Patent ID: 6916122

Claim:
An opto-electronic device of the type for transmitting signals between an optical waveguide and a host computer comprising: an optical sub-assembly for converting optical signals into electrical signals or electrical signals into optical signals; a thermally conductive housing for supporting the optical sub-assembly; an optical connector on one end of said housing for receiving the optical waveguide, and for aligning the optical waveguide with the optical sub-assembly; a printed circuit board mounted in said housing including circuitry for controlling the optical sub-assembly, the printed circuit board including a first heat source; and an electrical connector extending from another end of said housing for transmitting electrical signals between the printed circuit board and the host computer; wherein the housing includes: a lower portion for supporting the optical sub-assembly and the printed circuit board; a heat dissipating cover fixed on top of the lower portion for dissipating heat from inside the housing; and a first heat sink mounted on the heat dissipating cover above the first beat source for dissipating heat therefrom; wherein the heat dissipating cover or the first heat sink enclose and seal, the housing to prevent leakage of electro-magnetic interference (EMI) from the housing; wherein the first heat sink includes heat dissipating projections extending therefrom; and wherein the heat dissipating cover includes heat dissipating projections extending therefrom.