Copper cabling has been the workhorse for moving data inside of AI and HPC data centers, but fiber is nipping at its heels.
Optics brings three possible bandwidth multipliers — wavelength-division multiplexing (WDM), the use of different modes, and polarization. Each has a role in longer-distance optical links, but the tradeoffs are different in the data center. WDM appears poised to boost...
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