Reducing light-induced loss in optical fibre
AssigneeNkt Photonics A/S
InventorsJens Lyngsø, Cameron Smith, Anders Harpøth, Christian Jakobsen, Thomas Tanggard Alkeskjold, Irnis Kubat
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Abstract
A supercontinuum source including a pump source and a supercontinuum generator configured for receiving electromagnetic radiation derived from the pump source and for generating supercontinuum radiation, the supercontinuum generator including a nonlinear microstructured optical fibre having a core region comprising silica. The core region includes a dopant selected to reduce light-induced non-bridging oxygen hole centre loss in the nonlinear microstructured optical fibre.
Claims28
A supercontinuum source, comprising:
- a pump source;
- and
- a supercontinuum generator configured for receiving electromagnetic radiation derived from the pump source and for generating supercontinuum radiation, the supercontinuum generator comprising a passive silica-based nonlinear microstructured optical fiber having a core region and a cladding region including longitudinally extending air-holes disposed about the cladding region,
- wherein the core region has a core diameter of less than 5 μm,
- wherein at least a part of the core region of the microstructured optical fiber is doped with a dopant that reduces light-induced non-bridging oxygen hole centre loss in the microstructured optical fiber, where the dopant is provided in a doped region of the core region, and the number of dopant atoms in the doped region is greater than 0.05% of the number of silicon atoms in the doped region, and
- wherein the core region of the microstructured optical fiber further comprises hydrogen and/or deuterium.
A passive nonlinear microstructured optical fiber having a core region and a cladding region including longitudinally extending air-holes disposed about the cladding region,
- wherein the core region has a core diameter of less than 5 μm,
- wherein the microstructured optical fiber is silica-based and at least a part of the core region of the microstructured optical fiber is doped with a dopant that reduces light-induced non-bridging oxygen hole centre loss in the microstructured optical fiber, where the dopant is provided in a doped region of the core region, and the number of dopant atoms in the doped region is greater than 0.1% of the number of silicon atoms in the doped region, and
- where the core region of the microstructured optical fiber further comprises hydrogen and/or deuterium.
Dependencies are inferred from the claim text.