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:
May. 25, 2010
Filed:
Dec. 19, 2003
Benjamin Cuenot, Dijon, FR;
Esther Le Rouzic, Trebeurden, FR;
Nicolas Brochier, Ploumagoar, FR;
France Telecom SA, Paris, FR;
Abstract
An all-optical converter () for converting an intensity-modulated optical signal into an optical signal modulated to the DPSK format, includes a first input () for a first intensity-modulated optical signal (), a differential encoding module () adapted to perform a differential encoding between the first signal () and a second optical signal synchronous with the first signal (), a device adapted to modulate () the phase of an optical signal () according to the differential encoding performed by the differential encoding module (), and an output () of the device adapted to modulate () delivering an optical signal modulated to the DPSK format ().