US 2003/0147576 A1 · Optical waveguide device

Abstract

The present invention provides an optical waveguide device wherein a driving voltage to be applied is reduced. The optical waveguide device comprises a substrate cut in a Z-axis direction and having an electro-optical effect, an interference type optical waveguide formed on the substrate for causing lights which propagate along a plurality of parallel optical waveguides to interfere with each other, and a lumped-constant type electrode for applying a voltage for the electro-optical effect to the light propagating along the optical waveguides which form the interference type optical waveguide. The lumped-constant type electrode complements potentials to be supplied to adjacent ones of the plurality of parallel optical waveguides to each other such that voltages having an equal absolute value but having the opposite signs are applied to the adjacent optical waveguides. The apparatus of the present invention is applied to, for example, an optical communication system.

Claims10

Dependent claims

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 plurality of parallel 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;
said lumped-constant type electrode complementing potentials to be supplied to adjacent ones of said plurality of parallel optical waveguides each other such that voltages having an equal absolute value but having the opposite signs are applied to the adjacent optical waveguides.

2 more elements

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 plurality of parallel optical waveguides to interfere with each other;
a plurality of signal electrodes formed respectively on said optical waveguides which form said interference type optical waveguide;
and
a bias electrode for biasing signal components to be applied to the respective signal electrodes;
said bias electrode complementing potentials to be supplied to adjacent ones of said plurality of parallel optical waveguides each other such that voltages having an equal absolute value but having the opposite signs are applied to the adjacent optical waveguides.

3 more elements

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 two parallel optical waveguides to interfere with each other;
a first signal electrode formed on one of said two parallel optical waveguides which form said interference type optical waveguide;
a second signal electrode formed on the other of said two parallel optical waveguides which form said interference type optical waveguide;
a first bias electrode for biasing a signal component to be applied to said first signal electrode;
and
a second bias electrode for biasing a signal component to be applied to said second signal electrode;
said first and second bias electrodes complementing the potentials thereof each other such that voltages having an equal absolute value but having the opposite signs are applied to said two parallel optical waveguides.

5 more elements

Dependencies are inferred from the claim text.

Optical waveguide device

Life of this patent

Optical waveguide device

Life of this patent

Abstract

Claims10