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12.1兆比特/秒的数据中心互连使用O频段连贯传输与QD-MLL频率
Santiago Bernal1, Mario Dumont2, Essam Berikaa3
1Department of Electrical and Computer Engineering, McGill University, Montreal, QC, H3A 0G4, Canada. Santiago.Bernal@mail.mcgill.ca.
Nature communications
|September 4, 2024
概括
本研究介绍了一种使用量子点模式锁定激光器 (QD-MLLs) 进行数据中心互连的O频段连贯光学系统. 该系统在10公里内实现12.1 Tbps,提供了一个可扩展和具有成本效益的解决方案.
科学领域:
- 光学通信是指光学通信的应用.
- 数据中心相互连接数据中心相互连接
- 量子点激光器中的量子点激光器.
背景情况:
- 目前的数据中心互连 (DCI) 主要使用强度调制直接检测 (IMDD) 由于简单性和成本.
- 然而,IMDD面临着扩展的局限性,使得连贯的解决方案可用于短距离应用.
研究的目的:
- 提出使用量子点模式锁定激光器 (QD-MLLs) 的O波段连贯光纤传输系统.
- 探索连贯技术的潜力,以提高数据中心互连能力,降低电力消耗,复杂性和成本.
主要方法:
- 实现一个 comb-to-comb 配置,其中有两个独立的自由运行的 QD-MLL,用于载波器和局部振荡器 (LO).
- 在O频段进行10公里单模光纤传输的演示.
- 使用 26 条线, 56 GBaud 符号速率和 32 个正方形振幅调制 (QAM).
主要成果:
- 实现了总系统容量12.1 Tbps,光谱效率为0.47 Tbps/λ.
- 证明了一个在O频段运行的异质连贯系统.
- 通过设计,分析和实验,为特定的用例量化最佳线距离.
结论:
- 开发的O频段连贯系统为数据中心互连提供了IMDD的有希望的替代方案.
- 与现有的C频段系统相比,该系统显示出更高的容量和光谱效率,使用更少的线和更高的调制格式.
- 该研究提供了对未来高容量,低功耗和具有成本效益的数据中心互连解决方案的优化配置的见解.
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