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:
Jan. 07, 2025
Filed:
Mar. 31, 2022
Applicant:
Nokia Solutions and Networks Oy, Espoo, FI;
Inventors:
Patrick Iannone, Aberdeen, NJ (US);
Roland Ryf, Aberdeen, NJ (US);
Rene-Jean Essiambre, Red Bank, NJ (US);
Assignee:
Nokia Solutions and Networks Oy, Espoo, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 10/548 (2013.01);
U.S. Cl.
CPC ...
H04B 10/548 (2013.01);
Abstract
An apparatus includes an optical PSK transmitter configured to output carrier-suppressed optical signal phase-modulated according to a M-PSK constellation without substantial amplitude modulation. The apparatus includes an optical phase modulator, a driver configured to drive the modulator with a PAM-N electrical signal, N>M, and a signal encoder configured to map an input bit stream to the PAM-N electrical signal.