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Optical waveguide interferometer modulator-switch

  • US 4,070,094 A
  • Filed: 08/25/1975
  • Issued: 01/24/1978
  • Est. Priority Date: 08/25/1975
  • Status: Expired due to Term
First Claim
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1. An optical waveguide interferometer modulator comprising:

  • an optical waveguide for transmitting single mode optical energy;

    first and second single mode optical waveguide branches defined by electro-optically responsive material converging at a common connection to said optical waveguide, and diverging along a substantially co-extensive distance to reconverge for providing first and second single mode light paths of substantially identical optical length;

    a light path connecting with said first and second single mode optical waveguide branches at their reconvergence;

    conductive electrodes disposed contiguous to a portion of at least one of said single mode optical waveguide branches between its points of divergence and reconvergence;

    a source of electrical energy; and

    switch means controlling connection of said electrodes with said source of electricl energy to selectively change the optical properties of at least one of said single mode optical waveguide branches by impressing an electric field thereacross causing relative phase shift between the optical energy transmitted through said branches, and producing destructive optical interference in said light path at the reconvergence of said first and second single mode optical waveguide branches.

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