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US 2006/0133753 A1Published application
Hole assisted fiber device and fiber preform
OwnerBrian Nelson, Thomas Lynch +3inventors
InventorsBrian Nelson, Thomas Lynch, Joseph Dyrda, James Onstott, Wayne Varner
Life of this patent
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Abstract
A hole-assisted fiber comprises a core region and a cladding region, where the cladding region includes multiple substantially elliptical holes spaced apart from each other to surround the core region. The holes are filled with one of a gas and a liquid to form a low refractive index portion of the cladding region.
Claims15
A hole-assisted fiber, comprising:
- a core region;
- and
- a cladding region, wherein the cladding region includes a plurality of non-circular holes, the plurality being four or more, symmetrically disposed about the core region and each spaced apart from each other in a first ring surrounding the core region, wherein the holes are filled with one of a gas and a liquid, and wherein a size of each of the non-circular holes is sufficient to provide the fiber with a bend loss of less than 1 dB per turn about a 10 mm diameter mandrel at 1550 nm.
13-18. (canceled)
A hole-assisted fiber, comprising:
- a core region;
- and
- a cladding region, wherein the cladding region includes a single ring of four or more substantially elliptical holes symmetrically disposed about the core region, wherein the holes are filled with one of a gas and a liquid.
Dependencies are inferred from the claim text.