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From: lairdb@crash.cts.com (Laird P. Broadfield)
Newsgroups: comp.dcom.modems
Subject: Visible-wavelength LASER modems?
Message-ID: <1991Jun6.195739.19770@crash.cts.com>
Date: 6 Jun 91 19:57:39 GMT
Sender: root@crash.cts.com
Reply-To: lairdb@crash.cts.com (Laird P. Broadfield)
Organization: "Well, a head on top, an arm on each side, two legs...."
Lines: 21

Okay folks, here's an oddball request for ya'.

I'm looking for modems using visible-wavelength lasers as the "physical"
media.  I've got bucketloads of info on high-speed microwave-based
links, but I don't think I've even seen anything laser-based.

Speed can be as low as 2400 baud, range in use probably won't exceed
one mile.  (Yes, I am aware of all the things that can block transmission,
they shouldn't be a consideration for this setup.)  

Alternatively, I suppose I could use regular modems and analog-modulate
the beam to simulate a line, or conceivably I could treat the laser as
a line driver and put a photocell on the other end; either of which
requires a laser with a "modulate" connector.  Anybody can point me
at one of those?

Any and all hints and pointers are appreciated!

--  Laird P. Broadfield                        | Year after year, site after
    UUCP: {ucsd, nosc}!crash!lairdb            | site, and I still can't think
    INET: lairdb@crash.cts.com                 | of a funny enough .sig.