广泛的温度范围高速VCSEL互连使用FEC和预强调
Optics express
|November 11, 2025
概括
使用垂直腔表面发射激光器 (VCSEL) 的高速光学互连实现了在广泛的温度范围内可靠的数据传输. 先进的信号处理技术为PAM-4调制提供了高达70 Gb/s的强大性能.
科学领域:
- 光电学和光子学的光学电子和光子学.
- 光学通信工程 光学通信工程
背景情况:
- 高速光学互连对于数据中心和高性能计算至关重要.
- 垂直腔表面发射激光器 (VCSEL) 是这些互联网的关键组件,因为它们的成本低和集成能力.
- 在极端温度下可靠地运行基于VCSEL的互连是一个重大挑战.
研究的目的:
- 用PAM-2和PAM-4调制评估基于850nmVCSEL的光学互连的性能.
- 评估这些相互连接的运行温度范围从-60°C到140°C.
- 证明信号处理技术在维持高数据速率方面的有效性.
主要方法:
- 使用了两个不同的多个量子井VCSEL设计.
- 实现了先进的信号处理:前向错误校正 (FEC),电子预强调和接收端等级.
- 采用三点进料前均等器在前强调和最小平均平方均等器在接收器.
主要成果:
- 在 -60°C至100°C的温度范围内以70 Gb/s的速度成功实现了PAM-4传输.
- 在125°C显示50 Gb/s PAM-4传输,在140°C显示42 Gb/s传输.
- FEC的开销一直保持在低的3.1%.
结论:
- 基于VCSEL的850nm光学互连与PAM-4调制在扩展的温度范围 (-60°C至140°C) 上表现出强大的性能.
- 信号处理技术,包括FEC和均等,在克服温度引起的损害方面是有效的.
- 这些发现支持VCSEL在高速,高温光学互连应用中的可行性.
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