Patent ID: 7894726

Claim:
An optical receiver module comprising: a semiconductor chip on which is formed a photodiode for converting an optical signal into an electrical signal; a carrier substrate for mounting said semiconductor chip; a preamplifier for amplifying said electrical signal; and a semiconductor mounting position having a pair of first electrodes formed on the carrier substrate, wherein said carrier substrate is composed of a dielectric material, wherein a capacitance between said pair of first electrodes of the carrier substrate is greater than or equal to 40 fF prior to mounting the semiconductor chip, wherein on said semiconductor chip is formed an anode electrode and a cathode electrode which are connected to the photodiode and the semiconductor chip is mounted on the semiconductor mounting position such that the anode electrode and cathode electrode are connected to the pair of first electrodes, wherein a capacitance between said anode electrode and said cathode electrode is less than or equal to 100 fF prior to mounting to the carrier substrate, and wherein said optical receiver is operated with a bit rate of approximately 10 Gbits/s.