US Patent Issued to Taiwan Semiconductor Manufacturing on March 3 for "High alignment tolerance edge coupler" (Taiwanese, American Inventors)

ALEXANDRIA, Va., March 3 -- United States Patent no. 12,566,293, issued on March 3, was assigned to Taiwan Semiconductor Manufacturing Co. Ltd. (Hsinchu, Taiwan).

"High alignment tolerance edge coupler" was invented by Hau-Yan Lu (Hsinchu City, Taiwan), Wei-Kang Liu (Taichung City, Taiwan) and Yingkit Felix Tsui (Cupertino, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An edge coupler has a wide end, a narrow end, and a tapering thickness. The narrow end is coupled to a waveguide in a photonic integrated circuit (PIC). The wide end is coupled to an optical transmitter or receiver. The edge coupler thickens by tapering downward into the buried oxide layer of a BOX substrate. An upper surface of the ed...