公开(公告)号：US10193619B2

公开(公告)日：2019-01-29

申请号：US15762386

申请日：2016-09-22

Applicant: ASTON UNIVERSITY

Inventor： Filipe Ferreira ,  Andrew Ellis ,  Naoise Mac-Suibhne ,  Christian Sanchez-Costa

IPC: H04J14/04 ,  H04B10/077 ,  H04Q11/00

Abstract: A method of compensating for crosstalk in a mode division multiplexing passive optical network using a technique of transmitter-side crosstalk pre-compensation, performed at the Central Office, in which a downlink reference signal such as a training sequence or pilot signal is retrieved at the transmitter without being influenced by crosstalk effects on its uplink transmission. An uplink reference signal is transmitted in a quasi-single mode transmission along the optical fiber, and a plurality of optical signals input to transmission multiplexer are adapted based on the uplink reference signal to pre-compensate for crosstalk.

公开(公告)号：US20190028200A1

公开(公告)日：2019-01-24

申请号：US16140152

申请日：2018-09-24

Applicant: ASTON UNIVERSITY

Inventor： Filipe Ferreira ,  Naoise Mac-Suibhne ,  Andrew Ellis ,  Stylianos Sygletos ,  Mariia Sorokina ,  Christian Sanchez Costa

IPC: H04B10/2543 ,  H04B10/29 ,  H04B10/61 ,  H04J14/00 ,  H04B10/50

Abstract: A system for transmission of an optical signal, the system including an optical coupler for splitting said signal into a first copy and a second copy. The optical coupler has an input for receiving the optical signal, a first output for the first copy and a second output for the second copy. The system also includes a first optical guide connected to the first output, a second optical guide connected to the second output and a superposition module for coherently superimposing the first copy and the second copy of the signal.

公开(公告)号：US10659161B2

公开(公告)日：2020-05-19

申请号：US16140152

申请日：2018-09-24

Applicant: ASTON UNIVERSITY

Inventor： Filipe Ferreira ,  Naoise Mac-Suibhne ,  Andrew Ellis ,  Stylianos Sygletos ,  Mariia Sorokina ,  Christian Sanchez Costa

IPC: H04B10/2543 ,  H04B10/29 ,  H04B10/50 ,  H04B10/61 ,  H04J14/00

Abstract: A system for transmission of an optical signal, the system including an optical coupler for splitting said signal into a first copy and a second copy. The optical coupler has an input for receiving the optical signal, a first output for the first copy and a second output for the second copy. The system also includes a first optical guide connected to the first output, a second optical guide connected to the second output and a superposition module for coherently superimposing the first copy and the second copy of the signal.