A densely packed, low bend loss optical fiber cable comprising: an outer cable jacket; a plurality of buffer tubes surrounded by the cable jacket, each buffer tube includes an inner surface defining a channel having a diameter, D1, and an outer surface facing an inner surface of the cable jacket; and a plural number, N, of optical fibers, located within the channel of each buffer tube and surrounded by the inner surface of the buffer tube, wherein each optical fiber has an outer diameter, D2; wherein the N optical fibers are densely packed within each buffer tube such that a diameter ratio parameter, Ω, is defined as the ratio D1/D2, and is 2.25+0.143 ≤ Ω ≤ 1.14+0.313; wherein each of the plural number of optical fibers comprise: a mode field diameter of larger than 9 microns at 1310 nm; a cable cutoff of less than 1260 nm; a macrobend loss of less than 0.5 dB/turn at 1550 nm for a mandrel diameter of 15 mm; wherein the N optical fibers are arranged into an outer group and an inner group within each buffer tube, wherein the outer group comprises a plurality of optical fibers and the inner group comprises at least two optical fibers, wherein the optical fibers of the outer group and of the inner group are packed within the buffer tube such that a maximum gap length measured between any pair of adjacent optical fibers of the outer group is less than D2 such that the at least two optical fibers of the inner group are blocked from moving from the inner group to the outer group within the buffer tube; characterized in that each buffer tube is formed from a relatively rigid polymer material having a modulus of elasticity at 25 °C between 0.8 GPa and 3 GPa. an outer cable jacket; a plurality of buffer tubes surrounded by the cable jacket, each buffer tube includes an inner surface defining a channel having a diameter, D1, and an outer surface facing an inner surface of the cable jacket; and a plural number, N, of optical fibers, located within the channel of each buffer tube and surrounded by the inner surface of the buffer tube, wherein each optical fiber has an outer diameter, D2; wherein the N optical fibers are densely packed within each buffer tube such that a diameter ratio parameter, Ω, is defined as the ratio D1/D2, and is 2.25+0.143 ≤ Ω ≤ 1.14+0.313; wherein each of the plural number of optical fibers comprise: a mode field diameter of larger than 9 microns at 1310 nm; a cable cutoff of less than 1260 nm; a macrobend loss of less than 0.5 dB/turn at 1550 nm for a mandrel diameter of 15 mm; wherein the N optical fibers are arranged into an outer group and an inner group within each buffer tube, wherein the outer group comprises a plurality of optical fibers and the inner group comprises at least two optical fibers, wherein the optical fibers of the outer group and of the inner group are packed within the buffer tube such that a maximum gap length measured between any pair of adjacent optical fibers of the outer group is less than D2 such that the at least two optical fibers of the inner group are blocked from moving from the inner group to the outer group within the buffer tube; characterized in that each buffer tube is formed from a relatively rigid polymer material having a modulus of elasticity at 25 °C between 0.8 GPa and 3 GPa. a mode field diameter of larger than 9 microns at 1310 nm; a cable cutoff of less than 1260 nm; a macrobend loss of less than 0.5 dB/turn at 1550 nm for a mandrel diameter of 15 mm; wherein the N optical fibers are arranged into an outer group and an inner group within each buffer tube, wherein the outer group comprises a plurality of optical fibers and the inner group comprises at least two optical fibers, wherein the optical fibers of the outer group and of the inner group are packed within the buffer tube such that a maximum gap length measured between any pair of adjacent optical fibers of the outer group is less than D2 such that the at least two optical fibers of the inner group are blocked from moving from the inner group to the outer group within the buffer tube; characterized in that each buffer tube is formed from a relatively rigid polymer material having a modulus of elasticity at 25 °C between 0.8 GPa and 3 GPa.