Re: Analog vs. Digital defined

Eugene Leitl (
Fri, 6 Mar 1998 16:22:38 +0300 (MSK)

On Thu, 5 Mar 1998, David C. Harris wrote:

> Can you point me to any online material about the electronics used in
> sending audio signals over fiber optics? Here in Palo Alto a bunch of
> us are trying to figure out the best way to bring high speed data
> connectivity to our homes. The businesses already have optic fibers,

If you are talking about a

0. Plain (Fast)Ethernet. Switching hubs cheap now. Take care of ground
loops. Had at least 2 cards fried in the building yesterday since no
proper ground.
1. Line-of-sight laser (NIR-LED) links. Making PPP over an IrDa booster
should get you started. Concave cosmetical mirrors make great
improvised optics in VIS and NIR range.
2. DIY microwave cellular (can use existing LNBs/dishes?)
2.5 (uwave) HAM packet radio
3. any other ideas?


P.S. Monomode and gradient plastic fiber in pipeline now. Coherency @ GBit
length roughly 300 m, which does mean many hops.

> but at high cost. I'm interested in using Fast Ethernet, but splicing
> optic fiber in place of the Category 5 wires for those homeowners who
> want to "future proof" their connection.