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Photonic RF frequency conversion

  • US 8,538,270 B2
  • Filed: 10/26/2010
  • Issued: 09/17/2013
  • Est. Priority Date: 10/26/2009
  • Status: Active Grant
First Claim
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1. A method for converting a frequency of a signal based on photonic processing, comprising:

  • producing a modulated optical signal that is at an optical carrier frequency and carries an input radio frequency (RF) signal;

    coupling light of the modulated optical signal into an optical resonator that supports optical resonator modes and exhibits a frequency difference between two adjacent optical resonator modes that is different from an RF frequency of the input RF signal;

    coupling light out of the optical resonator as an optical output signal that carries a first set of optical sidebands corresponding to the RF signal and a second set of optical sidebands corresponding to the optical resonator modes; and

    using an optical detector to convert the optical output signal into an output electrical signal that is a replica of the input RF signal at an output electrical signal frequency that is shifted from the RF frequency of the input RF signal.

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