基于频率试点音调的一次性预等级方案,用于带宽有限的IM/DD DCI传输
Optics letters
|December 13, 2024
概括
一种新的基于频率试点音 (FPT) 的预等式化方法有效地克服了数据中心互连 (DCI) 的O频强度调制和直接检测 (IM/DD) 系统中的带宽限制. 这种方法比传统方法显著提高了性能.
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
- 信号处理 信号处理
背景情况:
- 在高速数据中心互连 (DCI) 中,O频段强度调制和直接检测 (IM/DD) 是至关重要的.
- 与SOA相比,石添加纤维放大器 (BDFAs) 具有优势,但系统带宽限制仍然是一个关键的瓶.
- 现有的预等值方法很难解决带宽限制导致的高频色问题.
研究的目的:
- 提出并展示一种高效的预等值 (pre-Eq) 方法,以弥补O频段DCI系统中的带宽限制.
- 使用频率试点音调 (FPT) 进行精确的大小和相应响应的表征.
- 为了验证基于FPT的pre-Eq对传统算法的有效性.
主要方法:
- 开发一种使用频率试点音调 (FPT) 的新型预等值技术.
- 系统大小和相位响应的一次性表征.
- 通过40公里的标准单模光纤 (SSMF) 进行100GBaud PAM-4信号传输的实验演示,带宽限制为30GHz.
- 与基于恒定模量算法 (CMA) 的预等值进行比较.
主要成果:
- 基于FPT的pre-Eq方法有效地弥补了高频色.
- 在显著的带宽限制下,在40公里的SSMF上成功传输了100GBaud的PAM-4信号.
- 拟议的基于FPT的pre-Eq,与基于CMA的pre-Eq相比,显示出更高的性能.
结论:
- 基于FPT的pre-Eq是克服高速O频段DCI系统中带宽限制的高效解决方案.
- 这种方法为光学数据传输提供了显著的性能改进.
- 该技术为数据中心的更高数据速率提供了可行的途径.
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