ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,431,983, issued on Sept. 30, was assigned to Infinera Corp..

"Perturbative-based nonlinear compensation for digital subcarrier systems" was invented by Mohamed Osman (Ottawa), Demin Yao (Ottawa), Domanic Lavery (Ottawa), Han Henry Sun (Ottawa) and Pierre Mertz (Baltimore).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods, systems, and apparatus, including computer programs encoded on computer storage media, for applying non-linearity to digital subcarriers. A receiver includes a detector circuit operable to receive a first optical signal over an optical link, the first optical signal carrying first data. The receiver includes a carrier recovery est...