Patent ID: 9046668
Filing Date: 2015-06-02
Classification: G02B,H01L,H01S

Abstract:
1. An optical module comprising: a substrate that is formed with a plurality of first trenches in a surface thereof; an internal waveguide that is provided in each of the plurality of first trenches and has a core section; a mirror section for changing an optical path, formed at each of tip portions of the plurality of first trenches; and a plurality of optical elements, each of the plurality of optical elements is mounted on the surface of the substrate so as to oppose the mirror section, respectively, and the plurality of optical elements include a light-emitting element which emits an optical signal to the core section of the internal waveguide via the mirror section and a light-receiving element which receives the optical signal from the core section of the internal waveguide via the mirror section, wherein the plurality of first trenches of the substrate are formed independently of each other and substantially in parallel with each other, lengths of the adjacent first trenches from an end surface of the substrate are different from each other, and the light-emitting element is mounted on the surface of the substrate so as to oppose the mirror section formed at a tip portion of the internal waveguide shorter in length than the internal waveguide optically coupled to the light-receiving element.