ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,413,299, issued on Sept. 9, was assigned to VIAVI SOLUTIONS INC. (Chandler, Ariz.).

"High speed bidirectional test of dual-fiber link" was invented by Julien Barrier (Saint Jean Bonnefonds, France) and Olivier Receveur (Saint Marcellin en Forez, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "In some examples, high speed bidirectional test of dual-fiber link may include providing at least one optical time-domain reflectometer (OTDR) and at least one optical data transceiver. At least one mxn optical switch may be optically connected to the at least one OTDR, the at least one optical data transceiver, and at least two fibers of a cable under test....