Patent ID: 7239764
Filing Date: 2007-07-03
Classification: G02F

Abstract:
1. An optical waveguide device, comprising: a substrate cut in a Z-axis direction and having an electro-optical effect; an interference type optical waveguide formed on said substrate for causing lights which propagate along a pair of optical waveguides to interfere with each other; and a lumped-constant type electrode for applying voltages for the electro-optical effect to the respective lights propagating along said optical waveguides which form said interference type optical waveguide, wherein the branch electrodes of the second comb-shaped electrode include a second waveguide electrode section formed above the other of the optical waveguides in the pair, the branch electrodes of the first comb-shaped electrode include two potential difference producing electrode sections which sandwich in the second waveguide electrode waveguide section, and the branch electrodes of the second comb-shaped electrode include two potential difference producing electrode sections which sandwich in the first waveguide electrode section.