OPTICAL FIBER, OPTICAL FIBER RIBBON AND OPTICAL FIBER CABLE

摘要

According to the present invention, there is provided an optical fiber, an optical fiber ribbon and an optical fiber cable that reduce both the increase in transmission loss and the decrease in strength. According to an embodiment of the present invention, there is provided an optical fiber in which an outer circumferential surface of an optical fiber is coated with a primary coating layer. In the optical fiber, the primary coating layer includes a ultraviolet curable resin, and the ultraviolet curable resin contains 0.05 or more and 0.75 or less parts by weight of a reactive silane coupling agent and 0.05 or more and 0.75 or less parts by weight of an unreactive silane coupling agent.