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OPTICAL PRE-AMPLIFIER APPARATUS AND METHOD FOR RECEIVER PERFORMING GAIN CONTROL ACCORDING TO LOS DECLARATION

  • US 20030030893A1
  • Filed: 12/22/2000
  • Published: 02/13/2003
  • Est. Priority Date: 12/22/2000
  • Status: Active Grant
First Claim
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1. An apparatus for optically preamplifying a signal being input to a receiving device, comprising:

  • an optical amplifier optically coupled to an input port of the receiving device, said optical amplifier optically amplifying an input signal and outputting the optically amplified signal to the receiving device;

    a pump optically coupled to said optical amplifier, said pump injecting pumping light into said optical amplifier to provide the optical amplification of the input signal; and

    a controller operatively connected to said pump and to the receiving device, said controller receiving power measurements from the receiving device indicative of the amplified signal'"'"'s optical power;

    said controller commanding a pump power level output by said pump to perform gain control according to the power measurements received from the receiving device; and

    said controller setting the commanded pump power level of said pump to a home gain value upon an occurrence of a loss of signal event.

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