Patent ID: 8891975

Claim:
An optical receiver comprising: a board configured to be coupled with an optical transmission line array, the optical transmission line array including a plurality of optical transmission lines; an optical diode array disposed on the board, the optical diode array including a plurality of photo diodes, each of the plurality of photo diodes receiving light from a corresponding one of the plurality of optical transmission lines, each of the plurality of photo diodes including a first electrode and a second electrode; a plurality of bias suppliers, each of the plurality of bias suppliers being configured to apply a bias voltage to the first electrode of a corresponding one of the plurality of photo diodes; a plurality of conversion circuits, each of the plurality of conversion circuits being configured to convert a current signal flowing through the second electrode of the corresponding one of the plurality of photo diodes into a voltage signal and to output the voltage signal; and a plurality of capacitors, each of the plurality of capacitors having a first end and a second end, the first end being coupled to the first electrode of the corresponding one of the photo diodes, the second end being electrically grounded, wherein each one of the plurality of photo diodes includes: a first pad coupled with the first electrode and the bias supplier, a second pad coupled with the second electrode and the conversion circuit, and a third pad coupled with the first pad and the capacitor, wherein the first and second pads are formed in a vicinity of a first end of the photo diode array, the third pad is formed in a vicinity of a second end of the photo diode array, and the first end and the second end are opposite ends with respect to one another.