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Optoelectronic device with wavelength filtering by cavity coupling

  • US 6,768,097 B1
  • Filed: 08/05/2003
  • Issued: 07/27/2004
  • Est. Priority Date: 02/05/2001
  • Status: Expired due to Term
First Claim
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1. An optoelectronic filter device, comprising:

  • first means that define a first resonant cavity having a thickness and a composition that are chosen so as to exhibit a multiplicity of resonant transmission modes over a chosen wavelength range;

    second means that define a second resonant cavity having a thickness and a composition that are chosen so as to exhibit a single resonant transmission mode over said chosen range, means for optically coupling said first and second means; and

    electrostatic means designed to apply an electrical voltage to said second means, said electrical voltage being chosen so as to vary the thickness of the second cavity and the spectral position of the associated resonant mode so that it coincides with any one of the resonant modes of the first cavity in order to produce a filter having two optically coupled resonant cavities.

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