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. 16, 2013
Filed:
Aug. 24, 2009
Stefan Franz Grünsteidl, Munich, DE;
João M. Sousa, Sobrado, PT;
Martin O. Berendt, Arvore, PT;
Rosa M. Muñiz, Porto, PT;
Paulo T. Guerreiro, Senhora da Hora, PT;
Stefan Franz Grünsteidl, Munich, DE;
João M. Sousa, Sobrado, PT;
Martin O. Berendt, Arvore, PT;
Rosa M. Muñiz, Porto, PT;
Paulo T. Guerreiro, Senhora da Hora, PT;
Kongsberg Seatex AS, Trondheim, NO;
Abstract
Guided adiabatic bend transitions for multimode fibers are presented to preserve the power of guided light in the fundamental mode while guiding from one level of curvature to another for improved operation of mode filters and fiber amplifiers. A method is provided to find the guidance path. Implementations of these transducers include modal power back converters, and guidance paths into and out of higher order mode filtering devices which work on bending. A spiral structure is shown to incorporate adiabatic bends for a forward-pumped fiber amplifier.