Patent ID: 7153570

Claim:
An optical fiber cord which is a single core optical fiber cord having a structure in which an optical fiber core wire having a resin coating is provided at the center, a tensile-strength-fiber layer is provided around the outer periphery of the optical fiber core wire, and a coating layer is further provided around the outer periphery of the tensile-strength-fiber layer, wherein the coating layer is composed of a non-halogen fire-retardant resin, and wherein the coating layer is formed by a composition in which 18–60 parts by mass of ammonium polyphosphate is blended with 100 parts by mass of a resin component containing at least one selected from the group consisting of polyamide-series thermoplastic resins, polyamide elastomer-series thermoplastic resins and polyester elastomer-series thermoplastic resins, and wherein the bending modulus of the resin component of the coating layer is 500 to 1,300 MPa.