laser communication through air

Discussion in 'The Projects Forum' started by vishnu.mec, Dec 14, 2011.

  1. vishnu.mec

    Thread Starter New Member

    Aug 6, 2010
    21
    0
    hai all..!

    when two people who are within eyesight want to communicate securely(as in military frontiers), can't we use the following:

    a modulator that modulates laser using the audio at the sender end and points the laser at the receiver end. this receiver then demodulates the laser to get the message.
    there will be another laser at the transmitter end. when this laser is reflected from the receiver and gets back to the sender a gyroscope at the sender end is activated and the 'message laser' is fixed to the receiver.

    what do you guys think?
     
  2. nerdegutta

    Moderator

    Dec 15, 2009
    2,515
    785
    The Germans did something like that during WWII. Try to google

    Lichtsprechgerät 80/80

    It's not laser, but really cool...
     
  3. mcgyvr

    AAC Fanatic!

    Oct 15, 2009
    4,770
    970
    There are a bunch of finished projects/schematics,etc... on google about it.
     
  4. bertus

    Administrator

    Apr 5, 2008
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    2,347
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