ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,730,352, issued on Sept. 8, was assigned to Fujikura Ltd. (Tokyo).
"Optical switch and switching method" was invented by Yuichiro Kunai (Tokyo), Hiroyuki Kusaka (Tokyo) and Masahiro Kashiwagi (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "An optical switch that switches an optical path of signal light obtained by modulating carrier light by a control signal and a data signal includes a mirror and a half mirror, an optical modulation element that reflects or refracts the signal light reflected by the mirror and the half mirror and includes cells each having an independently set phase modulation amount, a light detector that detects, at once, inten...