nanog mailing list archives

Re: Muni Fiber (was: Re: last mile, regulatory incentives, etc)


From: Ray Soucy <rps () maine edu>
Date: Tue, 27 Mar 2012 09:41:26 -0400

Ignoring the fact that we haven't reached our limits with fiber yet ...

If you're talking broadband, I think it's pretty reasonable to suggest that
a fiber plant will last 20 years with minor maintenance just given the
history of how long we've used copper.

When its 2012 and you have people who are still on DSL with 768K
"broadband", it's nice to toss around the theory that technology moves fast
and that 20 years from now everyone will have Terabit to the home over
wireless, but I really don't see it.  Back in the 90s I was sure everyone
would have 100M to the home by now.

The next major speed boost for broadband will be over fiber.  And because
the bottleneck at that point becomes equipment, we'll continue to see a
healthy round of upgrades in speed over the same fiber plant.

If people got serious about FTTH, I think a _very_ optimistic timeline
would be something like:

2015 - First communities coming online, 100M to the home (probably Gigabit
line rate, but throttled).
2020 - Gigabit to the home starting to become common
2030 - Gigabit to the home "typical"
2035 - 10G to the home starting to become common
2040 - Newer optics require better fiber for back haul, minor upgrades to
middle-mile needed to push speeds.
2050 - People finally agree to invest in those upgrades after "suffering"
10 years of "only" 10G to the home.




On Mon, Mar 26, 2012 at 8:45 PM, William Herrin <bill () herrin us> wrote:

On Mon, Mar 26, 2012 at 8:04 PM, Jacob Broussard
<shadowedstrangerlists () gmail com> wrote:
Who knows what technology will be like in 5-10 years?  That's the whole
point of what he was trying to say.  Maybe wireless carriers will use
visible wavelength lasers to recievers on top of customer's houses for
all
we know.  10 years is a LONG time for tech, and anything can happen.

Hi Jacob,

The scientists doing the basic research now know. It's referred to as
the "technology pipeline." When someone says, "that's in the pipeline"
they mean that the basic science has been discovered to make something
possible and now engineers are in the process of figuring out how to
make it _viable_. The pipeline tends to be 5 to 10 years long, so
basic science researchers are making the discoveries *now* which will
be reflected in deployed technologies 10 years from now.

There is *nothing* promising in the pipeline for wireless tech that
has any real chance of leading to a wide scale replacement for fiber
optic cable. *Nothing.* Which means that in 10 years, wireless will be
better, faster and cheaper but it won't have made significant inroads
replacing fiber to the home and business.

20 years is a long time. 10 years, not so much. Even for the long
times, we can find the future by examining the past. The duration of
use of the predecessor technology (twisted pair) was about 50 years
ubiquitously deployed to homes. From that we can make an educated
guess about the current one (fiber). Fiber to the home started about
10 years ago leaving about 40 more before something better might
replace it.

Regards,
Bill Herrin



--
William D. Herrin ................ herrin () dirtside com  bill () herrin us
3005 Crane Dr. ...................... Web: <http://bill.herrin.us/>
Falls Church, VA 22042-3004




-- 
Ray Soucy

Epic Communications Specialist

Phone: +1 (207) 561-3526

Networkmaine, a Unit of the University of Maine System
http://www.networkmaine.net/


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