ALEXANDRIA, Va., Oct. 6 -- United States Patent no. 12,754,364, issued on Oct. 6, was assigned to Intel Corp. (Santa Clara, Calif.).

"Technologies for optical demultiplexing with backwards compatibility" was invented by Wenhua Lin (Fremont, Calif.), Saeed Fathololoumi (Los Gatos, Calif.), Pegah Seddighian (San Jose, Calif.), Tiehui Su (San Jose, Calif.) and David Chak Wang Hui (Santa Clara, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "In one embodiment, a silicon photonic integrated circuit (PIC) includes a pair of Mach-Zehnder Interferometers (MZI) with a phase shifter to function as a 1x2 optical switches. On one path between the MZIs is a wavelength interleaver. The MZI switch can be controlled t...