Patent ID: 6960791
Filing Date: 2005-11-01
Classification: B82Y,G02B,H01L,H01S

Abstract:
1. An optical semiconductor apparatus constituting an optical signal transmitter-receiver of a bidirectional communication system employing a single-core fiber, comprising, a surface-emitting semiconductor laser device and a light-receiving device; wherein the surface-emitting semiconductor laser device and the light-receiving device are disposed on a common substrate; wherein the surface-emitting semiconductor laser device functions as a light signal transmitting device, has a columnar layered structure, and has a light emerging surface on the columnar layered structure; wherein the light-receiving device functions as a light signal receiving device, has an annular layered structure around the surface-emitting semiconductor laser device with an isolation region interposed there between, and has the annular light-receiving surface and the columnar light-emerging surface lying at the same level; wherein the diameter of the light-receiving device is smaller than that of an optical fiber core optically coupled with the optical semiconductor apparatus.