ALEXANDRIA, Va., March 31 -- United States Patent no. 12,590,865, issued on March 31, was assigned to LUNA INNOVATIONS Inc. (Roanoke, Va.).

"Measuring fiber insertion losses in an optical fiber sensing system" was invented by Joel Leslie Mock (Roanoke, Va.), Stephen Tod Kreger (Roanoke, Va.) and Justin Lee Stay (Roanoke, Va.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical fiber has at least one optical sensor with at least two interconnects with associated insertion losses. A first optical sensing interrogator is coupled through an interconnect to one end of the optical fiber with the sensors, and a second optical sensing interrogator is coupled through an interconnect to an opposite end of the opt...