US Patent Issued to MITSUBISHI ELECTRIC on Feb. 17 for "Coherent optical receiver" (French Inventor)

ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,556,286, issued on Feb. 17, was assigned to MITSUBISHI ELECTRIC Corp. (Tokyo).

"Coherent optical receiver" was invented by Gwillerm Froc (Rennes, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "A coherent optical receiver comprises a local oscillator, a polarization-diversity actuator configured for modifying an optical signal output by the local oscillator and a 2x2 coupler for coupling the optical signal output by the polarization-diversity actuator and a modulated optical signal received from a coherent optical transmitter. The local oscillator thus provides a boosting effect to the amplitude-shift keying modulated optical signal. The coherent ...