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Compact mach-zehnder interferometer and wavelength reference employing same

  • US 6,115,520 A
  • Filed: 03/05/1998
  • Issued: 09/05/2000
  • Est. Priority Date: 03/05/1998
  • Status: Expired due to Term
First Claim
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1. In a Mach-Zehnder optical interferometer comprising a pair of optical waveguides extending between a pair of optical coupling regions, said waveguides having different optical paths between said coupling regions for producing transmission maxima and minima,the improvement wherein each waveguide of said pair comprises a first segment, a second segment and a reflector optically coupling said first segment and said second segment.

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