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Frequency modulated laser - transmission of voice

  1. Feb 5, 2015 #1
    If I modulated a laser frequency with voice, would a photo cell be capable of receiving that information?
  2. jcsd
  3. Feb 5, 2015 #2

    Quantum Defect

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    A very good website with a lot of fun activiites: http://scitoys.com/ [Broken] has an example project along these lines (amplitude modulation though, not frequency modulation).
    Last edited by a moderator: May 7, 2017
  4. Feb 5, 2015 #3


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    I have done it with PWM. Low pass filter the signal at the detector and you have your audio.
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