US Patent 11567273 Optical fiber-to-chip interconnection

Provided is a connector assembly for optically connecting one or more optical fibers and an array of vertical coupling elements of a photonic integrated circuit (PIC). In various embodiments, the connector assembly is constructed to independently optically scale some feature sizes, such as, for example, the transverse mode size, the array size, the array geometry, and/or various incidence angles, the optical scaling being performed, e.g., from a fiber end face plane to a connector-mating plane and further to a PIC coupling plane. In some embodiments, the connector assembly may support a polarization (de)multiplexing functionality.