Light-receiving element and light receiving circuit

An optical receiving circuit comprising:

• a sub-carrier having a metalized surface;
• a light receiving element on the sub-carrier having
• a light receiving area for an optical signal,
• an anode electrode pad being connected to an anode of the light receiving area,
• a cathode electrode pad being connected to a cathode of the light receiving area constituted on one surface of the substrate, the light receiving area, the anode electrode pad and the cathode electrode pad being formed on one surface of a substrate, and
• a ground pattern being formed outside an opening region on an opposite surface of the substrate, the opening region being located at a position corresponding to the light receiving area;
• and
• a transimpedance amplifier having
• a signal pad being electrically connected to the anode electrode pad, and
• a ground pad being electrically connected to a metallized ground surface of the sub-carrier,
• wherein a signal current flows from the cathode electrode pad to the signal input pad, while a return current flows through a path including the ground pattern from the ground pad.