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Gain saturation in EDFA amplifiers

  1. Jan 27, 2009 #1

    Why for arbitrary high input power the gain saturates in EDFA (erbium-doped fiber amplifer)?
  2. jcsd
  3. Jan 27, 2009 #2


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    Staff: Mentor

    For arbitrarily high input power? Seems like you've answered your own question.

    Can you provide a pointer to information about the EDFA you are using, and be more specific about the power levels you want to run at?
  4. Jan 27, 2009 #3
    I'm interested more in physical background. Why in saturated gain region gain is lower than in unsaturated (small signal) gain region. what happens with population inversion?
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