US Patent 11327256 Optical receiver module and package for optical receiver module

A package for optical receiver module includes a conductive housing and a feedthrough. The conductive housing includes a first sidewall having an optical port for receiving an optical signal along an optical axis, a second sidewall separated from the first sidewall along the optical axis, and an interior space for housing a photodetector. The feedthrough includes first to third layers extending from the second sidewall to an opposite direction of the first sidewall, and the third layer is provided between the first and second layers. The feedthrough includes first to fourth wirings, a grounding wiring, and a plurality of first conductive cells. The first and second wirings face the interior space. The third wirings, the fourth wiring, the grounding wiring are formed in the first layer or the second layer. The plurality of first conductive cells are arranged in the third layer, and are electrically connected to the grounding wiring.