Patent ID: 7224875
Filing Date: 2007-05-29
Classification: G02B,H01S

Abstract:
1. A semiconductor optical device, comprising: an optical detector including an absorption layer formed in a second mesa; an optical waveguide including an active layer, a first end surface, a second end surface and an optical axis connecting said first end surface to said second end surface, said active layer being formed in a first mesa and generating light, said first end surface having a normal line; and a substrate for integrally disposing said first mesa and said second mesa, wherein said normal line of said first end surface makes an angle with said optical axis such that light generated in said active layer is partially reflected within a plane substantially in parallel to said active layer and to said substrate by said first end surface and directly enters said absorption layer of said optical detector without further reflection, and wherein said first mesa and said second mesa are electrically isolated from each other by a groove that is formed therebetween and that extends down to said substrate.