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:
Apr. 28, 2015
Filed:
May. 24, 2011
Mehdi Alouini, Liffre, FR;
Goulc'hen Loas, Saint Aubin D'aubigne, FR;
François Bondu, Servon sur Vilaine, FR;
Marc Vallet, Thorigne Fouillard, FR;
Marc-olivier Brunel, Rennes, FR;
Marco Romanelli, Rennes, FR;
Mehdi Alouini, Liffre, FR;
Goulc'hen Loas, Saint Aubin D'aubigne, FR;
François Bondu, Servon sur Vilaine, FR;
Marc Vallet, Thorigne Fouillard, FR;
Marc-Olivier Brunel, Rennes, FR;
Marco Romanelli, Rennes, FR;
Universite de Rennes 1, Rennes, FR;
Centre National de la Recherche Scientifique, Paris, FR;
Abstract
The invention concerns an oscillator generating a wave composed of a frequency of on the order of terahertz from a beat of two optical waves generated by a dual-frequency optical source. The oscillator includes a modulator the transfer function of which is non-linear for generating harmonics with a frequency of less than one terahertz for each of the optical waves generated by the dual-frequency optical source, an optical detector able to detect at least one harmonic for each of the optical waves generated by the dual-frequency optical source and transforming the harmonics detected into an electrical signal, a phase comparator for comparing the electrical signal with a reference electrical signal, and a module for controlling at least one element of the dual-frequency optical source with a signal obtained from the signal resulting from the comparison.