An optical apparatus having a vertical light receiving element is disclosed.
The
optical apparatus is configured to couple light generated from a light source using
the vertical light receiving element, then transforms the received light signals
into an electric signal. The optical apparatus includes: a vertical photo detector
having a photo-absorption layer; and an optical bench on which the photo detector
is disposed. The optical bench having a first groove and a second groove formed
adjacent to each other, the first groove having a predetermined inclination and
being formed at an edge of a first surface of the optical bench, and the first
surface being opposite to a second surface of the optical bench, on which the photo
detector is disposed, such that a light signal incident to the first groove is
refracted at a predetermined angle by the first groove; and the light signal, which
has been refracted by the first groove, is totally reflected by the second groove.
As a result, that the light signal is substantially and vertically incident into
the photo-absorption layer.
