Paul Brooks pbrooks-link at layer10.com.au
Tue Apr 7 23:09:25 AEST 2009

George Bray wrote:
> So what *are* the capacity/distance properties of today's FTTP fibre
> systems?  Paul? Richard?
For *tomorrows* FTTP systems, there is labwork being done on WDM-PON - 
where the fibre is still split 32 ways up to 64 ways in the middle of 
the physical cable network, however in some implementations every 
endpoint gets a dedicated wavelength, with the 32 or 64 wavelengths 
being sent from the head-end.

This effectively takes out all the sharing aspects - every customer gets 
a dedicated gigabit or even 10Gig optical path direct from the head-end 
to their premise! (drool).

Now try to imagine the backhaul required to service the head-end if 
5000-10000 users are hanging off the head-end with 10Gig dedicated links 
each ;-)


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