基检测简化了ONU接收器,同时保持了性能.
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