US Patent Issued to Mitsubishi Electric on June 23 for "Optical semiconductor device" (Japanese Inventors)

ALEXANDRIA, Va., July 15 -- United States Patent no. 12,665,378, issued on June 23, was assigned to Mitsubishi Electric Corp. (Tokyo).

"Optical semiconductor device" was invented by Ryosuke Nagao (Tokyo), Keita Mochizuki (Tokyo) and Takashi Nagira (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical semiconductor device according to the present disclosure includes a semiconductor substrate, at least one semiconductor laser provided on the semiconductor substrate, an optical multiplexer/demultiplexer circuit provided on the semiconductor substrate, multiplexing or demultiplexing first output light of the semiconductor laser and outputting second output light and third output light, a first wavegui...