[LINK] terrabit per second internet
dlochrin at d2.net.au
Wed Sep 9 12:15:35 AEST 2009
On Wednesday 09 September 2009 11:41, Richard Chirgwin wrote:
> As you say, you'll need ten fibres (for example) to run a terabit Sy-Me;
> but the passives that CUDOS is working on (not only them, there are
> plenty of other researchers in this particular game) would, for eg,
> split / combine the terabit "trunk" across the multiple bits of glass
> without electrical conversion.
Interesting, however I wonder whether splitting & combining data streams is worth the effort? The complexity and cost of splitting & combining would be high at the speeds involved, and what would it achieve? There's probably no single type of data stream which requires a data rate faster than can be provided by one fibre, so the best cost/benefit might be obtained by using multiple fibres to provide asynchronous capacity for independent bit streams.
I don't know if this actually occurs, by I imagine small changes in the group velocity of photon bundles in individual fibres, perhaps due to mechanical or temperature stresses, could play havoc with splitting & combining at those data rates.
Or is this too naive?
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