ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,535,639, issued on Jan. 27, was assigned to Twinstar Technologies Co. Ltd. (Shanghai).
"Optical MUX/DEMUX assembly" was invented by Jinxi Shen (San Ramon, Calif.), Wei Hou (Shanghai) and Bin Xu (Shanghai).
According to the abstract* released by the U.S. Patent & Trademark Office: "An optical assembly for demultiplexing wavelength channels includes a retro-reflecting Z-block of optically transmissive material having a port facing face and a back face. An optical port assembly including an array of channel ports and a common port is proximate to the port facing face. An array of optical filters is located along the port facing face in an optical alignment with respective optical ports....