公开(公告)号：US20170264367A1

公开(公告)日：2017-09-14

申请号：US15508775

申请日：2015-09-04

Applicant: INSTITUT MINES-TELECOM

Inventor： Elie AWWAD ,  Ghaya REKAYA-BEN OTHMAN ,  Yves JAOUEN

IPC: H04B10/2581 ,  H04B7/0413 ,  H04B10/079

CPC classification number: H04B10/2581 ,  H04B7/0413 ,  H04B10/0795 ,  H04J14/04

Abstract: The invention relates to a mode selection method for a system for MIMO transmission on an optical fiber of multimode type. It comprises a step of measuring the transfer matrix of the transmission channel made up of a set of modes of the optical fiber (110), a step of transforming (120) the transfer matrix into a block diagonal matrix, each block being associated with a mode subset, a step of determining (130) the gain and/or the transmission capacity for each of the mode subsets, and a selection (140) of the mode subset corresponding to the highest gain and/or capacity, the MIMO transmission system then using only the modes of the subset thus selected to transmit on the optical fiber.The invention relates also to a core selection method for a system for MIMO transmission on optical fiber of multicore type.

公开(公告)号：US20170195052A1

公开(公告)日：2017-07-06

申请号：US15322612

申请日：2015-06-26

Applicant: INSTITUT MINES-TELECOM

Inventor： Elie AWWAD ,  Ghaya REKAYA-BEN OTHMAN ,  Yves JAOUEN

IPC: H04B10/2581

CPC classification number: H04B10/2581 ,  H04B10/2507 ,  H04J14/04

Abstract: The invention relates to a system and a method for transmission over optical fiber (130) with mode or core scrambling. The system comprises a spatio-temporal encoder (110) and a plurality of modulators (1251, . . . , 125n) associated, respectively, with separate propagation modes or cores of said fiber, each modulator modulating a laser beam. Said fiber comprises a plurality of slices (1301, . . . , 130L), an amplifier (140l) being provided between any two consecutive slices of the optical fiber. A mode scrambler (150l) is associated with each amplifier in order to perform a permutation of said modes between at least two consecutive slices.