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AssigneeHeraeus Quarzglas GmbH & Co. KG
InventorsKay SCHUSTER, Michael LORENZ, Manuel ROSENBERGER, Michael HÜNERMANN, Tobias TIESS, Thomas KAYSER, Martin BÖTTCHER
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Methods for producing a multicore fiber comprise a method step in which a component group is reshaped to form the multicore fiber or a pre-form for the multicore fiber, which comprises a hollow cylinder comprising a central bore and a hollow cylinder longitudinal axis, which hollow cylinder comprises a cladding glass region made of cladding glass and a plurality of core glass regions occupied by a core glass, wherein at least part of the central bore is occupied by a glass filling material. In order to provide a method for producing multicore fibers without central signal core, in which the risk of rejects during the completion of the hollow glass cladding cylinder is reduced, a marker element made of marker glass adjacent to the glass filling material is used, which extends along the longitudinal axis of the central bore.
A method for producing a multicore fiber, comprising a method step in which a component group is reshaped to form the multicore fiber or a pre-form for the multicore fiber, which comprises a hollow cylinder comprising a central bore and a hollow cylinder longitudinal axis, which hollow cylinder comprises a cladding glass region made of cladding glass and a plurality of core glass regions provided with a core glass, wherein at least a part of the central bore is occupied by a glass filling rod comprising a filling rod longitudinal axis and a filling rod outer cladding surface, wherein a recess extending in the direction of the filling rod longitudinal axis is produced in or on the filling rod, into which recess a marker element made of marker glass is inserted or which forms the marker element.
A semi-finished product for producing a multicore fiber, comprising a hollow cylinder comprising a central bore, which hollow cylinder comprises a cladding glass region made of cladding glass and a hollow cylinder longitudinal axis, and a plurality of core glass regions provided with a core glass within the cladding glass region, wherein at least a part of the central bore is occupied by a glass filling rod, which comprises a filling rod longitudinal axis and a filling rod outer cladding surface, wherein the filling rod comprises a recess which extends in the direction of the filling rod longitudinal axis and into which a marker element made of marker glass is inserted, or which forms the marker element, which extends along the central bore longitudinal axis and the filling rod longitudinal axis.
Dependencies are inferred from the claim text.