US Patent Issued to MITSUBISHI ELECTRIC on June 23 for "Planar waveguide amplifier and laser radar device" (Japanese Inventors)

ALEXANDRIA, Va., July 15 -- United States Patent no. 12,665,374, issued on June 23, was assigned to MITSUBISHI ELECTRIC Corp. (Tokyo).

"Planar waveguide amplifier and laser radar device" was invented by Kenichi Hirosawa (Tokyo), Narito Samejima (Tokyo) and Kenichi Uto (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A planar waveguide amplifier includes a planar waveguide including a flat plate-like core; a first cladding provided on a first principal face of the core; and a second cladding provided on a second principal face of the core, and signal light and pumping light travel into the planar waveguide so that the signal light and the pumping light propagate inside the core in such a manner that opti...