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Old September 30th 18, 06:02 PM posted to uk.telecom.broadband
7[_2_]
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Posts: 509
Default Openroach turbo master baiting too busy to install fiber


Interesting - 10Gbps fibre modems are as opposed to for 1Gbps.

I have no data on that.


I looked it up. 7 seems to have prices for 1k off.


Can they use a diffraction grating to extract multiple beams from the
same fibre?


It's possible. Whether it's cost effective is another matter.


A diffraction grating costs pence, however setting it up accurately would
be difficult.

It may be that all the fibre modems are using the same colour anyway.


They don't need to be colour sensitive. However this solution has
problems in the uplink direction - splitting a beam in the field is
probably pretty simple - it could be done in a passive module. Merging
them again is very difficult, so the uplink would either be lower
bandwidth or by other means (copper).


As 7 sort of points out this is a frequency division multiplex. It might
be easier to statistically multiplex 'bundles' of data for the same switch
at the exchange and distribute these to high speed switches at the cabinet
- these would unbundle for 10Gbps switches to say 100 users or
alternatively just lay 8 core fibre (as at present AIUI).


That is because you are an Internet troll and have no idea which is cheaper
if any.
None of those are cheap because the cost of buffering 1 second of data
with high speed RAM for multiplexing is enormous.
Better to have direct symmetric gbit Internet without buffering
than buggering up everyone with multiplexing of any kind for FTTP.


The idea of laying 3456 fibre cables to cabinets that where I am serve at
most a few hundred premises is clearly ridiculous.



That is because you are an internet troll and don't know what you want.
Its about $1 per 50 meter per individual fiber cost. So if you got 10,000
people in blocks of flats to connect up, you need 3 of these cables
instead of hundreds of cables because it saves a lot of space, time
and money bringing fiber to an area because nothing else can compete
with it.


In any event it is the cost and difficulty of getting the fibres to the
premises that is the obstacle. Even if you put them in 10cm deep
micro-trenches they will still get severed every time any other utility
has to dig up.


Probably openroach and others have this habit of knocking out
competitor cables. Others use a map and take out insurance
to prove they ain't stupid.