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What is meant by Power in -ive dBm?

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(joined March 2015)
Participant

Dear Members
I want to inquire what is difference between Laser Power in +dBm and -ive dBm

For Example

What is difference between -16dBm and 16dBm Laser power…

Responses (3):

    • #18921
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      Abdullah Baig
      Participant

      Dear Members
      I want to inquire what is difference between Laser Power in +dBm and -ive dBm

      For Example

      What is difference between -16dBm and 16dBm Laser power…

    • #18950
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      Abdallah Ismail
      Participant

      completely different
      power in dBm = 10 log (power in w/1mw)
      power in mw = 10^(power in dBm/10)
      w = watt
      16 dBm = 39.4 mw
      -16 dBm = 25.12 micro-watt

      +4
    • #18963
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      Abdullah Baig
      Participant

      Sir Abdallah Thanx for Reply. Got your point 🙂

    • #19017
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      Ravil
      Participant

      It is just a logarithmic scale of power values…

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