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Entries in spatial division multiplexing (3)

Saturday
Apr202024

How scaling optical networks is soon to change

Carrier division multiplexing and spatial division multiplexing (CSDM) are both needed, argues Lumentum’s Brian Smith.

The era of coherent-based optical transmission as is implemented today is coming to an end, argues Lumentum in a White Paper. 

Brian Smith

The author of the paper, Brian Smith, product and technology strategy, CTO Office at Lumentum, says two factors account for the looming change.

One is Shannon’s limit that defines how much information can be sent across a communications channel, in this case an optical fibre.

The second, less discussed regarding coherent-based optical transport, is how Moore’s law is slowing down.

”Both are happening coincidentally,” says Smith. “We believe what that means is that we, as an industry, are going to have to change how we scale capacity.”

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Wednesday
Mar062013

OFC/NFOEC 2013: Technical paper highlights

Source: The Optical Society

Network evolution strategies, state-of-the-art optical deployments, next-generation PON and data centre interconnect are just some of the technical paper highlights of the upcoming OFC/NFOEC conference and exhibition, to be held in Anaheim, California from March 17-21, 2013. Here is a selection of the papers.

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Friday
Feb012013

Achieving 56 Gigabit VCSELs

A Q&A with Finisar's Jim Tatum, director of new product development. Tatum talks about the merits of the vertical-cavity surface-emitting laser (VCSEL) and the challenges to get VCSELs to work at 56 Gigabit.

Briefing: VCSELs


VCSELs galore! A wafer of 28 Gig devices Source: Finisar

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