Patent ID: 9244222
Filing Date: 2016-01-26
CPC Classification: G02B,H05K

Claim Text:
1. An optical waveguide device, comprising: a wiring substrate; a connection pad formed in the wiring substrate; an optical waveguide in which a first cladding layer, a core layer, and a second cladding layer are formed on the wiring substrate in this order; an opening portion formed in the second cladding layer in a region including the connection pad, the opening portion penetrating from an upper face to a lower face of the second cladding layer; a contact hole formed at least in the first cladding layer on the connection pad, and the contact hole being communicated with the opening portion of the second cladding layer; an optical element, including a connection terminal, connected to the connection pad through the contact hole; and underfill resin filled in the opening portion of the second cladding layer and the contact hole, and the underfill resin sealing a lower side of the optical element, wherein a part of the opening portion of the second cladding layer protrudes outward from an outer edge of the optical element, and is exposed from the optical element.