Multi-core optical fiber with reduced bubble formation
AssigneeAlcon Inc.
InventorsAlireza Mirsepassi, Dean Richardson
Life of this patent
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Abstract
The present disclosure relates to a MCF, including a plurality of cores, an outer cladding or tube, diffusion barriers, and claddings. The diffusion barriers and claddings are designed so that unwanted migration of dopants from the inner cladding to the outer cladding or tube is reduced, or that unwanted migration of dopants from the cores to the outer cladding or tube is reduced. The doping levels of the various components of the MCF can be controlled in order to reduce dopant migration. The reduction in dopant gradients reduces the migration of dopants and bubbles to the interfaces between the inner claddings, the outer cladding or tube, and the cores.
Claims19
A multi-core optical fiber (MCF), comprising:
- a plurality of cores comprising a first material;
- an outer cladding surrounding the cores, the outer cladding comprising the first material;
- a diffusion reduction feature, wherein the diffusion reduction feature reduces migration of a first dopant between the outer cladding and another element in the MCF;
- and
- a plurality of inner claddings surrounding the cores, the plurality of inner claddings including the first material and the first dopant.
A multi-core optical fiber (MCF), comprising:
- a rod comprising a first material;
- a rod inner cladding surrounding the rod, the rod inner cladding including the first material and a first dopant;
- a plurality of cores comprising the first material;
- a plurality of inner claddings surrounding the cores, the plurality of inner claddings comprising the first material and the first dopant, a first portion of each of the plurality of inner claddings interfacing with a portion of the rod inner cladding;
- and
- an outer tube comprising the first material and the first dopant, a second portion of each of the inner claddings interfacing with a portion of the outer tube.
A multi-core optical fiber (MCF), comprising:
- a rod comprising a first material;
- a plurality of cores comprising the first material and a first dopant;
- a plurality of diffusion barriers surrounding the cores, the diffusion barriers comprising the first material, a first portion of each of the diffusion barriers interfacing with a portion of the rod;
- and
- an outer tube comprising the first material, a second portion of each of the diffusion barriers interfacing with a portion of the outer tube.
Dependencies are inferred from the claim text.