ALEXANDRIA, Va., June 25 -- United States Patent no. 12,339,493, issued on June 24, was assigned to University of Southampton (Hampshire, Great Britain).

"Photonic chip and method of manufacture" was invented by David Thomson (Southampton, Great Britain), Graham Reed (Southampton, Great Britain), Wei Wei Zhang (Southampton, Great Britain) and Martin Ebert (Southampton, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention provides a photonic chip comprising: a silicon substrate, an low refractive index layer above the silicon substrate, and a tapered waveguide above the low refractive index layer, the tapered waveguide having a first height at a first end of the tapered waveguide and a s...