US Patent Issued to NEC on May 5 for "Relaying apparatus including a fiber sensing system for submarine use" (Japanese Inventors)

ALEXANDRIA, Va., May 5 -- United States Patent no. 12,618,993, issued on May 5, was assigned to NEC Corp. (Tokyo).

"Relaying apparatus including a fiber sensing system for submarine use" was invented by Masafumi Emura (Tokyo), Yuta Sawai (Tokyo), Hiroki Tanaka (Tokyo) and Minoru Kobayashi (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A fiber sensing system according to the present disclosure includes a submarine cable, and a plurality of relaying apparatuses being connected in series to one another via the submarine cable. The relaying apparatus includes a DAS interrogator being connected to a relaying apparatus at a subsequent stage via a sensing optical fiber in the submarine cable, and a terminato...