Optical device

An optical device comprising:na first substrate with a control circuit formed thereon; anda second substrate disposed above the first substrate and including an optical waveguide layer having a refractive index changed by electro-optic effect and a prism electrode that applies a voltage to the optical waveguide layer,the control circuit and the prism electrode being electrically connected by a conductor,the conductor having a columnar middle portion that is thinner than both end portions and the columnar middle portion is flexible in response to an applied external force.

An optical device comprising:na first substrate with a control circuit formed thereon;a second substrate disposed above the first substrate and including an optical waveguide layer having a refractive index changed by electro-optic effect and a prism electrode that applies a voltage to the optical waveguide layer, the control circuit and the prism electrode being electrically connected by a columnar conductor; anda third substrate disposed at least between the first substrate and the second substrate; and in which the optical waveguide layer is formed on the side of the surface of the second substrate opposed to the third substrate,the prism electrode is formed on the side of the surface of the optical waveguide layer opposed to the third substrate,another optical waveguide layer optically connected to the optical waveguide layer, is formed on the third substrate, andthe columnar conductor is disposed in an opening formed in the third substrate.

An optical device comprising:na first substrate with a control circuit formed thereon;a second substrate disposed above the first substrate and including an optical waveguide layer having a refractive index changed by electro-optic effect and a prism electrode that applies a voltage to the optical waveguide layer, the control circuit and the prism electrode being electrically connected by a conductor;a spacer disposed between the first substrate and the second substrate; anda third substrate disposed on the first substrate, and in whichthe optical waveguide layer is formed on the side of the surface of the second substrate, opposed to the spacer,the prism electrode is formed on the side of the surface of the optical waveguide layer, opposed to the spacer, andanother optical waveguide layer optically connected to the optical waveguide layer is formed on the third substrate.

An optical device, comprising:na first substrate; anda first optical waveguide substrate disposed above the first substrate and having a prism electrode,wherein the first substrate and the prism electrode are electrically connectable by a conductor having a middle portion that is thinner than both end portions and the middle portion is flexible in response to an applied external force.