ALEXANDRIA, Va., June 19 -- United States Patent no. 12,335,029, issued on June 17, was assigned to SiFotonics Technologies (Beijing) Co. Ltd. (Beijing).

"Coherent light receiving optical device" was invented by Fan Qi (Beijing), Chang Liu (Beijing), Zhou Fang (Beijing) and Pengfei Cai (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides a coherent light receiving optical device. It includes: an optical switch group, each optical switch thereof is configured to switch between two different preset bands and output two signal lights or two oscillation lights corresponding to the two different preset bands; a 1x2 power beam splitter group, each 1x2 power beam splitter thereof ...