Patent ID: 8280203
Filing Date: 2012-10-02
Classification: G02B

Abstract:
1. A parallel optical communications device comprising: a substrate; an electrical subassembly (ESA) mounted on the substrate, the ESA including a metal mounting device having at least an upper surface and a lower surface, the upper surface of the metal mounting device having at least one integrated circuit (IC) and a plurality of active optical devices mounted thereon, said at least one IC being electrically coupled to the active optical devices, said at least one IC being electrically coupled to electrical conductors of the substrate, the metal mounting device having at least one slot formed in the upper surface of the metal mounting device and at least one metal weldable ESA insert fixedly secured to said at least one slot; an optical subassembly (OSA) mechanically coupled to the ESA, the OSA including at least one metal heat dissipation block secured thereto, said at least one metal heat dissipation block comprising a metallic material having a high thermal conductivity, said at least one metal heat dissipation block having at least one slot formed therein in a lower surface of said at least one metal heat dissipation block and at least one metal weldable OSA insert fixedly secured to said at least one slot formed in the lower surface of said at least one metal heat dissipation block, the lower surface of said at least one metal heat dissipation block being in at least partial contact with the upper surface of the metal mounting device such that the metal weldable OSA and ESA inserts are at least partially in contact with one another; and wherein said at least one metal weldable ESA insert and said at least one metal weldable OSA insert are welded together to form at least one welded joint between the OSA and the ESA where the metal weldable ESA and OSA inserts have been fused together, and wherein said at least one welded joint is structurally very strong to prevent relative movement from occurring between the OSA and the ESA.