Patent ID: 8351794

Claim:
A parallel optical transceiver module comprising: an electrical subassembly (ESA) comprising a circuit board, a leadframe secured to the circuit board, at least one integrated circuit (IC) mounted on an upper surface of the leadframe, and a plurality of active optical devices mounted on the upper surface of the leadframe, the ESA having one or more alignment and interlocking features thereon; an optical subassembly (OSA) mechanically coupled with the ESA, the OSA having a plurality of optical elements for directing optical signals between ends of a plurality of optical fibers and the active optical devices mounted on the upper surface of the leadframe, the OSA having one or more alignment and interlocking features configured to be aligned and interlocked with the alignment and interlocking features of the ESA to enable the OSA and the ESA to be mechanically coupled with one another; and a heat dissipation system mechanical coupled to the OSA, the heat dissipation system comprising a material of high thermal conductivity, the heat dissipation system comprising at least first and second heat blocks, the first and second heat blocks having respective mating features that mate with respective mating features of the OSA to mechanically couple the first and second heat blocks to first and second sides, respectively, of the OSA, wherein the first and second heat blocks have lower surfaces that are thermally coupled with the upper surface of the leadframe of the ESA, and wherein the first and second heat blocks have upper surfaces that are disposed above an upper surface of the OSA and are open and uncovered to enable the upper surfaces of the heat blocks to be thermally coupled with a heat dissipation system that is external to the parallel optical transceiver module to enable heat that is transferred from the leadframe into the heat dissipation system of the parallel optical transceiver module to be transferred into the external heat dissipation system, and wherein the mechanical coupling together of the ESA and the OSA and the mechanical coupling together of the heat dissipation system and the OSA provide an encapsulation for said plurality of active optical devices and said at least one IC that protects said plurality of active optical devices and said at least one IC from particulates and mechanical handling forces.