Giga House Town effort of Keio University 2002 report (note effort was 2000 on)

[Dave Farber <dave () farber net>]

Begin forwarded message:

> From: Rodney Van Meter <rdv () sfc wide ad jp>
> Date: February 15, 2010 9:07:19 PM EST
> To: dave () farber net
> Cc: "Jonathan M. Smith" <jms () cis upenn edu>
> Subject: Re: [IP] Giga House Town effort of Keio University 2002  
> report (note effort was 2000 on)

> > > A.  Giga House Town Project - Exhibition
> > > This is a new project co-ordinated by Keio Engineering Foundation  
> > > and financed by Industry and Government to demonstrate that graded  
> > > index plastic optical fibre GI–POF,
>
> "New" is a relative term here.  Note that the conference being  
> reported on took place in *2002*.  100Mbps fiber to the home is  
> common here now, and has been for several years.  Supposedly a  
> single gigabit loop connects up to 32 houses at 100Mbps each, so  
> it's slightly but not wildly oversubscribed.  (My upstream ISP is  
> IIJ, which has a reputation for a fat, well-run network, and I  
> regularly push >70Mbps through the pipe, file system to file system,  
> when I'm connected to the wired LAN.)
>
> I can name a particularly prominent Internet researcher here who has  
> 10Gbps to his house, and has for several years.
>
> > > such as the Asahi Glass  ‘Lucina’ fibre (with attenuation less t 
> > > han 20dB/km with transmission extending from the visible to 1.3mm),
>
> That's what the report says, and I would suspect it of being a  
> misprint, but I found a couple of other reports with similar  
> numbers.  At those levels, you need an amplifier every 3-4km!  Not  
> very practical.  Glass would be more like 20dB/100km, but this is  
> some sort of new plastic.
>
>        --Rod



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