OPTICAL COUPLING DEVICE

摘要

According to embodiments of the present invention, an optical coupling device comprises: an optical fiber block comprising a first block unit and a second block unit in contact with one side of the first block unit; optical fiber penetrating the optical fiber block, wherein an end surface thereof is exposed on a lower surface of the optical fiber bock; a semiconductor chip which is arranged below the optical fiber block and has an optical input/output element arranged to correspond to the end surface of the optical fiber; and a flattening layer which is arranged on the semiconductor chip and has a recess area. A lower surface of the first block unit has a higher level than a lower surface of the second block unit based on a lower surface of the semiconductor chip. The lower surface of the second block unit comes in contact with a bottom surface of the recess area. The optical fiber can be optically coupled to the optical input/output element.