US Patent Issued to SUMITOMO ELECTRIC INDUSTRIES on July 15 for "Optical amplifier and optical communication system" (Japanese Inventor)

ALEXANDRIA, Va., July 16 -- United States Patent no. 12,362,530, issued on July 15, was assigned to SUMITOMO ELECTRIC INDUSTRIES LTD. (Osaka, Japan).

"Optical amplifier and optical communication system" was invented by Takafumi Ohtsuka (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical amplifier includes one or more rare earth element-doped optical fibers each including one or more cores, two or more excitation light sources per single core of the one or more rare earth element-doped optical fibers, configured to emit excitation light for exciting a rare earth element added to the one or more rare earth element-doped optical fibers according to a driving current, and a synthesizing part ...