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Optical SSB modulator

  • US 7,239,763 B2
  • Filed: 03/22/2005
  • Issued: 07/03/2007
  • Est. Priority Date: 03/24/2004
  • Status: Active Grant
First Claim
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1. An optical single side band (SSB) modulator comprising:

  • one or more sub Mach-Zehnder waveguides; and

    a main Mach-Zehnder waveguide provided with the one or more sub Mach-Zehnderwaveguides;

    wherein;

    an output portion of at least one sub Mach-Zehnder waveguide among the sub Mach-Zehnder waveguides has an X-branching form; and

    among two waveguides stretching from the X-branching formed output portion, one waveguide is connected to a photodetector for measuring a light intensity, and a remaining waveguide is a waveguide for an output light from the optical modulator.

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