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Optical repeater having independently controllable amplification factors

  • US 6,956,693 B2
  • Filed: 07/29/2003
  • Issued: 10/18/2005
  • Est. Priority Date: 07/30/2002
  • Status: Expired due to Fees
First Claim
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1. An optical repeater comprising:

  • a first backward pumping optical coupler and a first forward pumping optical coupler inserted in a first optical fiber transferring therethrough first optical signals;

    a second backward pumping optical coupler and a second forward pumping optical coupler inserted in a second optical fiber transferring therethrough second optical signals;

    a first light source for supplying a first pump light having a first power level to said first backward pumping optical coupler and said second forward pumping optical coupler;

    a second light source for supplying a second pump light having a second power level to said first forward pumping optical coupler and said second backward pumping optical coupler; and

    a driver for driving said first and second light sources to control said first power level and said second power level.

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