The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 26, 2026
Filed:
Aug. 19, 2022
Mimopt Technology, Paris, FR;
Ghaya Rekaya, Antony, FR;
Akram Abouseif, Paris, FR;
MIMOPT TECHNOLOGY, Paris, FR;
Abstract
The present invention relates to a method for dual-polarisation SDM 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 (). A first orthogonal linear transformation (-) is applied to the vector of the real values thus obtained and a second orthogonal linear transformation (-), separate from the first, is applied to the vector of the imaginary values thus obtained. A complex scalar solving an irreducible polynome of[X] inis multiplied with the first or second transformed vector before the two transformed vectors are summed () in order to provide a vector of transmission symbols for modulating the different states of polarisation of the spatial elementary channels.