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Electro-optic waveguide deflector using a nonlinear optic film or liquid-crystal overlay cell for use in an optical pickup head

  • US 5,291,567 A
  • Filed: 07/21/1992
  • Issued: 03/01/1994
  • Est. Priority Date: 07/21/1992
  • Status: Expired due to Fees
First Claim
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1. An integrated electro-optic waveguide deflector, comprising:

  • a planar electrode;

    an optical waveguide layer for deflecting light, said waveguide layer overlying said planar electrode and having a refractive index;

    a pair of spaced electrodes overlying said waveguide layer, each of said electrodes having a prism configuration defining a prism angle; and

    means for selectively applying an electric field between said pair of electrodes and said planar electrode so that deflection varies with applied voltage according to a formula;

    ##EQU5## where Δ

    Θ

    is the deflection angle of a collimated beam in the waveguide layer, Δ

    n is the electro-optically induced index change, n is the effective index of refraction of the waveguide, and Γ

    is the prism angle.

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