Patent ID: 11947171
Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 7:
8. A method of manufacturing an optical waveguide component comprising an optical waveguide provided on an upper surface of a substrate and including a core and a clad covering the core and an optical path conversion unit that is formed in a part of the optical waveguide and converts an optical path of an optical signal and inputs and outputs the optical signal to and from an optical element to be mounted, the method comprising:
an optical path conversion unit formation step for forming for the optical waveguide an inclined groove to be deeper than the core in a direction intersecting an emission direction of the optical signal in the core and perpendicular to a horizontal direction of the substrate and forming the optical path conversion unit to include an input-output unit using as a mirror surface a local portion of an inclined surface on the side of the core in the inclined groove; and
an offset unit formation step for providing for the optical waveguide a groove on the side of an opposite inclined surface opposing the mirror surface of the inclined groove and forming an offset unit in the horizontal direction of the substrate to communicate with the inclined groove,
wherein in the offset unit formation step, the offset unit is formed such that a distance between a region exceeding the opposite inclined surface on an extension line of the core intersecting the mirror surface and the mirror surface is longer than a distance between a region other than the region exceeding the opposite inclined surface and the mirror surface.