ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,431,692, issued on Sept. 30, was assigned to Lumentum Operations LLC (San Jose, Calif.).

"Multi-wavelength laser diode" was invented by Martin H. Muendel (Oakland, Calif.), Victor Rossin (Mountain View, Calif.), James J. Morehead (Oakland, Calif.) and John G. Bai (Cupertino, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "In some implementations, an optical device (e.g., a monolithic master oscillator power amplifier (MOPA) diode) may include a first facet, one or more gratings, an amplifier structure terminated with a second facet, and an oscillator array that includes multiple singlemode oscillators coupled to the first facet and to the one or ...