OFC 2018 – 400G Inside the Datacenter

When the conversation at OFC turned to short reach client optics, faster speeds were the central focus.  Several companies announced products and gave demonstrations of 400G capable technology. The 100G speeds and production ramp that had been such a hot topic at OFC 2017 had little follow-on during 2018.
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MultiPhy pivots to PAM-4 silicon, takes Semtech investment

Everyone is getting aboard the PAM-4 train.

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MultiPhy’s efforts with non-coherent 100G 4×28 solutions for metro interconnect met with limited success. Finisar was first to market with this approach, and their largest customer ADVA sold it with great success. But the volumes for this approach so far are dwarfed by shipments of coherent solutions.

Like InPhi, which has already invested heavily, MultiPhy will target the much larger volumes of the 2km datacenter market first then look to stretch the capabilities of PAM-4 to attack the 100G metro access market.