Article View: sci.electronics
Article #7287Re: Lasers for communication
From: John Berryhill
Date: Mon, 17 Sep 1990 00:03
Date: Mon, 17 Sep 1990 00:03
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In article <7504@milton.u.washington.edu> wiml@milton.u.washington.edu (William Lewis) writes: > > I have a HeNe laser that I'd like to use for communication also. >My question is: how would I go about adding a modulator to the supply? First off, these questions are better answered in the library than on the net. However, if you want to use your HeNe to transmit a signal, you are going to be much better off modulating the light than its source. In other words, let the HeNe stay on all the time and use something in beam path that can either deflect the beam (an acousto-optic modulator for instance) or vary its opacity (an LCD window with a polarizer crossed wrt the LCD). -- John Berryhill 143 King William, Newark DE 19711
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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!cs.utexas.edu!asuvax!noao!ncar!mephisto!udel!berryh From: berryh@udel.edu (John Berryhill) Newsgroups: sci.electronics,sci.physics Subject: Re: Lasers for communication Message-ID: <30638@nigel.ee.udel.edu> Date: 17 Sep 90 00:03:00 GMT References: <153DAVE@ORION> <1990Sep13.020325.10622@nmt.edu> <7504@milton.u.washington.edu> Sender: usenet@ee.udel.edu Followup-To: sci.garbage Organization: University of Delaware Lines: 20 Nntp-Posting-Host: huey.udel.edu