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US 8,787,716 B2Granted
Fibre coupler
AssigneesTrumpf Laser GmbH, JENOPTIK Laser GmbH
InventorsMalte Kumkar, Marcin Michal Kozak, Clemens Hoenninger, Andreas Liem, Thomas Gabler, Inka Manek-Hoenninger
Life of this patent
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Abstract
A fiber coupler with an inner tube, an inner fiber arranged within the inner tube and several outer fibers arranged around the inner fiber, is disclosed, wherein said fiber coupler tapers in the longitudinal direction of the inner fiber from a main section to a terminal section and the inner cross section on the inner tube corresponds to the diameter of the inner fiber along the tapering section of the fiber coupler.
Claims22
A fiber coupler, comprising:
- an inner tube;
- an inner fiber disposed in the inner tube;
- multiple outer fibers disposed around the inner fiber, and
- a main section;
- a terminal section;
- and
- a tapering section defined between the main section and the terminal section,
- wherein the fiber coupler tapers in the longitudinal direction of the inner fiber along the tapering section and the internal cross-section of the inner tube along the tapering section corresponds to the cross-section of the inner fiber,
- wherein the outer fibers are in optical contact with the inner fiber via the inner tube along the entire tapering section.
6 more elements
A method for producing a fiber coupler, comprising:
- creating a blank, comprising providing multiple outer fibers and an inner tube defining an internal cross-section, the multiple outer fibers are situated around the inner tube, a portion of the blank being tapered along a longitudinal direction of the inner tube to define a tapered section having a longitudinal length, the tapered section connecting a main section of the blank to a terminal section of the blank, and forming the tapered section;
- inserting an inner fiber into the inner tube, wherein after the tapering step, an internal cross-section of the inner tube along the tapered section corresponds to the cross-section of the inserted inner fiber;
- and
- collapsing the inner tube on the inner fiber along the entire longitudinal length of the tapered section.
1 more element
Dependencies are inferred from the claim text.