US 6,661,939 B2 · Optical module and method for manufacturing same

Abstract

An optical module comprising: an optical element flip-chip mounted on a substrate; an optical waveguide formed on the substrate and optically connected to the optical element; and underfill resin filled in between the substrate and the optical element and covering an optical junction between the optical element and the optical waveguide, wherein the underfill resin is of an electrically insulating material and has a refractive index equal to or smaller than a refractive index of a clad portion of the optical waveguide. The optical element can be flip-chip mounted with improved mechanical and electrical mounting reliability and thus satisfactory optical connection can be maintained. Further, it never occurs that light passing through the optical waveguide leaks to the underfill resin in the optical junction between the optical waveguide and the optical element.

Claims12

Dependent claims

An optical module comprising:

a substrate having an electric circuit formed thereon;
a surface light receiving optical element or surface light emitting optical element flip-chip mounted on the substrate so that a light-receiving surface or light-emitting surface thereof faces the substrate side;
an optical waveguide formed on the substrate, the optical waveguide having a core portion and a clad portion optically connected to the surface light receiving optical element or the surface light emitting optical element;
and
underfill resin filled in between the substrate and the light-receiving surface or between the substrate and the light-emitting surface, the underfill resin covering an optical junction between the surface light receiving optical element or the surface light emitting optical element and the optical waveguide,
wherein the underfill resin is of an electrically insulating material and has a refractive index equal to or smaller than a refractive index of the clad portion of the optical waveguide.

3 more elements

Dependencies are inferred from the claim text.

Optical module and method for manufacturing same

Life of this patent

Optical module and method for manufacturing same

Life of this patent

Abstract

Claims12