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:
Oct. 25, 2005
Filed:
Feb. 06, 2002
Hong Po, Sherborn, MA (US);
Andrey A. Demidov, Duxbury, MA (US);
Hong Po, Sherborn, MA (US);
Andrey A. Demidov, Duxbury, MA (US);
OCG Technology Licensing, LLC, Columbia, MD (US);
Abstract
Fiber laser systems. One system comprises a pump energy source, a first fiber and a WDM for transferring pump energy from the first fiber to a second fiber that comprises a grating for reflecting energy at a predetermined wavelength. The first fiber is devoid of a grating substantially reflecting energy of the predetermined wavelength. In another embodiment, a system includes a pump energy source and a fiber comprising a loop-shaped portion, a first non loop-shaped portion comprising a grating for reflecting pump energy, and a second non loop-shaped portion comprising a grating for reflecting a Stoke shifted wavelength. In another embodiment, a system includes a pump energy source and a fiber comprising a first pair of gratings for reflecting energy at a first wavelength corresponding to a first order Stoke shift, a second pair of gratings for reflecting energy at a second wavelength corresponding to a Stoke shift order greater than one, and a third pair of gratings for reflecting energy having a Stoke shift order greater than that of the second wavelength. No grating of the third pair is located between gratings of the second pair.