US Patent Issued to Cisco Technology on Sept. 8 for "Inverted slab-coupled optical waveguide" (California, Pennsylvania Inventors)

ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,731,964, issued on Sept. 8, was assigned to Cisco Technology Inc. (San Jose, Calif.).

"Inverted slab-coupled optical waveguide" was invented by Dominic F. Siriani (Lansdale, Pa.) and Kenneth J. Thomson (San Francisco).

According to the abstract* released by the U.S. Patent & Trademark Office: "The structures and methods described include an inverted slab-coupled optical waveguide (SCOW) structure, which inverts the polarity of a typical SCOW diode and includes an active region located at an inverted side of the slab section of the inverted SCOW. The inverted SCOWs provide for easily adjustable optical mode confinement or overlap in an active region/gain medium without the risks of ge...