ALEXANDRIA, Va., Aug. 18 -- United States Patent no. 12,710,589, issued on Aug. 18, was assigned to XANADU QUANTUM TECHNOLOGIES INC. (Toronto).

"Methods and apparatus for optical coupler" was invented by Inna Krasnokutska (Toronto) and Blair Morrison (Toronto).

According to the abstract* released by the U.S. Patent & Trademark Office: "There is described an adiabatic edge coupler comprising two coupled waveguides. A first waveguide extends from a tip width to a terminal width. A second waveguide comprises a first tapered portion that extends from a tip width to an intermediate width, and a second tapered portion that extends from the intermediate width to a terminal width. Upon receipt of an input optical signal, a coupled mode is formed ...