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:
Dec. 09, 2014
Filed:
May. 11, 2010
Marco Presi, Pisa, IT;
Ernesto Ciaramella, Rome, IT;
Fabio Cavaliere, Vecchiano, IT;
Luca Banchi, Pisa, IT;
Marco Presi, Pisa, IT;
Ernesto Ciaramella, Rome, IT;
Fabio Cavaliere, Vecchiano, IT;
Luca Banchi, Pisa, IT;
Telefonaktiebolaget L M Ericsson (publ), Stockholm, SE;
Abstract
An optical network unit () comprising a reflective semi-conductor optical amplifier (R-SOA)and a driver. The R-SOA has a large optical confinement factor and is arranged to receive a portion of a downstream optical signal having a signal wavelength and a signal power. The driver is arranged to generate a drive signalto drive the R-SOA. The drive signal is arranged to cause the R-SOA to operate in saturation at the signal power. The drive signal is further arranged to cause the R-SOA to apply a return-to-zero line code to said portion of the downstream optical signal to form an upstream optical signal at the signal wavelength. The drive signal is further arranged to cause the R-SOA to apply a phase modulation to the upstream optical signal.