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Time delay beam formation

  • US 5,623,360 A
  • Filed: 02/13/1995
  • Issued: 04/22/1997
  • Est. Priority Date: 12/12/1991
  • Status: Expired due to Term
First Claim
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1. A system for generating at least one time delay signal from an input signal, comprising the elements A-H:

  • A) a source of coherent light,B) divider means for dividing the light into at least a first leg and a second leg,C) modulation means for modulating light in the first leg by a signal,D) optical isolator means for preventing light in the first leg from being reflected back towards the source of coherent light,E) signal channelizer means for dividing modulated light in the first leg into a plurality of spectral components,F) signal control means for dividing light in the second leg into a plurality of paths and for shifting the phase of light in each of the plurality of paths to thereby generate a plurality of phase-shifted optical reference signals, each one of the plurality of phase-shifted optical reference signals corresponding to one of the plurality of spectral components,G) detection means for detecting each one of the plurality of phase-shifted optical reference signals together with a corresponding one of the spectral components and for generating an output signal, andH) summation means for summing output signals generated by the detection means.

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