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:
Feb. 11, 2003
Filed:
Feb. 14, 2000
Hervé Lefevre, Paris, FR;
Photonetics, Marly le Roi, FR;
Abstract
A wavelength tuneable laser source with an external cavity and utilizing an interferometer having a reciprocal output and a non-reciprocal output. The laser source includes an amplifier medium, a cavity comprising two reflectors and a source beam extraction system, a diffraction grating located in the cavity. At least one of the two reflectors are rotatable so as to tune a wavelength. The source beam extraction mechanism includes a beam splitter for splitting an input beam into first and second secondary beams. The first and second secondary beams are parallel to one another. The source beam extraction mechanism also includes a retro-reflecting mechanism for redirecting the first and second secondary beams toward the beam splitter. A non-reciprocal output beam is obtained from a reciprocal source beam using the interferometer.