Patent ID: 7995872

Claim:
An optical modulator comprising: an optical modulator component comprising: a substrate for modulation made of an electro-optical material and having a joining face and a bottom face; an optical waveguide provided in or on the substrate and comprising at least one pair of branched portions; a radio-frequency interaction portion applying a voltage on the respective branched portions to modulate light propagating through the branched portions; a support base having an upper face; and an adhesive layer adhering the upper face of the support base and the bottom face of the substrate for modulation to each other, wherein the optical waveguide comprises end faces present on the joining face of the substrate for modulation; and a passive component comprising: a substrate made of an electro-optical material and having a joining face, and an optical waveguide formed in or on the substrate for the passive component, wherein the optical waveguide comprises end faces present on the joining face of the substrate for the passive component, wherein the end faces of the optical waveguide of the passive component is optically connected to the respective end faces of the optical waveguide of the optical modulator component; and wherein the joining face of the substrate for the passive component is joined to the joining face of the substrate for the optical modulator component, the adhesive layer and the support base.