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Optical modulator and communications system

  • US 20050196092A1
  • Filed: 04/25/2005
  • Published: 09/08/2005
  • Est. Priority Date: 06/26/2003
  • Status: Abandoned Application
First Claim
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1. An optical modulator comprising an optical waveguide made of a material with an electro-optic effect and a modulating electrode for applying a modulating electric signal to light propagating through the optical waveguide, wherein the optical waveguide is defined on an electro-optic crystal substrate, wherein the optical waveguide is defined as a ridge on the surface of the electro-optic crystal substrate, and wherein the modulator further includes a periodic structure, of which the equivalent refractive index changes periodically in a light propagation direction and which reduces a group velocity of the light propagating through the optical waveguide.

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