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:
Aug. 25, 2026
Filed:
Apr. 22, 2021
Fundació Institut DE Ciències Fotòniques, Castelldefels, ES;
Institució Catalana DE Recerca I Estudis Avançats, Barcelona, ES;
Saeed Ghasemi, Castelldefels, ES;
Sebastián Etcheverry, Castelldefels, ES;
Valerio Pruneri, Castelldefels, ES;
FUNDACIÓ INSTITUT DE CIÈNCIES FOTÒNIQUES, Barcelona, ES;
INSTITUCIÓ CATALANA DE RECERCA I ESTUDIS AVANÇATS, Barcelona, ES;
Abstract
The present invention relates to a method and a device for feed-forward carrier recovery in coherent optical communication. The present invention discloses the method and the device to receive an optical signal from a light source, wherein the optical signal comprises at least one pilot pulse and at least one signal pulse including information. Quadrature values of a plurality of samples of the at least one pilot pulse are determined using a local oscillator signal of a local oscillator source. A phase difference between the received optical signal of the light source and the local oscillator signal of the local oscillator source is determined using the quadrature values of the plurality of samples and the carrier information of the at least one signal pulse is recovered based on the determined phase difference.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile