Abstract: Apparatus for cooling an electro-optical (EO) device, the apparatus includes (i) a housing configured to encapsulate components of the EO device, including: a first portion including a substrate for supporting the components, and a second portion configured to connect with the first portion, the second portion having opening facing the components and shelf surrounding the opening, and (ii) a cooling assembly, includes a base plate configured to be removably fitted in the opening of the second portion, array of multiple c-shaped elements arranged in a face-to-back configuration on a first surface of the base plate, and a second surface of the base plate opposite the first surface, the second surface configured to face the components when the base plate is fitted in the opening, the base plate configured to transfer heat between the components and the c-shaped elements and has higher thermal conductivity than the second portion of the housing.

Abstract: A transceiver includes, (a) a communication circuit, which is configured to exchange signals between a cable and a communication unit when the transceiver is connected to the communication unit, and (b) a housing, including: (i) a first shell including a substrate having the communication circuit disposed thereon, (ii) a second shell, which is configured to connect with the first shell for encapsulating the communication circuit, the second shell has an opening facing the communication circuit, and (iii) a base plate, which is fitted in the opening and including a first surface having one or more cooling fins formed thereon, and a second surface, opposite the first surface that is facing the communication circuit, the base plate is configured to transfer heat between the communication circuit and the cooling fins.

Abstract: A pluggable network interface device includes a printed circuit board (“PCB”), a housing, and a heatsink. The heatsink includes a first surface and a second surface, disposed opposite the first surface, that is maintained in direct contact with a surface of a heat-generating circuit of the PCB. The housing includes an outer shell defining an exterior of the housing, a receiving cavity disposed inside the outer shell, and an aperture extending through a first side of the outer shell from the exterior of the housing into the receiving cavity. A portion of the PCB and the second surface of the heatsink are disposed inside the receiving cavity while a portion of the heatsink extends from within the receiving cavity through the aperture arranging the first surface of the heatsink adjacent the exterior of the housing.

Abstract: A transceiver includes, (a) a communication circuit, which is configured to exchange signals between a cable and a communication unit when the transceiver is connected to the communication unit, and (b) a housing, including: (i) a first shell including a substrate having the communication circuit disposed thereon, (ii) a second shell, which is configured to connect with the first shell for encapsulating the communication circuit, the second shell has an opening facing the communication circuit, and (iii) a base plate, which is fitted in the opening and including a first surface having one or more cooling fins formed thereon, and a second surface, opposite the first surface that is facing the communication circuit, the base plate is configured to transfer heat between the communication circuit and the cooling fins.