US Patent No. 10,433,447

INTERCONNECT STRUCTURE FOR COUPLING AN ELECTRONIC UNIT AND AN OPTICAL UNIT, AND OPTOELECTRONIC MODULE


Patent No. 10,433,447
Issue Date October 01, 2019
Title Interconnect Structure For Coupling An Electronic Unit And An Optical Unit, And Optoelectronic Module
Inventorship Andrei Kaikkonen, Jaerfaella (SE)
Lennart Per Olof Lundqvist, Jaerfaella (SE)
Lars-Goete Svensson, Vallentuna (SE)
Peter Lindberg, Uppsala (SE)
Assignee Finisar Corporation, Sunnyvale, CA (US)

Claim of US Patent No. 10,433,447

1. An optoelectronic module, comprising:a driver circuit configured to output and/or receive an electrical signal;
a laser configured to convert the electrical signal into an optical signal;
an interconnect structure connecting the driver circuit and the laser, the interconnect structure comprising an electrically conductive substrate and a pair of transmission leads connecting the driver circuit and the laser and having a signal lead and a ground lead having lower impedance than the signal lead; and
a ground plane layer underlying the ground lead, wherein the ground lead is electrically coupled to the ground plane layer;
wherein an impedance of the signal lead is defined by its width and a distance to the ground plane layer, and the ground lead has a width that is larger than a width of the signal lead.