ALEXANDRIA, Va., April 2 -- United States Patent no. 12,265,263, issued on April 1, was assigned to Ayar Labs Inc. (San Jose, Calif.).
"Dual-polarization grating coupler" was invented by John Fini (Albany, Calif.) and Uma Krishnamoorthy (Santa Clara, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An optical grating coupler includes a primary layer formed of a material having a first refractive index. A first plurality of scattering elements is formed within the primary layer. The first plurality of scattering elements has a second refractive index that is different than the first refractive index. A secondary layer is formed over the primary layer. The secondary layer is formed of a material having a ...