ALEXANDRIA, Va., June 25 -- United States Patent no. 12,339,498, issued on June 24, was assigned to Rheinisch-Westfalische Technische Hochschule (RWTH) Aachen (Germany).

"Optical coupler comprising a molded optical interposer together with a PIC and 2 polarization selective elements enabling isolation and/or polarization management" was invented by Jeremy Witzens (Cologne, Germany) and Florian Merget (Wurselen, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention describes an apparatus that implements efficient coupling between a photonic integrated circuit (PIC) and a second optical element such as a fiber or laser, while at the same time allowing for efficient polarization management and/or...