Method of laser modification of an otpical fibre
AssigneeOxford University Innovation Limited
InventorsJulian FELLS, Martin BOOTH, Patrick SALTER
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Abstract
Method of laser modifying an optical fibre to form a modified region at a target location within the fibre, comprising positioning at least a portion of an optical fibre in a laser system for modification by a laser, applying a correction to an active optical element of the laser system to modify wavefront properties of the laser to counteract an effect of aberration on laser focus, and laser modifying the optical fibre at the target location using the laser with the corrected wavefront properties to produce the modified region.
Claims21
1-37. (canceled)
A single-mode sapphire optical fibre.
The single-mode sapphire optical fibre as claimed in claimed 38, consisting of single mode optical core surrounded by homogeneous sapphire fibre.
The single-mode sapphire optical fibre as claimed in claimed 38, wherein only a single mode can propagate along the fibre length.
The sapphire optical fibre comprising a laser-written waveguide.
The sapphire optical fibre configured by laser-modification to increases losses for predetermined propagation modes therein.
Dependencies are inferred from the claim text.