Single mode optical fiber suitable for ribbon applications

An optical fiber (100) comprising:

• a core region (102), wherein the core region (102) has a radius R1, wherein the core region (102) is defined along a central longitudinal axis (110) of the optical fiber (100);
• and
• a cladding region (104) having a radius R3, wherein the cladding region (104) is defined along the central longitudinal axis (110) of the optical fiber (100), wherein the cladding region (104) comprising an inner clad region (106) defined by an inner clad refractive index profile, wherein inner clad refractive index profile is an alpha profile, wherein the inner clad region (106) is a trench region defined by one or more of trench delta in a range of −0.05 to −0.2, wherein the trench region defined by a trench radius R2 between 14 microns to 16.5 microns and trench alpha between 6 and 9;
• wherein the optical fiber (100) has a Mode Field Diameter in a range of 8.5+/−0.3 microns at a wavelength of 1310 nanometers, a micro-bending loss of less than equal to 0.5 dB/Km at a wavelength of 1550 nanometers and a macro-bending loss of less than 1 dB/turn at a wavelength 1550 nanometers and a bend diameter of 15 millimeters.