Optical fiber cable jacket with low modulus of elasticity

An optical fiber cable comprising:

• at least one optical fiber;
• a polymeric jacket that surrounds the at least one optical fiber;
• wherein the polymeric jacket is formed at least in part from a polymer composition comprising:
• from 0% to 80% by weight of a polyolefin component;
• from 20% to 100% by weight of a thermoplastic elastomer component;
• wherein the polymer composition has an elastic modulus of at most 1500 MPa at −40° C. as measured using dynamic mechanical analysis according to ASTM D4065;
• wherein the polymer composition has a coefficient of thermal expansion as averaged over the temperature range of −40° C. to 25° C. of at least 120×10−6/K when measured according to ASTM E831;
• and
• wherein the polymer composition has a thermal contraction stress of at most 4.0 MPa at −40° C. as measured using dynamic mechanical analysis.

An optical fiber drop cable comprising:

• at least one optical fiber;
• a buffer tube disposed around the at least one optical fiber;
• a plurality of tensile yarns disposed around the buffer tube;
• a polymeric jacket disposed around the plurality of tensile yarns;
• wherein the polymeric jacket is formed at least in part from a polymer composition consisting essentially of:
• from 0% to 80% by weight of a polyolefin component;
• from 20% to 100% by weight of a thermoplastic elastomer component;
• and
• from 0% to 40% by weight of a filler component;
• wherein the polymer composition has an elastic modulus of 200 MPa to 1500 MPa at −40° C. as measured using dynamic mechanical analysis according to ASTM D4065;
• and
• wherein the polymer composition has a coefficient of thermal expansion as averaged over the temperature range of −40° C. to 25° C. of 120×10−6/K to 300×10−6/K when measured according to ASTM E831.