Article View: sci.electronics
Article #17342Re: Wireless data link
From: Henry Spencer
Date: Tue, 10 Mar 1987 22:18
Date: Tue, 10 Mar 1987 22:18
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> Since you are referring to semiconductor lasers, such as gallium
> arsenide injection laser diodes, you don't have much choice as to the
> wavelength range of available products: 820 nanometers to somewhat less than
> 1.0 micron. Infrared LED's are also available only in the same range.
A thought comes: if you do end up using LEDs, you might want to consider
visible light rather than IR. I haven't done the numbers on things like
efficiency and sensitivity, but ASSUMING THOSE ARE COMPARABLE, you will
find visible-light hardware quite a bit easier to work with during debugging.
(It's not suitable if you want your final system to be inconspicuous, of
course.)
--
"We must choose: the stars or Henry Spencer @ U of Toronto Zoology
the dust. Which shall it be?" {allegra,ihnp4,decvax,pyramid}!utzoo!henry
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!henry From: henry@utzoo.UUCP (Henry Spencer) Newsgroups: sci.electronics Subject: Re: Wireless data link Message-ID: <7760@utzoo.UUCP> Date: Tue, 10-Mar-87 17:18:05 EST Article-I.D.: utzoo.7760 Posted: Tue Mar 10 17:18:05 1987 Date-Received: Tue, 10-Mar-87 17:18:05 EST References: <214@pluto.UUCP> <250@pluto.UUCP> <175@tiger.Princeton.EDU>, <1643@kitty.UUCP> Organization: U of Toronto Zoology Lines: 14 Keywords: high speed, short distance