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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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