Abstract
Vertical-cavity surface-emitting laser (VCSEL) and multimode fiber (MMF) links are currently dominating the short-reach optical interconnects in datacenters and high-performance computing systems1. At the standard wavelength of 850 nm, reach requirements in large-scale datacenters, which exceed 1 km, cannot be met due to the high MMF attenuation and chromatic dispersion. Moving to a longer wavelength, such as 1060 nm to which the wavelength of GaAs-based VCSELs can be extended without comprising reliability2 and where attenuation and chromatic dispersion are much reduced in comparison with 850 nm3, allows for significant reach extension4. Here we present the design and performance of recently developed 1060 nm single and multimode VCSELs and results from preliminary transmission experiments using a 1060 nm optimized MMF.
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