US Patent Issued to MIMOPT TECHNOLOGY on March 24 for "I/Q coding method for WDM communication system over optical fibre" (French Inventors)

ALEXANDRIA, Va., March 24 -- United States Patent no. 12,587,302, issued on March 24, was assigned to MIMOPT TECHNOLOGY (Paris).

"I/Q coding method for WDM communication system over optical fibre" was invented by Ghaya Rekaya (Antony, France) and Akram Abouseif (Paris).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a method for dual-polarisation WDM transmission over optical fibre. The transmission method uses specific I/Q coding for combating the effects of PDL. The modulation symbols to be transmitted on the 2N polarisation states of the N wavelengths are broken down into real values and imaginary values (220). A first orthogonal linear transformation (230-1) is applied to t...