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Optical counter-phase system and method of RF interference cancellation

  • US 8,693,810 B2
  • Filed: 11/05/2009
  • Issued: 04/08/2014
  • Est. Priority Date: 11/05/2008
  • Status: Active Grant
First Claim
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1. An interference cancellation system comprising:

  • a first electro-optic modulator for receiving a first signal;

    a second electro-optical modulator for receiving a second signal together with said first signal, said first and second electro-optical modulators being biased for parallel counter-phase modulation;

    an optical attenuator connected to said second electro-optical modulator;

    an optical coupler connected to said first and second electro-optical modulators, said second electro-optic modulator being connected to said optical coupler through said optical attenuator and said optical delay.

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