Single-mode optical fiber with low cutoff wavelength and low bending loss

Abstract

Outer radius r1 of about 4.0 microns to about 4.6 microns and about 4.5% Δ microns 2 ~approximately 5.5%Δmicrons 2 and a core volume of about -50% Δ microns. The optical fiber further includes an index-depressed cladding region and an outer cladding region. 2 ~ Approximately -20%Δ microns 2 and an index-depressed cladding region having a trench volume of about 8.8 microns to about 9.4 microns. The optical fiber has a mode field diameter at 1310 nm of about 8.8 microns to about 9.4 microns, a 2 meter cable cutoff of about 1120 nm to about 1260 nm, a bend loss at 1310 nm of less than 1.0 dB / turn as determined by mandrel wrap testing using a 15 mm diameter mandrel, and a zero dispersion wavelength of 1300 nm to 1324 nm.

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