ALEXANDRIA, Va., July 15 -- United States Patent no. 12,663,586, issued on June 23, was assigned to President and Fellows of Harvard College (Cambridge, Mass.).

"Electromagnetic waveguides using cascaded mode conversion" was invented by Vincent Ginis (Cambridge, Mass.), Marco Piccardo (Cambridge, Mass.), Michele Tamagnone (Cambridge, Mass.) and Federico Capasso (Cambridge, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A device includes a first mode converter and a second mode converter that define a region between the first mode converter and the second mode converter. The region can contain a plurality of optical modes including at least three modes. The first mode converter and the second mode conve...