ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,411,162, issued on Sept. 9, was assigned to BRITISH TELECOMMUNICATIONS PLC (London).

"Electromagnetic field detector" was invented by Fraser Burton (London), Marco Menchetti (London), Liam Bussey (London) and Amelia Lees (London).

According to the abstract* released by the U.S. Patent & Trademark Office: "This invention provides an electromagnetic field detector, a system comprising the electromagnetic field detector, and a method of operating an electromagnetic field detector, the electromagnetic field detector comprising a first optical signal interface configured to receive, from one or more remote optical sources, a first optical signal; an electromagnetic field transmitter conf...