Small diameter fiber optic cables having low-friction cable jackets and optical fibers with reduced cladding and coating diameters

A fiber optic cable, comprising:

• a cable jacket having an outer diametrical surface defined by a cable jacket outer diameter JOD and an inner diametrical surface defined by a cable jacket inner diameter JID;
• a plurality N of optical fibers, where N≥4, contained within the cable jacket and positioned a distance away from the cable jacket inner diameter,
• wherein each optical fiber comprises a core, the core having an outer radius r1;
• a cladding surrounding the core, the cladding having an outer radius r4, wherein r4 is less than 45 microns;
• a primary coating surrounding the cladding, the primary coating having an outer radius r5_and a thickness tP>10 microns, an in situ modulus EP, wherein EP is 0.35 MPa or less, and a spring constant χP<1.6 MPa, where χP=2EP r4/tP;
• and
• a secondary coating surrounding the primary coating, the secondary coating having an outer radius r6 and a thickness tS=r6−r5, and an in situ modulus of 1200 MPa or greater;
• wherein tS is greater than 10 microns, the outer radius r6 is about 90 microns or less, and the optical fiber has a mode field diameter 1MFD greater than about 8.2 microns at 1310 nm, a fiber cutoff wavelength of less than 1310 nm, and
• the optical fiber exhibits a bend loss when wrapped around a mandrel having a diameter of 10 mm, of less than 1.0 dB/turn at a wavelength of 1550 nm.