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:
Jan. 08, 2013
Filed:
May. 11, 2010
David J. Digiovanni, Mountain Lakes, NJ (US);
Clifford E. Headley, Flemington, NJ (US);
Jeffrey W. Nicholson, Warren, NJ (US);
Man F. Yan, Berkeley Heights, NJ (US);
David J. DiGiovanni, Mountain Lakes, NJ (US);
Clifford E. Headley, Flemington, NJ (US);
Jeffrey W. Nicholson, Warren, NJ (US);
Man F. Yan, Berkeley Heights, NJ (US);
OFS Fitel, LLC, Norcross, GA (US);
Abstract
A light generation and amplification system includes a length of laser-active filter fiber having a refractive index profile that suppresses unwanted Stokes orders at wavelengths longer than a target wavelength and that has normal dispersion over its operating wavelength. A nested series of reflectors is provided at the fiber's input and output ends, and are configured to provide a nested series of Raman cavities, separated in wavelength by approximately the respective Stokes shifts. The first cavity in the series is a combined cavity that provides laser oscillation due to a combination of ionic gain and feedback at a selected first wavelength and that provides Raman gain to light at the first Stokes shift of the first wavelength when light at the first wavelength has an energy exceeding a Raman scattering threshold. The Raman cavities provide a stepwise transition between the first wavelength and the target wavelength.