ALEXANDRIA, Va., June 5 -- United States Patent no. 12,276,833, issued on April 15, was assigned to Ayar Labs Inc. (San Jose, Calif.).

"Multi-strip-loaded optical waveguide" was invented by Manan Raval (Oakland, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A strip-loaded optical waveguide includes a slab layer, a strip layer, and a cladding region. The slab layer has a first optical refractive index and a first width measured in a transverse direction that is perpendicular to a light propagation direction through the strip-loaded optical waveguide. The strip layer is disposed above the slab layer. The strip layer has a second optical refractive index and a second width as measured the transverse dir...