Patent ID: 8828250
Filing Date: 2014-09-09
Classification: G02B,H01L

Abstract:
1. A method of manufacturing an optical element module including a silicon substrate having a front surface and a rear surface and in which an optical element and a semiconductor circuit element are mounted on one surface of the front surface and the rear surface of the silicon substrate, the optical element is a light receiving element or a light emitting element, a mirror surface inclined at approximately 45 degrees with respect to the front surface and the rear surface of the silicon substrate and inclined at approximately 45 degrees with respect to a substrate thickness direction of the silicon substrate is formed on the other surface of the front surface and the rear surface of the silicon substrate, and an optical fiber facing the mirror surface is disposed in a V groove formed along the other surface in a state in which an end of the optical fiber is attached to an attaching surface, the method of manufacturing the optical element module comprising the steps of: forming the mirror surface and V-shaped side surfaces of the V groove simultaneously by a first crystal anisotropic etching on the other surface; and forming the attaching surface substantially perpendicular to the one surface and the other surface, which is formed at an end side of the V groove, and for attaching the end of the optical fiber, by a second crystal anisotropic etching in a crystal plane orientation different from that of the first crystal anisotropic etching.