Patent ID: 9235015
Filing Date: 2016-01-12
CPC Classification: G02B

Claim Text:
1. An optical communications module comprising: an electrical subassembly (ESA) comprising a first circuit board having at least an upper surface and a bottom surface, at least a first electrical component mounted on the upper surface of the first circuit board, and at least a first optoelectronic component mounted on the upper surface of the first circuit board, wherein at least one of the first electrical component and the first optoelectronic component constitutes at least a first heat source; an optical subassembly (OSA), the OSA comprising a plurality of optical elements for optically coupling optical signals between an end of at least one optical fiber of the optical communications module and the first optoelectronic device, the OSA having at least a top surface and a bottom surface with a ridge formed on a peripheral portion of the bottom surface extending away from the bottom surface, wherein a bottom surface of the ridge contacts the upper surface of the first circuit board of the ESA to mechanically couple the OSA with the ESA, the OSA also having a void formed therein that extends through the top and bottom surfaces of the OSA; and a heat dissipation block disposed in the void of the OSA, the heat dissipation block comprising a material of high thermal conductivity and having at least a top surface and a bottom surface, wherein the ridge on the bottom surface of the OSA is dimensioned to hold the bottom surface of the heat dissipation block spaced apart from a top surface of the first heat source by a predetermined distance to form an air gap.