Patent ID: 6961494

Claim:
An optical waveguide device comprising: a first substrate having an electro-optical effect, the first substrate having thereon formed a first optical waveguide and a second optical waveguide, a first electrode through which a first electrical signal progresses that interacts with a light signal propagating along the first optical waveguide, and a second electrode through which a second electrical signal progresses that interacts with a light signal propagating along the second waveguide; the first substrate having thereon arranged a first and a second input sections corresponding respectively to the first and the second electrodes; and a second substrate on which are formed strip lines connecting the first and second input sections with a first and a second electric connectors that supply the first and the second electrical signals corresponding thereto, respectively, wherein a space between the strip lines on the second substrate at one end of the strip lines connected to the first and the second input sections is adapted to be narrower than a space between the strip lines at the other end of the strip lines connected to the first and the second electric connectors.