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optical network switchIEEE Spectrum
•Technology
Technology
85% Informative
Nvidia announces optical network switch designed to drastically cut power consumption of AI data centers.
Co-packaged optics is an effort to boost bandwidth and reduce power consumption by moving the optical/electrical data conversion as close as possible to the switch chip.
Nvidia: Pluggable optics consume “a staggering 10 percent of the total GPU compute power” in an AI data center.
Nvidia plans two classes of switch, Spectrum-X and Quantum-X.
Micas Networks is already in production with a switch based on Broadcom ’s CPO technology.
Broadcom chose the more established Mach-Zehnder modulators for its Bailly CPO switch, in part because it is a more standardized technology.
Other materials, such as lithium niobate and indium phosphide, should be able to integrate them with silicon components.
In the meantime, pluggable optics are not standing still.
Broadcom unveiled a new digital signal processor that could lead to a more than 20 percent power reduction for 1.6 Tb/s transceivers.
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