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US 8,098,970 B2Granted
Composite waveguide
AssigneeThe Regents of the University of Michigan
InventorAlmantas Galvanauskas
Life of this patent
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Abstract
A composite waveguide includes a central core configured to transmit a plurality of modes and at least one side core helically wound about the central core and configured to be selectively coupled to at least a portion of the plurality of modes in the central core.
Claims13
A method of manufacturing a composite waveguide from an optical fiber preform, the method comprising:
- positioning a central core on a central rotation axis of the optical fiber preform;
- positioning at least one side-core adjacent the central core, wherein the side-core is positioned off-center from the central rotation axis and extends in the same direction as the central core;
- drawing the optical fiber preform into a composite waveguide;
- and
- concurrently rotating the optical fiber preform as it is drawn into the composite waveguide, whereby the side-core is helically wound and selectively coupled to the central core about the entire length of the central core such that an azimuth position of the helically wound side-core rotates along the axis of the central core.
2 more elements
Dependencies are inferred from the claim text.