ALEXANDRIA, Va., June 12 -- United States Patent no. 12,298,558, issued on May 13, was assigned to Taiwan Semiconductor Manufacturing Co. Ltd. (Hsinchu, Taiwan).

"Optical isolator integrated with optical devices" was invented by Cheng-Tse Tang (Hsinchu, Taiwan) and Chewn-Pu Jou (Hsinchu, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A device includes an optical isolator disposed between adjacent optical waveguides along a direction. The optical isolator has vertical or horizontal dimensions that are different than at least one of the optical waveguides. The vertical and horizontal dimensions are greater than vertical and horizontal dimensions of at least one of the waveguides. In various embodiments,...