US Patent Issued to FURUKAWA ELECTRIC on Sept. 15 for "Optical amplifying fiber, optical fiber amplifier, and optical communication system" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,738,707, issued on Sept. 15, was assigned to FURUKAWA ELECTRIC Co. LTD. (Tokyo).

"Optical amplifying fiber, optical fiber amplifier, and optical communication system" was invented by Shigehiro Takasaka (Tokyo), Koichi Maeda (Tokyo), Keiichi Aiso (Tokyo), Shinichi Arai (Tokyo), Ryuichi Sugizaki (Tokyo), Kazunori Mukasa (Tokyo), Yukihiro Tsuchida (Tokyo) and Masanori Takahashi (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical amplifying fiber includes: at least one single core portion doped with a rare-earth element; an inner cladding portion configured to enclose the at least one core portion, the inner cladding portion having a lower ref...