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Method and apparatus for channel selective control of light propagation in an optical waveguide

  • US 7,006,733 B2
  • Filed: 01/21/2004
  • Issued: 02/28/2006
  • Est. Priority Date: 09/10/2002
  • Status: Expired due to Fees
First Claim
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1. A variable optical device for selectively controlling propagation of light within an optical waveguide, the optical device comprising:

  • a hidden relief modulation (HRM) cell disposed proximal the optical waveguide, the HRM cell comprising;

    a relief modulation defining a grating disposed on a surface of the HRM cell opposite the waveguide and having a respective grating index of refraction nG; and

    at least one electrode disposed on the surface of the HRM cell adjacent the relief modulation; and

    a matrix disposed between the HRM cell and the optical waveguide, the matrix being in electrical contact with the at least one electrode and surrounding at least the relief modulation, the matrix having an index of refraction nEO that is controllable, in response to a selected stimulus between a first value that is substantially equal to the grating index of refraction nG, and a second value.

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