Optical fiber
AssigneeSumitomo Electric Industries, Ltd.
InventorsToshiki TARU, Takuji NAGASHIMA, Kazuya KUWAHARA
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Abstract
An easily manufacturable optical fiber that has desired properties includes a core region made of a glass, a cladding region made of a glass surrounding the core region and having a first viscosity at a drawing temperature, and a jacket region made of a glass surrounding the cladding region and having a second viscosity that is lower than the first viscosity at the drawing temperature. A plurality of holes that are surrounded by the glass of the cladding region and the glass of the jacket region are circumferentially arranged in a cross section that is perpendicular to a fiber axis and extend along the fiber axis, and 50% or more of the glass surrounding each of the plurality of holes is the glass of the cladding region.
Claims2
An optical fiber comprising:
- a core region made of a glass;
- a cladding region made of a glass that surrounds the core region and having a first viscosity at a drawing temperature;
- and
- a jacket region made of a glass that surrounds the cladding region and having a second viscosity that is lower than the first viscosity at the drawing temperature,
- wherein a plurality of holes surrounded by the glass of the cladding region and the glass of the jacket region are circumferentially arranged in a cross section that is perpendicular to a fiber axis and extend along the fiber axis, and
- wherein 50% or more of the glass surrounding each of the plurality of holes is the glass of the cladding region.
Dependencies are inferred from the claim text.