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. 20, 2004
Filed:
Feb. 13, 2002
George G. King, Storrs, CT (US);
Peter K. Cheo, Waterford, CT (US);
PC Photonics Corporation, Waterford, CT (US);
Abstract
Efficient delivery of large amounts of pump laser power distributed along the cladding ( ) of a single core ( ) or multiple core ( ) laser fiber, without degrading the fiber integrity or compromising the fiber's waveguiding property, is accomplished by injecting the power into the cladding via delivery fibers ( ) permanently affixed to a peripheral wall ( ) at an angle that satisfies the condition for total internal reflection of the pump radiation so that it is confined within the inner cladding of the laser fiber. In one embodiment, the laser fiber ( ) is wrapped around a drum (53). Each delivery fiber has a numerical aperture (NA) less than half the NA of the laser fiber, and a core having a refractive index substantially the same as that of the inner cladding ( ) of the laser fiber.