Optical waveguide package and light-emitting device

Abstract

An optical waveguide package includes a substrate including a first surface, a cladding on the first surface and including a second surface facing the first surface, a third surface opposite to the second surface, and an element mount with an opening in the third surface, a core in the cladding, a first electrode located in the element mount, and a second electrode connected to the first electrode and extending to outside the element mount. A light-emitting element is mountable on the first electrode. The first electrode has a lower thermal expansion coefficient than the second electrode.

Dependencies are inferred from the claim text.