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Brillouin opto-electronic oscillators

  • US 5,917,179 A
  • Filed: 01/21/1998
  • Issued: 06/29/1999
  • Est. Priority Date: 05/12/1997
  • Status: Expired due to Fees
First Claim
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1. An opto-electronic device, comprising:

  • an electro-optical modulator having an electrical input port that accepts an electrical modulation signal and an optical output port and operating to generate at said optical output port an optical carrier signal which is modulated at an oscillation frequency related to said electrical modulation signal;

    an opto-electronic loop connecting said optical output port and said electrical input port to receive at least a portion of said optical carrier signal and having an optical medium that produces a Brillouin scattering signal in a direction of said optical carrier signal in response to an optical pump signal which propagates in an opposite direction of said optical carrier signal; and

    a photodetector disposed to receive said Brillouin scattering signal and said optical carrier signal and configured to produce said electrical modulation signal, wherein said opto-electronic loop provides a positive feedback to effect an electromagnetic oscillation.

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