Optical fiber exhibiting high lp11 attenuation but low lp01 attenuation when looped

An optical fiber comprising:

• a first outer cladding region comprising a no-slope portion where the first outer cladding has a refractive index that is substantially constant as a function of a radius from an axis of the optical fiber, wherein the no-slope portion establishes a 0% baseline (Δ0) for relative refractive indices;
• a core region surrounded by the first outer cladding region, the core region comprising (i) an outer radius (r1) within a range of from 4.0 μm to 6.5 μm from the axis of the optical fiber and (ii) a maximum relative refractive index (Δ1max) within a range of from 0.3% to 0.6%, the core region exhibiting an α value that is greater than or equal to 5;
• and
• a depressed index cladding region surrounding the core region and surrounded by the first outer cladding region, the depressed index cladding region comprising (i) an outer radius (r3) from the axis of the optical fiber within a range of from 14 μm to 28 μm, (ii) a relative refractive index (Δ3) within a range of from −0.45% to −0.30%, and (iii) a trench volume (VT) that is within a range of from 65%-μm2 to 140%-μm2;
• wherein, the optical fiber exhibits a LP01 bending loss for electromagnetic radiation having a wavelength within a range of from 1260 nm to 1360 nm, (i) when bent 1 turn around a 3 mm diameter mandrel, that is within a range of from 0.005 dB to 0.35 dB and, (ii) when bent 1 turn around a 5 mm diameter mandrel, that is within a range of from 0.000010 dB to 0.0050 dB,
• wherein, the optical fiber exhibits a LP11 bending loss for electromagnetic radiation having a wavelength within a range of from 1260 nm to 1360 nm, (i) when bent 1 turn around a 3 mm diameter mandrel, that is within a range of from 2.00 dB to 17.0 dB and, (ii) when bent 1 turn around a 5 mm diameter mandrel, that is within a range of from 0.010 dB to 1.00 dB,
• wherein, the optical fiber exhibits a LP01 bending loss for electromagnetic radiation having a wavelength within a range of from 1530 nm to 1565 nm, (i) when bent 1 turn around a 3 mm diameter mandrel, that is within a range of from 0.010 dB to 2.50 dB, and (ii) when bent 1 turn around a 5 mm diameter mandrel, that is within a range of from 0.005 dB to 0.05 dB, and
• wherein, the optical fiber exhibits a LP11 bending loss for electromagnetic radiation having a wavelength within a range of from 1530 nm to 1565 nm, (i) when bent 1 turn around a 3 mm diameter mandrel that is within a range of from 10.00 dB to 35.00 dB, and (ii) when bent 1 turn around a 5 mm diameter mandrel, that is within a range of from 1.00 dB to 6.00 dB.