US Patent Issued to Mitsubishi Electric on Nov. 3 for "Optical semiconductor device" (Japanese Inventors)

ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,785,356, issued on Nov. 3, was assigned to Mitsubishi Electric Corp. (Tokyo).

"Optical semiconductor device" was invented by Koichi Nakamura (Tokyo) and Keita Mochizuki (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical semiconductor device comprises a semiconductor laser mounted on a bottom portion of a package, a receiving unit that receives a signal light from an outside using local oscillator light output from the laser, and a receiving-unit-mounted substrate on which the receiving unit including a semiconductor light receiving element is mounted. The receiving unit is disposed on a surface on the side opposite to the laser. The light r...