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:
Feb. 28, 2017
Filed:
Mar. 06, 2014
Cisco Technology, Inc., San Jose, CA (US);
Chris Fludger, Nuremberg, DE;
Theodor Kupfer, Feucht, DE;
Fabrizio Forghieri, Monza, IT;
Pierluigi Poggiolini, Turin, IT;
Gabriella Bosco, Bollengo, IT;
Andrea Carena, Carmagnola, IT;
Vittorio Curri, Nomaglio, IT;
Cisco Technology, Inc., San Jose, CA (US);
Abstract
A method for transmitting a coherent optical data signal includes receiving a data signal from an interface, and encoding the data signal with a forward error correcting (FEC) encoder according to a mix of modulation formats. The FEC encoder generates an FEC encoded signal which is used to generate modulation symbols according to the modulation formats. The FEC encoded signal of modulation symbols is spectrally shaped to generate a shaped signal, and pre-distorted before transmission. The shaped signal is pre-distorted by adding a predetermined amount of chromatic dispersion to generate a smoothed signal, and the smoothed signal is transmitted according to the modulation formats.