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Nvidia showcases OOI and 256 Gb/s DWDM optical research

AI summary

Nvidia showcased two research-stage optical-interconnect technologies at SEMICON West 2026, according to a report republished by 创业邦. Optics-on-Interposer places the optical engine on the silicon interposer to shorten electrical paths, while an eight-wavelength DWDM demonstration transmitted 256 Gb/s over one fiber using eight 32 Gb/s data channels. Nvidia has not disclosed product adoption, commercialization schedules, measured power improvements, or bandwidth-density data.

In-depth insight

The demonstrations provide concrete research directions for increasing bandwidth density in AI-cluster interconnects, while remaining uncommitted to specific products or timelines.

编者按:本文来自微信公众号 “半导体行业观察”(ID:icbank),作者:编辑部,创业邦经授权转载。

在CPO(共封装光学)这条技术路线上,英伟达显然还不满足于现有方案。在SEMICON West 2026上,英伟达展示了两项面向下一代AI系统互连的光互连研究成果:一项是将光引擎从传统封装基板移至硅中介层上的Optics-on-Interposer(OOI),另一项则是采用密集波分复用(DWDM)技术,实现单根光纤256Gb/s的数据传输。

这两项技术分别瞄准光互连链路的不同环节。OOI希望进一步缩短芯片与光引擎之间的电信号传输距离,而DWDM则试图在不增加光纤数量的情况下,提高单根光纤的传输容量。

从技术方向来看,英伟达正在尝试把光互连做得更靠近计算芯片,同时进一步提高光纤侧的带宽密度。这也勾勒出其下一代CPO技术可能的发展方向。

需要说明的是,目前OOI和DWDM仍处于研究阶段,英伟达尚未公布具体产品导入计划及商业化时间表。

#Nvidia#Optics-on-Interposer#DWDM#Spectrum-X Ethernet Photonics

Original · 7 min readRead the original
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