ALEXANDRIA, Va., July 14 -- United States Patent no. 12,683,707, issued on July 14, was assigned to TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD. (Hsinchu, Taiwan).

"WDM channel reassignment" was invented by Chih-Chang Lin (San Jose, Calif.), Chan-Hong Chern (Palo Alto, Calif.), Stefan Rusu (Sunnyvale, Calif.), Weiwei Song (San Jose, Calif.) and Lan-Chou Cho (Hsinchu City, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical device includes a first waveguide, ring-shaped waveguides adjacent to the first waveguide, and heaters coupled to the ring-shaped waveguides in one-to-one correspondence. A method includes coupling a first light source with a first wavelength to the first waveguide, increas...