Provided are an optical fiber ribbon and an optical fiber cable which prevent cracks of a connection and detachment of the connection from a colored optical fiber core when the optical fiber cable is subjected to repetitive ironing and which does not impair characteristics of the cable at the time of high-density cabling.
In the present invention, an optical fiber ribbon 2 is intermittently connected in a length direction by an intermittent connection 3 which includes a polyol having a weight-average molecular weight of 3000 to 4000 in a specific amount relative to the entire intermittent connection 3 and which has Young's modulus at 23°C within a specific range. Therefore, when collectively unitizing optical fiber ribbons 2 to form an optical fiber cable, the present invention provides an optical fiber ribbon 2 which maintains advantages of the optical fiber ribbon 2 and which prevents cracks of the intermittent connection 3 and detachment of the intermittent connection 3 from a colored optical fiber core 1 when the cable is subjected to repetitive ironing. The present invention also provides an optical fiber cable provided with the optical fiber ribbon 2.