Optical fiber coatings

A rollable-ribbon (RR) fiber-optic cable, comprising:

• optical fibers arranged in a predetermined array, each optical fiber comprising:
• a core;
• a cladding disposed about the core;
• and
• a primary coating disposed about the cladding during an optical fiber draw process, the primary coating being disposed at a draw speed of at least thirty meters-per-second (30 m/s), the primary coating being ultraviolet light (UV) cured to a primary-coating in situ modulus (P-ISM) value of less than 0.45 megapascals (MPa), the primary coating further being cured during the draw process to at least eighty-five percent (85%) of a fully cured P-ISM value, the primary coating being cured at a temperature that is greater than one hundred degrees Celsius (100° C.), the primary coating comprising a UV-curable acrylate-based composition, the UV-curable acrylate-based composition comprising between approximately 0.001 weight percent (˜0.001 wt %) to approximately five (˜5) wt % of a mercapto-containing compound, the primary coating comprising a primary photoinitiator prior to curing that absorbs light in a primary wavelength range (λ1) that is between approximately 365 nanometers (nm) and approximately 405 nm (˜365 nm<λ1<˜405 nm);
• a secondary coating disposed about the primary coating, the secondary coating comprising a secondary photoinitiator prior to curing that absorbs light in a secondary wavelength range (λ2) that is between approximately 300 nm and approximately 360 nanometers (˜300 nm<λ2<˜360 nm);
• and
• UV-curable adhesive disposed at predetermined locations in the array, the UV-curable adhesive flexibly adhering together adjacent optical fibers at the predetermined locations.