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:
Jul. 14, 2015
Filed:
Oct. 29, 2012
Ofs Fitel, Llc, Norcross, GA (US);
Paul S Westbrook, Bridgewater, NJ (US);
Kazi S Abedin, Basking Ridge, NJ (US);
OFS FITEL, LLC, Norcross, GA (US);
Abstract
A Brillouin fiber laser uses a distributed feedback (DFB) fiber Bragg grating with a discrete π-phase shift, which is offset from the physical center of the grating as a resonator. Lasing is achieved by using the SBS gain in the DFB from narrow-linewidth laser pump radiation with an optical frequency that is higher than the central pass band of the grating by an amount nominally equal to the Stokes's frequency shift, ν. The lasing occurs at a wavelength that corresponds to the first Stokes wave. The Brillouin DFB fiber laser has a low threshold, does not require any fiber optic couplers, does not require rare-earth doping, enables connection of many DFB lasers in series, pumping using a multi-wavelength or wavelength tunable laser sources, and the laser output can be delivered along the direction of the pump propagation or in the reverse direction.