Patent ID: 8269301

Claim:
A submount including a first substrate having optical device mounting parts for mounting optical devices and a wiring part for supplying power to the optical devices which are formed on a main surface thereof, and a second substrate composed of a glass substrate having a through hole formed therein, the first substrate and the second substrate joined together such that the optical device mounting parts of the first substrate are aligned inside the through hole of the second substrate, wherein the first substrate is composed of a substrate containing an insulating material as a main component, the wiring parts are a metallized electrode having first wiring parts supplying power to one electrode terminal of each of the optical devices mounted on the optical device mounting parts, and second wiring parts provided adjacent to the first wiring parts and supplying power to another electrode terminal of each of the optical devices, and an anodic bond of a metallized joint for joining the first substrate and the second substrate provided in a region other than a region where the wiring part is exposed on the main surface of the first substrate.