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Multichannel optical waveguide page scanner with individually addressable electro-optic modulators

  • US 5,418,871 A
  • Filed: 08/23/1994
  • Issued: 05/23/1995
  • Est. Priority Date: 02/16/1993
  • Status: Expired due to Term
First Claim
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1. A page scanner, comprising:

  • a diode laser;

    a substrate having an index of refraction;

    a primary optical channel waveguide formed on said substrate;

    means for coupling light from said diode into said primary channel waveguide;

    multiple secondary side channels formed on said substrate each having a thin-film electro-optic waveguide modulator formed therein including variable absorbers formed on each secondary side channel to equalize light in each side channel;

    a series of identical T-branch couplers formed on said substrate and distributing light in parallel from said primary channel to said secondary side channels so that a diminishing portion of light is coupled into each successive side channel; and

    means for electrically addressing each of said electro optic waveguide modulators.

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