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SELF INJECTION LOCKED PHASE LOCKED LOOPED OPTOELECTRONIC OSCILLATOR

  • US 20140186045A1
  • Filed: 02/06/2013
  • Published: 07/03/2014
  • Est. Priority Date: 12/28/2012
  • Status: Active Grant
First Claim
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1. An opto-electronic oscillation circuit for sustaining an oscillating optical signal, the circuit comprising:

  • a self injection locking component configured to receive a first portion of the optical signal, and further comprising a fiber optic delay line over which the optical signal propagates;

    a self phase locked loop component configured to receive a second portion of the oscillating optical signal, and further comprising;

    at least two fiber optic cables over which the optical signal propagates, wherein the two fiber optic cables have different lengths and at least one of the fiber optic cables is a fiber optic delay line; and

    at least one phase detector coupled to the at least two fiber optic cables and configured to determine a difference in phase between a signal propagating over one of the fiber optic cables and a signal propagating over another of the fiber optic cables; and

    a voltage controlled oscillator configured to generate a stable oscillating signal in response to each of an injection locking signal generated by the self injection locking component and a phase locked loop signal generated by the self phase locked loop component, the stable oscillating signal being configured to RF modulate the optical signal.

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