Patent ID: 9703056
Date: 2017-07-11
CPC Classifications: G02B,H01L

Claim:
1. A method for fabricating an electro-optical interconnect comprising: providing a first substrate in which an optical circuit element is formed; forming an interconnect structure on the first substrate comprising one or more metallic conductor layers formed in one or more interlevel dielectric layers and an optically transparent layer located over the optical circuit element; and forming a first conductive interconnect structure on the interconnect structure with one or more conductive layers formed around a central opening in the first conductive interconnect structure which is located over the optically transparent layer, where the first conductive interconnect structure is electrically connected to one or more circuits formed in the first substrate to provide an electrical signal path, and where the central opening in the first conductive interconnect structure and optically transparent layer are optically coupled to the optical circuit element formed in the first substrate to provide an optical signal path; where forming the first conductive interconnect structure comprises: