Patent ID: 6459711
Filing Date: 2002-10-01
Classification: H01S

Abstract:
An optical semiconductor device comprising:a laser light source that emits light; a semiconductor substrate wherein said laser light source is mounted in a concave portion provided on a surface of said semiconductor substrate so that an optical axis of the light from said laser light source is substantially parallel to the surface of said semiconductor substrate, and the light from said laser light source is reflected at a side surface of the concave portion in a direction substantially perpendicular to the surface of said semiconductor substrate; at least one light receiving portion provided in a peripheral area outside the concave portion on the surface of said semiconductor substrate; a first light intercepting film provided at least in an area posterior to said laser light source on a bottom surface of the concave portion when a light emitting side of said laser light source is a front side; and a second light intercepting film provided at least on, of side surfaces of the concave portion, a side surface between said laser light source and said light receiving portion.