ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,731,953, issued on Sept. 8, was assigned to II-VI DELAWARE INC. (Wilmington, Del.).

"Pump modulation for optical amplifier link communication" was invented by Aravanan Gurusami (Morgan Hill, Calif.), Deepak Devicharan (Horseheads, N.Y.), Timothy K. Zahnley (Savona, N.Y.) and Martin R. Williams (Big Flats, N.Y.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system for communicating supervisory information between amplifier nodes in an optical communication network utilizes modulation of an included pump source to superimpose the supervisory information on data signals (typically customer data signals) propagating between the amplifier nodes transmitted...