Patent ID: 7073959

Claim:
An optical receiver module with a top open can (TO-Can) structure including a stem with holes thereon, the holes passing through both sides of the stem, and a photo diode mounted on an upper side of the stem, for converting an optical input signal into an electric current, comprising: a trans-impedance amplifier mounted on an upper side of the stem, for converting and amplifying the electric current output from the photo diode into radio frequency (RF) signals having opposite phases, and outputting the amplified RF signals to the outside via corresponding output terminals; signal leads passing through the holes formed on the stem, for outputting the RF signals having the opposite phases amplified by the trans-impedance amplifier to the outside; ground leads extending from the stem, for grounding the stem to the outside of the optical receiver module; and waveguides mounted in a predetermined position on an upper side of the stem in order to match impedance between the trans-impedance amplifier and the leads, the waveguides conducting the RF signals output from the output terminals of the trans-impedance amplifier to the respective leads via corresponding electric paths.