Patent ID: 11874494
Assignee: CORNING INCORPORATED
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. An optical fiber comprising:
a core region comprising silica glass doped with chlorine and/or an alkali metal; and
a cladding region surrounding the core region, the cladding region comprising an inner cladding directly adjacent to the core region, an outer cladding surrounding the inner cladding, and a trench region disposed between the inner cladding and the outer cladding in a radial direction, the trench region having a volume of about 30% Δ-micron2 or greater,
wherein the optical fiber has an effective area at 1550 nm of about 100 micron2 or less, and
wherein the optical fiber has a mode field diameter at 1550 nm of about 10 microns to about 10.5 microns, and
wherein the diameter of the cladding region is about 110 microns or less.