US Patent Issued to NEC on Dec. 30 for "Path switching device, optical transmission system, and path switching method" (Japanese Inventor)

ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,513,439, issued on Dec. 30, was assigned to NEC Corp. (Tokyo).

"Path switching device, optical transmission system, and path switching method" was invented by Akira Masuda (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a path switching device including a wavelength separator that wavelength-separates signal light and monitoring light having a wavelength different from a wavelength of the signal light, a signal light path switcher that switches a path of the signal light, and a monitoring light path controller that controls a path of the monitoring light, wherein the monitoring light path controller sets a path of the monitoring light ...